Search SciRate

118 results for au:Ivanov_A in:hep-ph

Show all abstracts

Multiplicities of positive and negative pions, kaons and unidentified hadrons from deep-inelastic scattering of muons off a liquid hydrogen target
G. D. Alexeev, M. G. Alexeev, C. Alice, A. Amoroso, V. Andrieux, V. Anosov, K. Augsten, W. Augustyniak, C. D. R. Azevedo, B. Badelek, J. Barth, R. Beck, J. Beckers, Y. Bedfer, J. Bernhard, M. Bodlak, F. Bradamante, A. Bressan, W.-C. Chang, C. Chatterjee, et al (150)
Oct 17 2024 hep-ex hep-ph arXiv:2410.12005v1

@misc{2410.12005, author = {G.~D.~Alexeev and M.~G.~Alexeev and C.~Alice and A.~Amoroso and V.~Andrieux and V.~Anosov and K.~Augsten and W.~Augustyniak and C.~D.~R.~Azevedo and B.~Badelek and J.~Barth and R.~Beck and J.~Beckers and Y.~Bedfer and J.~Bernhard and M.~Bodlak and F.~Bradamante and A.~Bressan and W.-C.~Chang and C.~Chatterjee and M.~Chiosso and S.-U.~Chung and A.~Cicuttin and P.~M.~M.~Correia and M.~L.~Crespo and D.~D'Ago and S.~Dalla Torre and S.~S.~Dasgupta and S.~Dasgupta and F.~Delcarro and I.~Denisenko and O.~Yu.~Denisov and S.~V.~Donskov and N.~Doshita and Ch.~Dreisbach and W.~Dünnweber and R.~R.~Dusaev and D.~Ecker and D.~Eremeev and P.~Faccioli and M.~Faessler and M.~Finger and M.~Finger jr.~and H.~Fischer and K.~J.~Flöthner and W.~Florian and J.~M.~Friedrich and V.~Frolov and L.G.~Garcia Ordòñez and O.~P.~Gavrichtchouk and S.~Gerassimov and J.~Giarra and D.~Giordano and A.~Grasso and A.~Gridin and M.~Grosse Perdekamp and B.~Grube and M.~Grüner and A.~Guskov and P.~Haas and D.~von Harrach and M.~Hoffmann and N.~d'Hose and C.-Y.~Hsieh and S.~Ishimoto and A.~Ivanov and T.~Iwata and V.~Jary and R.~Joosten and E.~Kabuß and F.~Kaspar and A.~Kerbizi and B.~Ketzer and A.~Khatun and G.~V.~Khaustov and F.~Klein and J.~H.~Koivuniemi and V.~N.~Kolosov and K.~Kondo Horikawa and I.~Konorov and A.~Yu.~Korzenev and A.~M.~Kotzinian and O.~M.~Kouznetsov and A.~Koval and Z.~Kral and F.~Kunne and K.~Kurek and R.~P.~Kurjata and K.~Lavickova and S.~Levorato and Y.-S.~Lian and J.~Lichtenstadt and P.-J.~Lin and R.~Longo and V.~E.~Lyubovitskij and A.~Maggiora and N.~Makke and G.~K.~Mallot and A.~Maltsev and A.~Martin and J.~Marzec and J.~Matoušek and T.~Matsuda and C.~Menezes Pires and F.~Metzger and W.~Meyer and Yu.~V.~Mikhailov and M.~Mikhasenko and E.~Mitrofanov and D.~Miura and Y.~Miyachi and R.~Molina and A.~Moretti and A.~Nagaytsev and D.~Neyret and M.~Niemiec and J.~Nový and W.-D.~Nowak and G.~Nukazuka and A.~G.~Olshevsky and M.~Ostrick and D.~Panzieri and B.~Parsamyan and S.~Paul and H.~Pekeler and J.-C.~Peng and M.~Pešek and D.~V.~Peshekhonov and M.~Pešková and S.~Platchkov and J.~Pochodzalla and V.~A.~Polyakov and C.~Quintans and G.~Reicherz and C.~Riedl and D.~I.~Ryabchikov and A.~Rychter and A.~Rymbekova and V.~D.~Samoylenko and A.~Sandacz and S.~Sarkar and I.~A.~Savin and G.~Sbrizzai and H.~Schmieden and A.~Selyunin and L.~Sinha and D.~Spülbeck and A.~Srnka and M.~Stolarski and M.~Sulc and H.~Suzuki and S.~Tessaro and F.~Tessarotto and A.~Thiel and F.~Tosello and A.~Townsend and T.~Triloki and V.~Tskhay and B.~Valinoti and B.~M.~Veit and J.F.C.A.~Veloso and A.~Vijayakumar and M.~Virius and M.~Wagner and S.~Wallner and K.~Zaremba and M.~Zavertyaev and M.~Zemko and E.~Zemlyanichkina and M.~Ziembicki}, title = {{M}ultiplicities of positive and negative pions, kaons and unidentified hadrons from deep-inelastic scattering of muons off a liquid hydrogen target}, year = {2024}, eprint = {2410.12005}, note = {arXiv:2410.12005v1} }
PDF
The multiplicities of positive and negative pions, kaons and unidentified hadrons produced in deep-inelastic scattering are measured in bins of the Bjorken scaling variable $x$, the relative virtual-photon energy $y$ and the fraction of the virtual-photon energy transferred to the final-state hadron $z$. Data were obtained by the COMPASS Collaboration using a 160 GeV muon beam of both electric charges and a liquid hydrogen target. These measurements cover the kinematic domain with photon virtuality $Q^2 > 1$ (GeV/$c)^2$, $0.004 < x < 0.4$, $0.1 < y < 0.7$ and $0.2 < z < 0.85$, in accordance with the kinematic domain used in earlier published COMPASS multiplicity measurements with an isoscalar target. The calculation of radiative corrections was improved by using the Monte Carlo generator DJANGOH, which results in up to 12\% larger corrections in the low-$x$ region.
First search for dark photon dark matter with a MADMAX prototype
J. Egge, D. Leppla-Weber, S. Knirck, B. Ary dos Santos Garcia, D. Bergermann, A. Caldwell, V. Dabhi, C. Diaconu, J. Diehl, G. Dvali, M. Ekmedžić, F. Gallo, E. Garutti, S. Heyminck, F. Hubaut, A. Ivanov, J. Jochum, P. Karst, M. Kramer, D. Kreikemeyer-Lorenzo, et al (26)
Aug 06 2024 hep-ex astro-ph.IM hep-ph physics.ins-det arXiv:2408.02368v1

@misc{2408.02368, author = {J.~Egge and D.~Leppla-Weber and S.~Knirck and B.~Ary dos Santos Garcia and D.~Bergermann and A.~Caldwell and V.~Dabhi and C.~Diaconu and J.~Diehl and G.~Dvali and M.~Ekmedžić and F.~Gallo and E.~Garutti and S.~Heyminck and F.~Hubaut and A.~Ivanov and J.~Jochum and P.~Karst and M.~Kramer and D.~Kreikemeyer-Lorenzo and C.~Krieger and C.~Lee and A.~Lindner and J.~P.~A.~Maldonado and B.~Majorovits and S.~Martens and A.~Martini and A.~Miyazaki and E.~Öz and P.~Pralavorio and G.~Raffelt and A.~Ringwald and J.~Redondo and S.~Roset and N.~Salama and J.~Schaffran and A.~Schmidt and F.~Steffen and C.~Strandhagen and I.~Usherov and H.~Wang and G.~Wieching and G.~Cancelo and M.~Di Federico and G.~Hoshino and L.~Stefanazzi}, title = {{F}irst search for dark photon dark matter with a {MADMAX} prototype}, year = {2024}, eprint = {2408.02368}, note = {arXiv:2408.02368v1} }
PDF
We report the first result from a dark photon dark matter search in the mass range from ${78.62}$ to $83.95~\mathrm{\mu eV}/c^2$ with a dielectric haloscope prototype for MADMAX (Magnetized Disc and Mirror Axion eXperiment). Putative dark photons would convert to observable photons within a stack consisting of three sapphire disks and a mirror. The emitted power of this system is received by an antenna and successively digitized using a low-noise receiver. No dark photon signal has been observed. Assuming unpolarized dark photon dark matter with a local density of $\rho_{\chi}=0.3~\mathrm{GeV/cm^3}$ we exclude a dark photon to photon mixing parameter $\chi > 3.0 \times 10^{-12}$ over the full mass range and $\chi > 1.2 \times 10^{-13}$ at a mass of $80.57~\mathrm{\mu eV}/c^2$ with a 95\% confidence level. This is the first physics result from a MADMAX prototype and exceeds previous constraints on $\chi$ in this mass range by up to almost three orders of magnitude.
High-statistics measurement of Collins and Sivers asymmetries for transversely polarised deuterons
G. D. Alexeev, M. G. Alexeev, C. Alice, A. Amoroso, V. Andrieux, V. Anosov, S. Asatryan, K. Augsten, W. Augustyniak, C. D. R. Azevedo, B. Badelek, J. Barth, R. Beck, J. Beckers, Y. Bedfer, J. Bernhard, M. Bodlak, F. Bradamante, A. Bressan, W.-C. Chang, et al (167)
Jan 02 2024 hep-ex hep-ph arXiv:2401.00309v1

@misc{2401.00309, author = {G.~D.~Alexeev and M.~G.~Alexeev and C.~Alice and A.~Amoroso and V.~Andrieux and V.~Anosov and S.~Asatryan and K.~Augsten and W.~Augustyniak and C.~D.~R.~Azevedo and B.~Badelek and J.~Barth and R.~Beck and J.~Beckers and Y.~Bedfer and J.~Bernhard and M.~Bodlak and F.~Bradamante and A.~Bressan and W.-C.~Chang and C.~Chatterjee and M.~Chiosso and A.~G.~Chumakov and S.-U.~Chung and A.~Cicuttin and P.~M.~M.~Correia and M.~L.~Crespo and D.~D'Ago and S.~Dalla Torre and S.~S.~Dasgupta and S.~Dasgupta and F.~Delcarro and I.~Denisenko and O.~Yu.~Denisov and S.~V.~Donskov and N.~Doshita and Ch.~Dreisbach and W.~Dunnweber and R.~R.~Dusaev and D.~Ecker and D.~Eremeev and P.~Faccioli and M.~Faessler and M.~Finger and M.~Finger jr.~and H.~Fischer and K.~J.~Flothner and W.~Florian and J.~M.~Friedrich and V.~Frolov and L.G.~Garcia Ordonez and F.~Gautheron and O.~P.~Gavrichtchouk and S.~Gerassimov and J.~Giarra and D.~Giordano and A.~Grasso and A.~Gridin and M.~Grosse Perdekamp and B.~Grube and M.~Gruner and A.~Guskov and P.~Haas and D.~von Harrach and M.~Hoffmann and A.~Hoghmrtsyan and N.~d'Hose and C.-Y.~Hsieh and S.~Huber and S.~Ishimoto and A.~Ivanov and T.~Iwata and V.~Jary and R.~Joosten and E.~Kabuss and F.~Kaspar and A.~Kerbizi and B.~Ketzer and A.~Khatun and G.~V.~Khaustov and T.~Klasek and F.~Klein and J.~H.~Koivuniemi and V.~N.~Kolosov and K.~Kondo Horikawa and I.~Konorov and V.~F.~Konstantinov and A.~Yu.~Korzenev and A.~M.~Kotzinian and O.~M.~Kouznetsov and A.~Koval and Z.~Kral and F.~Krinner and F.~Kunne and K.~Kurek and R.~P.~Kurjata and A.~Kveton and K.~Lavickova and S.~Levorato and Y.-S.~Lian and J.~Lichtenstadt and P.-J.~Lin and R.~Longo and V.~E.~Lyubovitskij and A.~Maggiora and A.~Magnon and N.~Makke and G.~K.~Mallot and A.~Maltsev and A.~Martin and J.~Marzec and J.~Matousek and T.~Matsuda and G.~Mattson and C.~Menezes Pires and F.~Metzger and M.~Meyer and W.~Meyer and Yu.~V.~Mikhailov and M.~Mikhasenko and E.~Mitrofanov and D.~Miura and Y.~Miyachi and R.~Molina and A.~Moretti and A.~Movsisyan and A.~Nagaytsev and D.~Neyret and M.~Niemiec and J.~Novy and W.-D.~Nowak and G.~Nukazuka and A.~G.~Olshevsky and M.~Ostrick and D.~Panzieri and B.~Parsamyan and S.~Paul and H.~Pekeler and J.-C.~Peng and M.~Pesek and D.~V.~Peshekhonov and M.~Peskova and S.~Platchkov and J.~Pochodzalla and V.~A.~Polyakov and M.~Quaresma and C.~Quintans and G.~Reicherz and C.~Riedl and D.~I.~Ryabchikov and A.~Rychter and A.~Rymbekova and V.~D.~Samoylenko and A.~Sandacz and S.~Sarkar and I.~A.~Savin and G.~Sbrizzai and H.~Schmieden and A.~Selyunin and K.~Sharko and L.~Sinha and D.~Spulbeck and A.~Srnka and M.~Stolarski and M.~Sulc and H.~Suzuki and Y.~Takanashi and S.~Tessaro and F.~Tessarotto and A.~Thiel and F.~Tosello and A.~Townsend and T.~Triloki and V.~Tskhay and B.~Valinoti and B.~M.~Veit and J.F.C.A.~Veloso and B.~Ventura and A.~Vijayakumar and M.~Virius and M.~Wagner and S.~Wallner and K.~Zaremba and M.~Zavertyaev and M.~Zemko and E.~Zemlyanichkina and M.~Ziembicki}, title = {{H}igh-statistics measurement of {C}ollins and {S}ivers asymmetries for transversely polarised deuterons}, year = {2024}, eprint = {2401.00309}, note = {arXiv:2401.00309v1} }
PDF
New results are presented on a high-statistics measurement of Collins and Sivers asymmetries of charged hadrons produced in deep inelastic scattering of muons on a transversely polarised $^6$LiD target. The data were taken in 2022 with the COMPASS spectrometer using the 160 \gevv muon beam at CERN, balancing the existing data on transversely polarised proton targets. The first results from about two-thirds of the new data have total uncertainties smaller by up to a factor of three compared to the previous deuteron measurements. Using all the COMPASS proton and deuteron results, both the transversity and the Sivers distribution functions of the $u$ and $d$ quark, as well as the tensor charge in the measured $x$-range are extracted. In particular, the accuracy of the $d$ quark results is significantly improved.
Final COMPASS results on the transverse-spin-dependent azimuthal asymmetries in the pion-induced Drell-Yan process
G. D. Alexeev, M. G. Alexeev, C. Alice, A. Amoroso, V. Andrieux, V. Anosov, K. Augsten, W. Augustyniak, C. D. R. Azevedo, B. Badelek, J. Barth, R. Beck, J. Beckers, Y. Bedfer, J. Bernhard, M. Bodlak, F. Bradamante, A. Bressan, W.-C. Chang, C. Chatterjee, et al (164)
Jan 01 2024 hep-ex hep-ph arXiv:2312.17379v1

@misc{2312.17379, author = {G.~D.~Alexeev and M.~G.~Alexeev and C.~Alice and A.~Amoroso and V.~Andrieux and V.~Anosov and K.~Augsten and W.~Augustyniak and C.~D.~R.~Azevedo and B.~Badelek and J.~Barth and R.~Beck and J.~Beckers and Y.~Bedfer and J.~Bernhard and M.~Bodlak and F.~Bradamante and A.~Bressan and W.-C.~Chang and C.~Chatterjee and M.~Chiosso and A.~G.~Chumakov and S.-U.~Chung and A.~Cicuttin and P.~M.~M.~Correia and M.~L.~Crespo and D.~D'Ago and S.~Dalla Torre and S.~S.~Dasgupta and S.~Dasgupta and F.~Delcarro and I.~Denisenko and O.~Yu.~Denisov and S.~V.~Donskov and N.~Doshita and Ch.~Dreisbach and W.~Dunnweber and R.~R.~Dusaev and D.~Ecker and D.~Eremeev and P.~Faccioli and M.~Faessler and M.~Finger and M.~Finger jr.~and H.~Fischer and K.~J.~Flothner and W.~Florian and J.~M.~Friedrich and V.~Frolov and L.G.~Garcia Ordonez and F.~Gautheron and O.~P.~Gavrichtchouk and S.~Gerassimov and J.~Giarra and D.~Giordano and A.~Grasso and A.~Gridin and M.~Grosse Perdekamp and B.~Grube and M.~Gruner and A.~Guskov and P.~Haas and D.~von Harrach and R.~Heitz and M.~Hoffmann and N.~d'Hose and C.-Y.~Hsieh and S.~Huber and S.~Ishimoto and A.~Ivanov and T.~Iwata and V.~Jary and R.~Joosten and E.~Kabuss and F.~Kaspar and A.~Kerbizi and B.~Ketzer and A.~Khatun and G.~V.~Khaustov and F.~Klein and J.~H.~Koivuniemi and V.~N.~Kolosov and K.~Kondo Horikawa and I.~Konorov and V.~F.~Konstantinov and A.~Yu.~Korzenev and A.~M.~Kotzinian and O.~M.~Kouznetsov and A.~Koval and Z.~Kral and F.~Krinner and F.~Kunne and K.~Kurek and R.~P.~Kurjata and A.~Kveton and K.~Lavickova and S.~Levorato and Y.-S.~Lian and J.~Lichtenstadt and P.-J.~Lin and R.~Longo and V.~E.~Lyubovitskij and A.~Maggiora and A.~Magnon and N.~Makke and G.~K.~Mallot and A.~Maltsev and A.~Martin and J.~Marzec and J.~Matousek and T.~Matsuda and G.~Mattson and C.~Menezes Pires and F.~Metzger and M.~Meyer and W.~Meyer and Yu.~V.~Mikhailov and M.~Mikhasenko and E.~Mitrofanov and D.~Miura and Y.~Miyachi and R.~Molina and A.~Moretti and A.~Nagaytsev and D.~Neyret and M.~Niemiec and J.~Novy and W.-D.~Nowak and G.~Nukazuka and A.~G.~Olshevsky and M.~Ostrick and D.~Panzieri and B.~Parsamyan and S.~Paul and H.~Pekeler and J.-C.~Peng and M.~Pesek and D.~V.~Peshekhonov and M.~Peskova and S.~Platchkov and J.~Pochodzalla and V.~A.~Polyakov and M.~Quaresma and C.~Quintans and G.~Reicherz and C.~Riedl and D.~I.~Ryabchikov and A.~Rychter and A.~Rymbekova and V.~D.~Samoylenko and A.~Sandacz and S.~Sarkar and T.~Savada and I.~A.~Savin and G.~Sbrizzai and H.~Schmieden and A.~Selyunin and K.~Sharko and L.~Sinha and D.~Spulbeck and A.~Srnka and M.~Stolarski and M.~Sulc and H.~Suzuki and S.~Tessaro and F.~Tessarotto and A.~Thiel and F.~Tosello and A.~Townsend and T.~Triloki and V.~Tskhay and B.~Valinoti and B.~M.~Veit and J.F.C.A.~Veloso and B.~Ventura and A.~Vijayakumar and M.~Virius and M.~Wagner and S.~Wallner and K.~Zaremba and M.~Zavertyaev and M.~Zemko and E.~Zemlyanichkina and M.~Ziembicki}, title = {{F}inal {COMPASS} results on the transverse-spin-dependent azimuthal asymmetries in the pion-induced {D}rell-{Y}an process}, year = {2024}, eprint = {2312.17379}, note = {arXiv:2312.17379v1} }
PDF
The COMPASS Collaboration performed measurements of the Drell-Yan process in 2015 and 2018 using a 190 GeV/c $\pi^{-}$ beam impinging on a transversely polarised ammonia target. Combining the data of both years, we present final results on the amplitudes of the five azimuthal modulations in the dimuon production cross section. Three of these transverse-spin-dependent azimuthal asymmetries (TSAs) probe the nucleon leading-twist Sivers, transversity, and pretzelosity transverse-momentum dependent (TMD) parton distribution functions (PDFs). The other two are induced by subleading effects. These TSAs provide unique new inputs for the study of the nucleon TMD PDFs and their universality properties. In particular, the Sivers TSA observed in this measurement is consistent with the fundamental QCD prediction of a sign change of naive time-reversal-odd TMD PDFs when comparing the Drell-Yan process with semi-inclusive measurements of deep inelastic scattering. Also, within the context of model predictions, the observed transversity TSA is consistent with the expectation of a sign change for the Boer-Mulders function.
Collins and Sivers transverse-spin asymmetries in inclusive muoproduction of $\rho^0$ mesons
G. D. Alexeev, M. G. Alexeev, C. Alice, A. Amoroso, V. Andrieux, V. Anosov, K. Augsten, W. Augustyniak, C. D. R. Azevedo, B. Badelek, J. Barth, R. Beck, Y. Bedfer, J. Bernhard, M. Bodlak, F. Bradamante, A. Bressan, V. E. Burtsev, W.-C. Chang, C. Chatterjee, et al (172)
Nov 02 2022 hep-ex hep-ph arXiv:2211.00093v2

@misc{2211.00093, author = {G.~D.~Alexeev and M.~G.~Alexeev and C.~Alice and A.~Amoroso and V.~Andrieux and V.~Anosov and K.~Augsten and W.~Augustyniak and C.~D.~R.~Azevedo and B.~Badelek and J.~Barth and R.~Beck and Y.~Bedfer and J.~Bernhard and M.~Bodlak and F.~Bradamante and A.~Bressan and V.~E.~Burtsev and W.-C.~Chang and C.~Chatterjee and M.~Chiosso and A.~G.~Chumakov and S.-U.~Chung and A.~Cicuttin and P.~M.~M.~Correia and M.~L.~Crespo and D.~D'Ago and S.~Dalla Torre and S.~S.~Dasgupta and S.~Dasgupta and F.~Del Carro and I.~Denisenko and O.~Yu.~Denisov and S.~V.~Donskov and N.~Doshita and Ch.~Dreisbach and W.~Dünnweber and R.~R.~Dusaev and D.~Ecker and A.~Efremov and C.~Elia and D.~Eremeev and P.~Faccioli and M.~Faessler and M.~Finger and M.~Finger jr.~and H.~Fischer and K.~J.~Flöthner and W.~Florian and J.~M.~Friedrich and V.~Frolov and L.G.~Garcia Ordòñez and F.~Gautheron and O.~P.~Gavrichtchouk and S.~Gerassimov and J.~Giarra and D.~Giordano and M.~Gorzellik and A.~Grasso and A.~Gridin and M.~Grosse Perdekamp and B.~Grube and M.~Grüner and A.~Guskov and D.~von Harrach and M.~Hoffmann and N.~Horikawa and N.~d'Hose and C.-Y.~Hsieh and S.~Huber and S.~Ishimoto and A.~Ivanov and T.~Iwata and M.~Jandek and V.~Jary and R.~Joosten and E.~Kabuß and F.~Kaspar and A.~Kerbizi and B.~Ketzer and A.~Khatun and G.~V.~Khaustov and F.~Klein and J.~H.~Koivuniemi and V.~N.~Kolosov and K.~Kondo Horikawa and I.~Konorov and V.~F.~Konstantinov and A.~M.~Korzenev and A.~M.~Kotzinian and O.~M.~Kouznetsov and A.~Koval and Z.~Kral and F.~Krinner and F.~Kunne and K.~Kurek and R.~P.~Kurjata and A.~Kveton and K.~Lavickova and S.~Levorato and Y.-S.~Lian and J.~Lichtenstadt and P.-J.~Lin and R.~Longo and V.~E.~Lyubovitskij and A.~Maggiora and A.~Magnon and N.~Makins and N.~Makke and G.~K.~Mallot and A.~Maltsev and S.~A.~Mamon and A.~Martin and J.~Marzec and J.~Matoušek and T.~Matsuda and G.~Mattson and C.~Menezes Pires and F.~Metzger and M.~Meyer and W.~Meyer and Yu.~V.~Mikhailov and M.~Mikhasenko and E.~Mitrofanov and D.~Miura and Y.~Miyachi and R.~Molina and A.~Moretti and A.~Nagaytsev and C.~Naim and D.~Neyret and J.~Nový and W.-D.~Nowak and G.~Nukazuka and A.~G.~Olshevsky and M.~Ostrick and D.~Panzieri and B.~Parsamyan and S.~Paul and H.~Pekeler and J.-C.~Peng and M.~Pešek and D.~V.~Peshekhonov and M.~Pešková and S.~Platchkov and J.~Pochodzalla and V.~A.~Polyakov and M.~Quaresma and C.~Quintans and G.~Reicherz and C.~Riedl and T.~Rudnicki and D.~I.~Ryabchikov and A.~Rychter and A.~Rymbekova and V.~D.~Samoylenko and A.~Sandacz and S.~Sarkar and I.~A.~Savin and G.~Sbrizzai and H.~Schmieden and A.~Selyunin and K.~Sharko and L.~Sinha and M.~Slunecka and F.~Sozzi and D.~Spülbeck and A.~Srnka and M.~Stolarski and O.~Subrt and M.~Sulc and H.~Suzuki and S.~Tessaro and F.~Tessarotto and A.~Thiel and J.~Tomsa and F.~Tosello and A.~Townsend and T.~Triloki and V.~Tskhay and B.~Valinoti and B.~M.~Veit and J.F.C.A.~Veloso and B.~Ventura and M.~Virius and M.~Wagner and S.~Wallner and K.~Zaremba and M.~Zavertyaev and M.~Zemko and E.~Zemlyanichkina and M.~Ziembicki}, title = {{C}ollins and {S}ivers transverse-spin asymmetries in inclusive muoproduction of $\rho^0$ mesons}, year = {2022}, eprint = {2211.00093}, note = {arXiv:2211.00093v2} }
PDF
The production of vector mesons in deep inelastic scattering is an interesting yet scarsely explored channel to study the transverse spin structure of the nucleon and the related phenomena. The COMPASS collaboration has performed the first measurement of the Collins and Sivers asymmetries for inclusively produced $\rho^0$ mesons. The analysis is based on the data set collected in deep inelastic scattering in $2010$ using a $160\,\,\rm{GeV}/c$ $\mu^+$ beam impinging on a transversely polarized $\rm{NH}_3$ target. The $\rho^{0}$ mesons are selected from oppositely charged hadron pairs, and the asymmetries are extracted as a function of the Bjorken-$x$ variable, the transverse momentum of the pair and the fraction of the energy $z$ carried by the pair. Indications for positive Collins and Sivers asymmetries are observed.
Spin Density Matrix Elements in Exclusive $\rho ^0$ Meson Muoproduction
G. D. Alexeev, M. G. Alexeev, C. Alice, A. Amoroso, V. Andrieux, V. Anosov, K. Augsten, W. Augustyniak, C. D. R. Azevedo, B. Badelek, J. Barth, R. Beck, Y. Bedfer, J. Bernhard, M. Bodlak, F. Bradamante, A. Bressan, V. E. Burtsev, W.-C. Chang, C. Chatterjee, et al (170)
Nov 01 2022 hep-ex hep-ph arXiv:2210.16932v2

@misc{2210.16932, author = {G.~D.~Alexeev and M.~G.~Alexeev and C.~Alice and A.~Amoroso and V.~Andrieux and V.~Anosov and K.~Augsten and W.~Augustyniak and C.~D.~R.~Azevedo and B.~Badelek and J.~Barth and R.~Beck and Y.~Bedfer and J.~Bernhard and M.~Bodlak and F.~Bradamante and A.~Bressan and V.~E.~Burtsev and W.-C.~Chang and C.~Chatterjee and M.~Chiosso and A.~G.~Chumakov and S.-U.~Chung and A.~Cicuttin and P.~M.~M.~Correia and M.~L.~Crespo and D.~D'Ago and S.~Dalla Torre and S.~S.~Dasgupta and S.~Dasgupta and F.~Del Carro and I.~Denisenko and O.~Yu.~Denisov and S.~V.~Donskov and N.~Doshita and Ch.~Dreisbach and W.~Dünnweber and R.~R.~Dusaev and D.~Ecker and A.~Efremov and D.~Eremeev and P.~Faccioli and M.~Faessler and M.~Finger and M.~Finger jr.~and H.~Fischer and K.~J.~Flöthner and W.~Florian and J.~M.~Friedrich and V.~Frolov and L.G.~Garcia Ordòñez and F.~Gautheron and O.~P.~Gavrichtchouk and S.~Gerassimov and J.~Giarra and D.~Giordano and M.~Gorzellik and A.~Grasso and A.~Gridin and M.~Grosse Perdekamp and B.~Grube and M.~Grüner and A.~Guskov and D.~von Harrach and M.~Hoffmann and N.~Horikawa and N.~d'Hose and C.-Y.~Hsieh and S.~Huber and S.~Ishimoto and A.~Ivanov and T.~Iwata and M.~Jandek and V.~Jary and R.~Joosten and E.~Kabuß and F.~Kaspar and A.~Kerbizi and B.~Ketzer and A.~Khatun and G.~V.~Khaustov and F.~Klein and J.~H.~Koivuniemi and V.~N.~Kolosov and K.~Kondo Horikawa and I.~Konorov and V.~F.~Konstantinov and A.~M.~Korzenev and A.~M.~Kotzinian and O.~M.~Kouznetsov and A.~Koval and Z.~Kral and F.~Krinner and F.~Kunne and K.~Kurek and R.~P.~Kurjata and A.~Kveton and K.~Lavickova and S.~Levorato and Y.-S.~Lian and J.~Lichtenstadt and P.-J.~Lin and R.~Longo and V.~E.~Lyubovitskij and A.~Maggiora and A.~Magnon and N.~Makins and N.~Makke and G.~K.~Mallot and A.~Maltsev and S.~A.~Mamon and A.~Martin and J.~Marzec and J.~Matoušek and T.~Matsuda and G.~Mattson and C.~Menezes Pires and F.~Metzger and M.~Meyer and W.~Meyer and Yu.~V.~Mikhailov and M.~Mikhasenko and E.~Mitrofanov and D.~Miura and Y.~Miyachi and R.~Molina and A.~Moretti and A.~Nagaytsev and C.~Naim and D.~Neyret and M.~Niemiec and J.~Nový and W.-D.~Nowak and G.~Nukazuka and A.~G.~Olshevsky and M.~Ostrick and D.~Panzieri and B.~Parsamyan and S.~Paul and H.~Pekeler and J.-C.~Peng and M.~Pešek and D.~V.~Peshekhonov and M.~Pešková and S.~Platchkov and J.~Pochodzalla and V.~A.~Polyakov and M.~Quaresma and C.~Quintans and G.~Reicherz and C.~Riedl and D.~I.~Ryabchikov and A.~Rychter and A.~Rymbekova and V.~D.~Samoylenko and A.~Sandacz and S.~Sarkar and I.~A.~Savin and G.~Sbrizzai and H.~Schmieden and A.~Selyunin and K.~Sharko and L.~Sinha and M.~Slunecka and D.~Spülbeck and A.~Srnka and M.~Stolarski and O.~Subrt and M.~Sulc and H.~Suzuki and S.~Tessaro and F.~Tessarotto and A.~Thiel and J.~Tomsa and F.~Tosello and A.~Townsend and T.~Triloki and V.~Tskhay and B.~Valinoti and B.~M.~Veit and J.F.C.A.~Veloso and B.~Ventura and M.~Virius and M.~Wagner and S.~Wallner and K.~Zaremba and M.~Zavertyaev and M.~Zemko and E.~Zemlyanichkina and M.~Ziembicki}, title = {{S}pin {D}ensity {M}atrix {E}lements in {E}xclusive $\rho ^0$ {M}eson {M}uoproduction}, year = {2022}, eprint = {2210.16932}, note = {arXiv:2210.16932v2} }
PDF
We report on a measurement of Spin Density Matrix Elements (SDMEs) in hard exclusive $\rho ^0$ meson muoproduction at COMPASS using 160~GeV/$c$ polarised $ \mu ^{+}$ and $ \mu ^{-}$ beams impinging on a liquid hydrogen target. The measurement covers the kinematic range 5.0~GeV/$c^2$ $< W <$ 17.0~GeV/$c^2$, 1.0 (GeV/$c$)$^2$ $< Q^2 <$ 10.0 (GeV/$c$)$^2$ and 0.01 (GeV/$c$)$^2$ $< p_{\rm{T}}^2 <$ 0.5 (GeV/$c$)$^2$. Here, $W$ denotes the mass of the final hadronic system, $Q^2$ the virtuality of the exchanged photon, and $p_{\rm{T}}$ the transverse momentum of the $\rho ^0$ meson with respect to the virtual-photon direction. The measured non-zero SDMEs for the transitions of transversely polarised virtual photons to longitudinally polarised vector mesons ($\gamma^*_T \to V^{ }_L$) indicate a violation of $s$-channel helicity conservation. Additionally, we observe a dominant contribution of natural-parity-exchange transitions and a very small contribution of unnatural-parity-exchange transitions, which is compatible with zero within experimental uncertainties. The results provide important input for modelling Generalised Parton Distributions (GPDs). In particular, they may allow one to evaluate in a model-dependent way the role of parton helicity-flip GPDs in exclusive $\rho ^0$ production.
Muon Collider Forum Report
K.M. Black, S. Jindariani, D. Li, F. Maltoni, P. Meade, D. Stratakis, D. Acosta, R. Agarwal, K. Agashe, C. Aime, D. Ally, A. Apresyan, A. Apyan, P. Asadi, D. Athanasakos, Y. Bao, E. Barzi, N. Bartosik, L.A.T. Bauerdick, J. Beacham, et al (165)
Sep 07 2022 hep-ex hep-ph arXiv:2209.01318v3

@misc{2209.01318, author = {K.M.~Black and S.~Jindariani and D.~Li and F.~Maltoni and P.~Meade and D.~Stratakis and D.~Acosta and R.~Agarwal and K.~Agashe and C.~Aime and D.~Ally and A.~Apresyan and A.~Apyan and P.~Asadi and D.~Athanasakos and Y.~Bao and E.~Barzi and N.~Bartosik and L.A.T.~Bauerdick and J.~Beacham and S.~Belomestnykh and J.~S.~Berg and J.~Berryhill and A.~Bertolin and P.C.~Bhat and M.E.~Biagini and K.~Bloom and T.~Bose and A.~Bross and E.~Brost and N.~Bruhwiler and L.~Buonincontri and D.~Buttazzo and V.~Candelise and A.~Canepa and L.~Carpenter and M.~Casarsa and F.~Celiberto and C.~Cesarotti and G.~Chachamis and Z.~Chacko and P.~Chang and S.V.~Chekanov and T.Y.~Chen and M.~Chiesa and T.~Cohen and M.~Costa and N.~Craig and A.~Crivellin and C.~Curatolo and D.~Curtin and G.~Da Molin and S.~Dasu and A.~de Gouvea and D.~Denisov and R.~Dermisek and K.F.~Di Petrillo and T.~Dorigo and J.~M.~Duarte and V.D.~Elvira and R.~Essig and P.~Everaerts and J.~Fan and M.~Felcini and G.~Fiore and D.~Fiorina and M.~Forslund and R.~Franceschini and M.V.~Garzelli and C.E.~Gerber and L.~Giambastiani and D.~Giove and S.~Guiducci and T.~Han and K.~Hermanek and C.~Herwig and J.~Hirschauer and T.~R.~Holmes and S.~Homiller and L.A.~Horyn and A.~Ivanov and B.~Jayatilaka and H.~Jia and C.K.~Jung and Y.~Kahn and D.M.~Kaplan and M.~Kaur and M.~Kawale and P.~Koppenburg and G.~Krintiras and K.~Krizka and B.~Kuchma and L.~Lee and L.~Li and P.~Li and Q.~Li and W.~Li and R.~Lipton and Z.~Liu and S.~Lomte and Q.~Lu and D.~Lucchesi and T.~Luo and K.~Lyu and Y.~Ma and P.~A.~N.~Machado and C.~Madrid and D.J.~Mahon and A.~Mazzacane and N.~McGinnis and C.~McLean and B.~Mele and F.~Meloni and S.C.~Middleton and R.K.~Mishra and N.~Mokhov and A.~Montella and M.~Morandin and S.~Nagaitsev and F.~Nardi and M.S.~Neubauer and D.V.~Neuffer and H.~Newman and R.~Ogaz and I.~Ojalvo and I.~Oksuzian and T.~Orimoto and B.~Ozek and K.~Pachal and S.~Pagan Griso and P.~Panci and V.~Papadimitriou and N.~Pastrone and K.~Pedro and F.~Pellemoine and A.~Perloff and D.~Pinna and F.~Piccinini and Marc-Andre Pleier and S.~Posen and K.~Potamianos and S.~Rappoccio and M.~Reece and L.~Reina and A.~Reinsvold Hall and C.~Riccardi and L.~Ristori and T.~Robens and R.~Ruiz and P.~Sala and D.~Schulte and L.~Sestini and V.~Shiltsev and P.~Snopok and G.~Stark and J.~Stupak III and S .Su and R.~Sundrum and M.~Swiatlowski and M.J.~Syphers and A.~Taffard and W.~Thompson and Y.~Torun and C.G.~Tully and I.~Vai and M.~Valente and U.~van Rienen and R.~van Weelderen and G.~Velev and N.~Venkatasubramanian and L.~Vittorio and C.~Vuosalo and X.~Wang and H.~Weber and R.~Wu and Y.~Wu and A.~Wulzer and K.~Xie and S.~Xie and R.~Yohay and K.~Yonehara and F.~Yu and A.V.~Zlobin and D.~Zuliani and J.~Zurita}, title = {{M}uon {C}ollider {F}orum {R}eport}, year = {2022}, eprint = {2209.01318}, note = {arXiv:2209.01318v3} }
PDF
A multi-TeV muon collider offers a spectacular opportunity in the direct exploration of the energy frontier. Offering a combination of unprecedented energy collisions in a comparatively clean leptonic environment, a high energy muon collider has the unique potential to provide both precision measurements and the highest energy reach in one machine that cannot be paralleled by any currently available technology. The topic generated a lot of excitement in Snowmass meetings and continues to attract a large number of supporters, including many from the early career community. In light of this very strong interest within the US particle physics community, Snowmass Energy, Theory and Accelerator Frontiers created a cross-frontier Muon Collider Forum in November of 2020. The Forum has been meeting on a monthly basis and organized several topical workshops dedicated to physics, accelerator technology, and detector R&D. Findings of the Forum are summarized in this report.
Double $J/\psi$ production in pion-nucleon scattering at COMPASS
G.D. Alexeev, M.G. Alexeev, A. Amoroso, V. Andrieux, V. Anosov, K. Augsten, W. Augustyniak, C.D.R. Azevedo, B. Badelek, M. Ball, J. Barth, R. Beck, Y. Bedfer, J. Bernhard, M. Bodlak, F. Bradamante, A. Bressan, V.E. Burtsev, W.-C. Chang, C. Chatterjee, et al (175)
Apr 06 2022 hep-ex hep-ph arXiv:2204.01817v1

@misc{2204.01817, author = {G.D.~Alexeev and M.G.~Alexeev and A.~Amoroso and V.~Andrieux and V.~Anosov and K.~Augsten and W.~Augustyniak and C.D.R.~Azevedo and B.~Badelek and M.~Ball and J.~Barth and R.~Beck and Y.~Bedfer and J.~Bernhard and M.~Bodlak and F.~Bradamante and A.~Bressan and V.E.~Burtsev and W.-C.~Chang and C.~Chatterjee and M.~Chiosso and A.G.~Chumakov and S.-U.~Chung and A.~Cicuttin and P.M.M.~Correia and M.L.~Crespo and D.~D'Ago and S.~Dalla Torre and S.S.~Dasgupta and S.~Dasgupta and I.~Denisenko and O.Yu.~Denisov and S.V.~Donskov and N.~Doshita and Ch.~Dreisbach and W.~Duennweber and R.R.~Dusaev and A.~Efremov and D.~Eremeev and P.D.~Eversheim and P.~Faccioli and M.~Faessler and M.~Finger and M.~Finger jr.~and H.~Fischer and K.~Floethner and W Florian and C.~Franco and J.M.~Friedrich and V.~Frolov and L.G.~Garcia Ordonez and F.~Gautheron and O.P.~Gavrichtchouk and S.~Gerassimov and J.~Giarra and D.~Giordano and M.~Gorzellik and A.~Grasso and A.~Gridin and S.~Groote and M.~Grosse Perdekamp and B.~Grube and M.~Gruener and A.~Guskov and D.~von Harrach and M.~Hoffmann and N.~Horikawa and N.~d'Hose and C.-Y.~Hsieh and S.~Huber and S.~Ishimoto and A.~Ivanov and T.~Iwata and M.~Jandek and T.~Jary and R.~Joosten and E.~Kabuss and F.~Kaspar and A.~Kerbizi and B.~Ketzer and A.~Khatun and G.V.~Khaustov and Yu.A.~Khokhlov and F.~Klein and J.H.~Koivuniemi and V.N.~Kolosov and K.~Kondo Horikawa and I.~Konorov and V.F.~Konstantinov and A.~Korzenev and S.~Koshkarev and A.M.~Kotzinian and O.M.~Kouznetsov and A.~Koval and Z.~Kral and F.~Krinner and F.~Kunne and K.~Kurek and R.P.~Kurjata and A.~Kveton and K.~Lavickova and S.~Levorato and Y.-S.~Lian and J.~Lichtenstadt and P.-J.~Lin and R.~Longo and V.E.~Lyubovitskij and A.~Maggiora and A.~Magnon and N.~Makins and N.~Makke and G.K.~Mallot and A.~Maltsev and S.A.~Mamon and A.~Martin and J.~Marzec and J.~Matousek and T.~Matsuda and G.~Mattson and C.~Menezes Pires and F.~Metzger and M.~Meyer and W.~Meyer and Yu.V.~Mikhailov and M.~Mikhasenko and E.~Mitrofanov and Y.~Miyachi and R.~Molina and A.~Moretti and A.~Nagaytsev and C.~Naim and D.~Neyret and J.~Novy and W.-D.~Nowak and G.~Nukazuka and A.G.~Olshevsky and M.~Ostrick and D.~Panzieri and B.~Parsamyan and S.~Paul and H.~Pekeler and J.-C.~Peng and M.~Pesek and D.V.~Peshekhonov and M.~Peskova and S.~Platchkov and J.~Pochodzalla and V.A.~Polyakov and J.~Pretz and M.~Quaresma and C.~Quintans and G.~Reicherz and C.~Riedl and T.~Rudnicki and D.I.~Ryabchikov and A.~Rychter and A.~Rymbekova and V.D.~Samoylenko and A.~Sandacz and S.~Sarkar and I.A.~Savin and G.~Sbrizzai and S.~Schmeing and H.~Schmieden and A.~Selyunin and K.~Sharko and L.~Sinha and M.~Slunecka and D.~Spuelbeck and A.~Srnka and D.~Steffen and M.~Stolarski and O.~Subrt and M.~Sulc and H.~Suzuki and S.~Tessaro and F.~Tessarotto and A.~Thiel and J.~Tomsa and F.~Tosello and A.~Townsend and T.~Triloki and V.~Tskhaty and B.~Valinoti and B.M.~Veit and J.~F.~C.~A.~Veloso and B.~Ventura and M.~Virius and M.~Wagner and S.~Wallner and K.~Zaremba and M.~Zavertyaev and M.~Zemko and E.~Zemlyanichkina and M.~Ziembicki}, title = {{D}ouble ${J}/\psi$ production in pion-nucleon scattering at {COMPASS}}, year = {2022}, eprint = {2204.01817}, note = {arXiv:2204.01817v1} }
PDF
We present the study of the production of double $J/\psi$ mesons using COMPASS data collected with a 190 GeV/$c$ $\pi^-$ beam scattering off NH$_{3}$, Al and W targets. Kinematic distributions of the collected double $J/\psi$ events are analysed, and the double $J/\psi$ production cross section is estimated for each of the COMPASS targets. The results are compared to predictions from single- and double-parton scattering models as well as the pion intrinsic charm and the tetraquark exotic resonance hypotheses. It is demonstrated that the single parton scattering production mechanism gives the dominant contribution that is sufficient to describe the data. An upper limit on the double intrinsic charm content of pion is evaluated. No significant signatures that could be associated with exotic tetraquarks are found in the double $J/\psi$ mass spectrum.
Analytic thin wall false vacuum decay rate
Aleksandar Ivanov, Marco Matteini, Miha Nemevšek, Lorenzo Ubaldi
Feb 10 2022 hep-th astro-ph.HE hep-ph arXiv:2202.04498v4

@misc{2202.04498, author = {Aleksandar Ivanov and Marco Matteini and Miha Nemevšek and Lorenzo Ubaldi}, title = {{A}nalytic thin wall false vacuum decay rate}, year = {2022}, eprint = {2202.04498}, howpublished = {J. High Energ. Phys. 2022, 209 (2022)}, doi = {10.1007/JHEP03(2022)209}, note = {arXiv:2202.04498v4} }
PDF
We derive a closed-form false vacuum decay rate at one loop in the thin wall limit, where the true and false vacua are nearly degenerate. We obtain the bounce configuration in $D$ dimensions, together with the Euclidean action with a higher order correction, counter-terms and renormalization group running. We extract the functional determinant via the Gel'fand-Yaglom theorem for low and generic orbital multipoles. The negative and zero eigenvalues appear for low multipoles and the translational zeroes are removed. We compute the fluctuations for generic multipoles, multiply and regulate the orbital modes. We find an explicit finite renormalized decay rate in $D = 3, 4$ and give a closed-form expression for the finite functional determinant in any dimension.
Quantum gravitational states of ultracold neutrons as a tool for probing of beyond-Riemann gravity
A. N. Ivanov, M. Wellenzohn, H. Abele
Sep 22 2021 gr-qc hep-ph hep-th nucl-ex arXiv:2109.09982v1

@misc{2109.09982, author = {A.~N.~Ivanov and M.~Wellenzohn and H.~Abele}, title = {{Q}uantum gravitational states of ultracold neutrons as a tool for probing of beyond-{R}iemann gravity}, year = {2021}, eprint = {2109.09982}, howpublished = {Physics Letters B 822, 136640 (2021)}, doi = {10.1016/j.physletb.2021.136640}, note = {arXiv:2109.09982v1} }
PDF
We analyze a possibility to probe beyond-Riemann gravity (BRG) contributions, introduced by Kostelecky and Li (see Phys. Rev. D 103, 024059 (2021) and Phys. Rev. D 104, 044054 (2021)) on the basis of the Effective Field Theory (EFT) by Kostelecky Phys. Rev. D 69, 105009 (2004). We carry out such an analysis by calculating the BRG contributions to the transition frequencies of the quantum gravitational states of ultracold neutrons (UCNs). These states are being used for a test of interactions beyond the Standard Model (SM) and General Relativity (GR) in the qBOUNCE experiments. We improve by order of magnitude some constraints obtained by Kostelecky and Li (2106.11293 [gr-qc]).
The exotic meson $\pi_1(1600)$ with $J^{PC} = 1^{-+}$ and its decay into $\rho(770)\pi$
M.G. Alexeev, G.D. Alexeev, A. Amoroso, V. Andrieux, V. Anosov, K. Augsten, W. Augustyniak, C.D.R. Azevedo, B. Badelek, F. Balestra, M. Ball, J. Barth, R. Beck, Y. Bedfer, J. Berenguer Antequera, J. Bernhard, M. Bodlak, F. Bradamante, A. Bressan, V.E. Burtsev, et al (176)
Aug 05 2021 hep-ex hep-ph arXiv:2108.01744v2

@misc{2108.01744, author = {M.G.~Alexeev and G.D.~Alexeev and A.~Amoroso and V.~Andrieux and V.~Anosov and K.~Augsten and W.~Augustyniak and C.D.R.~Azevedo and B.~Badelek and F.~Balestra and M.~Ball and J.~Barth and R.~Beck and Y.~Bedfer and J.~Berenguer Antequera and J.~Bernhard and M.~Bodlak and F.~Bradamante and A.~Bressan and V.E.~Burtsev and W.-C.~Chang and C.~Chatterjee and M.~Chiosso and A.G.~Chumakov and S.-U.~Chung and A.~Cicuttin and P.M.M.~Correia and M.L.~Crespo and D.~D'Ago and S.~Dalla Torre and S.S.~Dasgupta and S.~Dasgupta and I.~Denisenko and O.Yu.~Denisov and S.V.~Donskov and N.~Doshita and Ch.~Dreisbach and W.~Duennweber and R.R.~Dusaev and A.~Efremov and D.~Eremeev and P.D.~Eversheim and P.~Faccioli and M.~Faessler and M.~Finger and M.~Finger jr.~and H.~Fischer and K.~Floethner and C.~Franco and J.M.~Friedrich and V.~Frolov and L.G.~Garcia Ordonez and F.~Gautheron and O.P.~Gavrichtchouk and S.~Gerassimov and J.~Giarra and D.~Giordano and M.~Gorzellik and A.~Grasso and A.~Gridin and M.~Grosse Perdekamp and B.~Grube and A.~Guskov and F.~Haas and D.~von Harrach and M.~Hoffmann and R.~Heitz and N.~Horikawa and N.~d'Hose and C.-Y.~Hsieh and S.~Huber and S.~Ishimoto and A.~Ivanov and T.~Iwata and M.~Jandek and T.~Jary and R.~Joosten and E.~Kabuss and F.~Kaspar and A.~Kerbizi and B.~Ketzer and G.V.~Khaustov and Yu.A.~Khokhlov and Yu.~Kisselev and F.~Klein and J.H.~Koivuniemi and V.N.~Kolosov and I.~Konorov and V.F.~Konstantinov and A.M.~Kotzinian and O.M.~Kouznetsov and A.~Koval and Z.~Kral and F.~Krinner and Y.~Kulinich and F.~Kunne and K.~Kurek and R.P.~Kurjata and A.~Kveton and K.~Lavickova and S.~Levorato and Y.-S.~Lian and J.~Lichtenstadt and P.-J.~Lin and R.~Longo and V.E.~Lyubovitskij and A.~Maggiora and A.~Magnon and N.~Makins and N.~Makke and G.K.~Mallot and A.~Maltsev and S.A.~Mamon and B.~Marianski and A.~Martin and J.~Marzec and J.~Matousek and T.~Matsuda and G.~Mattson and F.~Metzger and M.~Meyer and W.~Meyer and Yu.V.~Mikhailov and M.~Mikhasenko and E.~Mitrofanov and Y.~Miyachi and A.~Moretti and A.~Nagaytsev and C.~Naim and D.~Neyret and J.~Novy and W.-D.~Nowak and G.~Nukazuka and A.G.~Olshevsky and M.~Ostrick and D.~Panzieri and B.~Parsamyan and S.~Paul and H.~Pekeler and J.-C.~Peng and M.~Pesek and D.V.~Peshekhonov and M.~Peskova and N.~Pierre and S.~Platchkov and J.~Pochodzalla and V.A.~Polyakov and J.~Pretz and M.~Quaresma and C.~Quintans and G.~Reicherz and C.~Riedl and T.~Rudnicki and D.I.~Ryabchikov and A.~Rymbekova and A.~Rychter and V.D.~Samoylenko and A.~Sandacz and S.~Sarkar and I.A.~Savin and G.~Sbrizzai and S.~Schmeing and H.~Schmieden and A.~Selyunin and K.~Sharko and L.~Sinha and M.~Slunecka and A.~Srnka and D.~Steffen and M.~Stolarski and O.~Subrt and M.~Sulc and H.~Suzuki and S.~Tessaro and F.~Tessarotto and A.~Thiel and J.~Tomsa and F.~Tosello and A.~Townsend and V.~Tskhay and T.~Triloki and S.~Uhl and A.~Vauth and B.M.~Veit and J.~Veloso and B.~Ventura and A.Vidon and M.~Virius and M.~Wagner and S.~Wallner and K.~Zaremba and M.~Zavertyaev and M.~Zemko and E.~Zemlyanichkina and Y.~Zhao and M.~Ziembicki}, title = {{T}he exotic meson $\pi_1(1600)$ with ${J}^{{PC}} = 1^{-+}$ and its decay into $\rho(770)\pi$}, year = {2021}, eprint = {2108.01744}, howpublished = {Phys.Rev.D 105 (2022) 1, 012005}, doi = {10.1103/PhysRevD.105.012005}, note = {arXiv:2108.01744v2} }
PDF
We study the spin-exotic $J^{PC} = 1^{-+}$ amplitude in single-diffractive dissociation of 190 GeV$/c$ pions into $\pi^-\pi^-\pi^+$ using a hydrogen target and confirm the $\pi_1(1600) \to \rho(770) \pi$ amplitude, which interferes with a nonresonant $1^{-+}$ amplitude. We demonstrate that conflicting conclusions from previous studies on these amplitudes can be attributed to different analysis models and different treatment of the dependence of the amplitudes on the squared four-momentum transfer and we thus reconcile their experimental findings. We study the nonresonant contributions to the $\pi^-\pi^-\pi^+$ final state using pseudo-data generated on the basis of a Deck model. Subjecting pseudo-data and real data to the same partial-wave analysis, we find good agreement concerning the spectral shape and its dependence on the squared four-momentum transfer for the $J^{PC} = 1^{-+}$ amplitude and also for amplitudes with other $J^{PC}$ quantum numbers. We investigate for the first time the amplitude of the $\pi^-\pi^+$ subsystem with $J^{PC} = 1^{--}$ in the $3\pi$ amplitude with $J^{PC} = 1^{-+}$ employing the novel freed-isobar analysis scheme. We reveal this $\pi^-\pi^+$ amplitude to be dominated by the $\rho(770)$ for both the $\pi_1(1600)$ and the nonresonant contribution. We determine the $\rho(770)$ resonance parameters within the three-pion final state. These findings largely confirm the underlying assumptions for the isobar model used in all previous partial-wave analyses addressing the $J^{PC} = 1^{-+}$ amplitude.
Radiative corrections of order $O(\alpha E_e/m_N)$ to Sirlin's radiative corrections of order $O(\alpha/\pi)$, induced by the hadronic structure of the neutron
A. N. Ivanov, R. Höllwieser, N. I. Troitskaya, M. Wellenzohn, Ya. A. Berdnikov
May 17 2021 hep-ph nucl-ex nucl-th arXiv:2105.06952v1

@misc{2105.06952, author = {A.~N.~Ivanov and R.~Höllwieser and N.~I.~Troitskaya and M.~Wellenzohn and Ya.~A.~Berdnikov}, title = {{R}adiative corrections of order ${O}(\alpha {E}_e/m_{N})$ to {S}irlin's radiative corrections of order ${O}(\alpha/\pi)$, induced by the hadronic structure of the neutron}, year = {2021}, eprint = {2105.06952}, note = {arXiv:2105.06952v1} }
PDF
We investigate the contributions of the hadronic structure of the neutron to radiative $O(\alpha E_e/m_N)$ corrections (or the inner $O(\alpha E_e/m_N)$ RC) to the neutron beta decay, where $\alpha$, $E_e$ and $m_N$ are the fine-structure constant, the electron energy and the nucleon mass, respectively. We perform the calculation within the effective quantum field theory of strong low-energy pion-nucleon interactions described by the linear $\sigma$-model with chiral $SU(2) \times SU(2)$ symmetry and electroweak hadron-hadron, hadron-lepton and lepton-lepton interactions for the electron-lepton family with $SU(2)_L \times U(1)_Y$ symmetry of the Standard Electroweak Theory (Ivanov et al., Phys. Rev. D99, 093006 (2019)). We show that after renormalization, carried out in accordance with Sirlin's prescription (Sirlin, Phys. Rev. 164, 1767 (1967)), the inner $O(\alpha E_e/m_N)$ RC are of the order of a few parts of $10^{-5} - 10^{-4}$. This agrees well with the results obtained in (Ivanov et al., Phys. Rev. D99, 093006 (2019)).
Storage Rings and Gravitational Waves: Summary and Outlook
A. Berlin, M. Brüggen, O. Buchmueller, P. Chen, R.T. D'Agnolo, R. Deng, J.R. Ellis, S. Ellis, G. Franchetti, A. Ivanov, J.M. Jowett, A.P. Kobushkin, S.Y. Lee, J. Liske, K. Oide, S. Rao, J. Wenninger, M. Wellenzohn, M. Zanetti, F. Zimmermann
May 04 2021 physics.acc-ph gr-qc hep-ex hep-ph arXiv:2105.00992v1

@misc{2105.00992, author = {A.~Berlin and M.~Brüggen and O.~Buchmueller and P.~Chen and R.T.~D'Agnolo and R.~Deng and J.R.~Ellis and S.~Ellis and G.~Franchetti and A.~Ivanov and J.M.~Jowett and A.P.~Kobushkin and S.Y.~Lee and J.~Liske and K.~Oide and S.~Rao and J.~Wenninger and M.~Wellenzohn and M.~Zanetti and F.~Zimmermann}, title = {{S}torage {R}ings and {G}ravitational {W}aves: {S}ummary and {O}utlook}, year = {2021}, eprint = {2105.00992}, note = {arXiv:2105.00992v1} }
PDF
We report some highlights from the ARIES APEC workshop on ``Storage Rings and Gravitational Waves'' (SRGW2021), held in virtual space from 2 February to 18 March 2021, and sketch a tentative landscape for using accelerators and associated technologies for the detection or generation of gravitational waves.
Theoretical description of the neutron beta decay in the standard model at the level of 10^-5
A. N. Ivanov, R. Höllwieser, N. I. Troitskaya, M. Wellenzohn, Ya. A. Berdnkov
Apr 23 2021 hep-ph nucl-ex nucl-th arXiv:2104.11080v3

@misc{2104.11080, author = {A.~N.~Ivanov and R.~Höllwieser and N.~I.~Troitskaya and M.~Wellenzohn and Ya.~A.~Berdnkov}, title = {{T}heoretical description of the neutron beta decay in the standard model at the level of 10^-5}, year = {2021}, eprint = {2104.11080}, howpublished = {Phys. Rev. D104, 033006 (2021)}, note = {arXiv:2104.11080v3} }
PDF
In the framework of the Standard Model (SM) a theoretical description of the neutron beta decay is given at the level of 10^-5. The neutron lifetime and correlation coefficients of the neutron beta decay for a polarized neutron, a polarized electron and an unpolarized proton are calculated at the account for i) the radiative corrections of order O(\alpha E_e/m_N) ~ 10^-5 to Sirlin's outer and inner radiative corrections of order O(\alpha/\pi), ii) the corrections of order O(E^2_e/m^2_N) ~ 10^-5, caused by weak magnetism and proton recoil, and iii) Wilkinson's corrections of order 10^-5 (Wilkinson, Nucl. Phys. A377, 474 (1982)). These corrections define the SM background of the theoretical description of the neutron beta decay at the level of 10^-5, which is required by experimental searches of interactions beyond the SM with experimental uncertainties of a few parts of 10^-5.
On the structure of the correlation coefficients S(E_e) and U(E_e) of the neutron beta decay
A. N. Ivanov, R. Höllwieser, N. I. Troitskaya, M. Wellenzohn, Ya. A. Berdnikov
Feb 04 2021 hep-ph hep-ex nucl-ex nucl-th arXiv:2102.02021v2

@misc{2102.02021, author = {A.~N.~Ivanov and R.~Höllwieser and N.~I.~Troitskaya and M.~Wellenzohn and Ya.~A.~Berdnikov}, title = {{O}n the structure of the correlation coefficients {S}({E}_e) and {U}({E}_e) of the neutron beta decay}, year = {2021}, eprint = {2102.02021}, note = {arXiv:2102.02021v2} }
PDF
In the standard effective V - A theory of low-energy weak interactions (i.e. in the Standard Model (SM)) we analyze the structure of the correlation coefficients S(E_e) and U(E_e), where E_e is the electron energy. These correlation coefficients were introduced to the electron-energy and angular distribution of the neutron beta decay by Ebel and Feldman ( Nucl. Phys. 4, 213 (1957)) in addition to the set of correlation coefficients proposed by Jackson et al. (Phys. Rev. 106, 517 (1957)). The correlation coefficients $S(E_e)$ and $U(E_e)$ are induced by simultaneous correlations of the neutron and electron spins and electron and antineutrino 3-momenta. These correlation structures do no violate discrete P, C and T symmetries. We analyze the contributions of the radiative corrections of order O(alpha/pi), taken to leading order in the large nucleon mass m_N expansion, and corrections of order O(E_e/m_N), caused by weak magnetism and proton recoil. In addition to the obtained SM corrections we calculate the contributions of interactions beyond the SM (BSM contributions) in terms of the phenomenological coupling constants of BSM interactions by Jackson et al. (Phys. Rev. 106, 517 (1957)) and the second class currents by Weinberg (Phys. Rev. 112, 1375 (1958)).
On the correlation coefficient T(E_e) of the neutron beta decay, caused by the correlation structure invariant under discrete P, C and T symmetries
A. N. Ivanov, R. Höllwieser, N. I. Troitskaya, M. Wellenzohn, Ya. A. Berdnikov
Jan 05 2021 hep-ph nucl-ex arXiv:2101.01014v3

@misc{2101.01014, author = {A.~N.~Ivanov and R.~Höllwieser and N.~I.~Troitskaya and M.~Wellenzohn and Ya.~A.~Berdnikov}, title = {{O}n the correlation coefficient {T}({E}_e) of the neutron beta decay, caused by the correlation structure invariant under discrete {P}, {C} and {T} symmetries}, year = {2021}, eprint = {2101.01014}, note = {arXiv:2101.01014v3} }
PDF
We analyze the correlation coefficient T(E_e), which was introduced by Ebel and Feldman (Nucl. Phys. 4, 213 (1957)). The correlation coefficient T(E_e) is induced by the correlations of the neutron spin with the antineutrino 3-momentum and the electron spin with the electron 3-momentum. Such a correlation structure is invariant under discrete P, C and T symmetries. The correlation coefficient T(E_e), calculated to leading order in the large nucleon mass m_N expansion, is equal to T(E_e) = - 2 g_A(1 + g_A)/(1 + 3 g^2_A) = - B_0, i.e. of order |T(E_e)| ~ 1, where $g_A$ is the axial coupling constant. Within the Standard Model (SM) we describe the correlation coefficient $T(E_e)$ at the level of 10^-3 by taking into the radiative corrections of order O(\alpha/\pi) or the outer model-independent radiative corrections, where \alpha is the fine-structure constant, and the corrections of order O(E_e/m_N), caused by weak magnetism and proton recoil. We calculate also the contributions of interactions beyond the SM, including the contributions of the second class currents.
Corrections of order O(E^2_e/m^2_N), caused by weak magnetism and proton recoil, to the neutron lifetime and correlation coefficients of the neutron beta decay
A. N. Ivanov, R. Höllwieser, N. I. Troitskaya, M. Wellenzohn, Ya. A. Berdnikov
Oct 28 2020 hep-ph nucl-ex arXiv:2010.14336v2

@misc{2010.14336, author = {A.~N.~Ivanov and R.~Höllwieser and N.~I.~Troitskaya and M.~Wellenzohn and Ya.~A.~Berdnikov}, title = {{C}orrections of order {O}({E}^2_e/m^2_{N}), caused by weak magnetism and proton recoil, to the neutron lifetime and correlation coefficients of the neutron beta decay}, year = {2020}, eprint = {2010.14336}, note = {arXiv:2010.14336v2} }
PDF
We calculate the contributions of weak magnetism and proton recoil of order O(E^2_e/m^2_N)~10^-5, i.e. to next-to-next-to-leading order in the large nucleon mass expansion, to the neutron lifetime and correlation coefficients of the neutron beta decay, where E_e and m_N are the electron energy and the nucleon mass, respectively. We analyze the electron-energy and angular distribution for the neutron beta decay with a polarized neutron, a polarized electron and an unpolarized proton. Together with Wilkinson's corrections (Nucl. Phys. A 377, 474 (1982) and radiative corrections of order O(alpha E_e/m_N) ~ 10^-5 (Phys. Rev. D 99, 093006 (2019)), calculated as next--to--leading order corrections in the large nucleon mass $m_N$ expansion to Sirlin's corrections of order O(alpha/pi) (Phys. Rev. 164, 1767 (1967)), the corrections of order O(E^2_e/m^2_N) ~ 10^-5 provide an improved level of precision of the theoretical background of the neutron beta decay, calculated in the Standard Model, for experimental searches of contributions of interactions beyond the Standard Model.
Triangle Singularity as the Origin of the $a_1(1420)$
G.D. Alexeev, M.G. Alexeev, A. Amoroso, V. Andrieux, V. Anosov, A. Antoshkin, K. Augsten, W. Augustyniak, C.D.R. Azevedo, B. Badelek, F. Balestra, M. Ball, J. Barth, R. Beck, Y. Bedfer, J. Berenguer Antequera, J. Bernhard, M. Bodlak, F. Bradamante, A. Bressan, et al (178)
Jun 11 2020 hep-ph hep-ex arXiv:2006.05342v3

@misc{2006.05342, author = {G.D.~Alexeev and M.G.~Alexeev and A.~Amoroso and V.~Andrieux and V.~Anosov and A.~Antoshkin and K.~Augsten and W.~Augustyniak and C.D.R.~Azevedo and B.~Badelek and F.~Balestra and M.~Ball and J.~Barth and R.~Beck and Y.~Bedfer and J.~Berenguer Antequera and J.~Bernhard and M.~Bodlak and F.~Bradamante and A.~Bressan and V.E.~Burtsev and W.-C.~Chang and C.~Chatterjee and M.~Chiosso and A.G.~Chumakov and S.-U.~Chung and A.~Cicuttin and P.M.M.~Correia and M.L.~Crespo and D.~D'Ago and S.~Dalla Torre and S.S.~Dasgupta and S.~Dasgupta and I.~Denisenko and O.Yu.~Denisov and S.V.~Donskov and N.~Doshita and Ch.~Dreisbach and W.~Duennweber and R.R.~Dusaev and A.~Efremov and P.D.~Eversheim and P.~Faccioli and M.~Faessler and M.~Finger and M.~Finger jr.~and H.~Fischer and C.~Franco and J.M.~Friedrich and V.~Frolov and F.~Gautheron and O.P.~Gavrichtchouk and S.~Gerassimov and J.~Giarra and I.~Gnesi and M.~Gorzellik and A.~Grasso and A.~Gridin and M.~Grosse Perdekamp and B.~Grube and A.~Guskov and D.~von Harrach and R.~Heitz and F.~Herrmann and N.~Horikawa and N.~d'Hose and C.-Y.~Hsieh and S.~Huber and S.~Ishimoto and A.~Ivanov and T.~Iwata and M.~Jandek and T.~Jary and R.~Joosten and P.~Joerg and E.~Kabuss and F.~Kaspar and A.~Kerbizi and B.~Ketzer and G.V.~Khaustov and Yu.A.~Khokhlov and Yu.~Kisselev and F.~Klein and J.H.~Koivuniemi and V.N.~Kolosov and K.~Kondo and I.~Konorov and V.F.~Konstantinov and A.M.~Kotzinian and O.M.~Kouznetsov and A.~Koval and Z.~Kral and F.~Krinner and Y.~Kulinich and F.~Kunne and K.~Kurek and R.P.~Kurjata and A.~Kveton and K.~Lavickova and S.~Levorato and Y.-S.~Lian and J.~Lichtenstadt and P.-J.~Lin and R.~Longo and V.E.~Lyubovitskij and A.~Maggiora and A.~Magnon and N.~Makins and N.~Makke and G.K.~Mallot and A.~Maltsev and S.A.~Mamon and B.~Marianski and A.~Martin and J.~Marzec and J.~Matousek and T.~Matsuda and G.~Mattson and G.V.~Meshcheryakov and M.~Meyer and W.~Meyer and Yu.V.~Mikhailov and M.~Mikhasenko and E.~Mitrofanov and N.~Mitrofanov and Y.~Miyachi and A.~Moretti and A.~Nagaytsev and C.~Naim and D.~Neyret and J.~Novy and W.-D.~Nowak and G.~Nukazuka and A.S.~Nunes and A.G.~Olshevskiy and M.~Ostrick and D.~Panzieri and B.~Parsamyan and S.~Paul and H.~Pekeler and J.-C.~Peng and M.~Pesek and D.V.~Peshekhonov and M.~Peskova and N.~Pierre and S.~Platchkov and J.~Pochodzalla and V.A.~Polyakov and J.~Pretz and M.~Quaresma and C.~Quintans and G.~Reicherz and C.~Riedl and T.~Rudnicki and D.I.~Ryabchikov and A.~Rybnikov and A.~Rychter and V.D.~Samoylenko and A.~Sandacz and S.~Sarkar and I.A.~Savin and G.~Sbrizzai and H.~Schmieden and A.~Selyunin and L.~Sinha and M.~Slunecka and J.~Smolik and A.~Srnka and D.~Steffen and M.~Stolarski and O.~Subrt and M.~Sulc and H.~Suzuki and P.~Sznajder and S.~Tessaro and F.~Tessarotto and A.~Thiel and J.~Tomsa and F.~Tosello and A.~Townsend and V.~Tskhay and S.~Uhl and B.I.~Vasilishin and A.~Vauth and B.M.~Veit and J.~Veloso and B.~Ventura and A.Vidon and M.~Virius and M.~Wagner and S.~Wallner and K.~Zaremba and P.~Zavada and M.~Zavertyaev and M.~Zemko and E.~Zemlyanichkina and Y.~Zhao and M.~Ziembicki}, title = {{T}riangle {S}ingularity as the {O}rigin of the $a_1(1420)$}, year = {2020}, eprint = {2006.05342}, howpublished = {Phys. Rev. Lett. 127, 082501 (2021)}, doi = {10.1103/PhysRevLett.127.082501}, note = {arXiv:2006.05342v3} }
PDF
The COMPASS experiment recently discovered a new isovector resonance-like signal with axial-vector quantum numbers, the $a_1(1420)$, decaying to $f_0(980)\pi$. With a mass too close to and a width smaller than the axial-vector ground state $a_1(1260)$, it was immediately interpreted as a new light exotic meson, similar to the $X$, $Y$, $Z$ states in the hidden-charm sector. We show that a resonance-like signal fully matching the experimental data is produced by the decay of the $a_1(1260)$ resonance into $K^\ast(\to K\pi)\bar{K}$ and subsequent rescattering through a triangle singularity into the coupled $f_0(980)\pi$ channel. The amplitude for this process is calculated using a new approach based on dispersion relations. The triangle-singularity model is fitted to the partial-wave data of the COMPASS experiment. Despite having less parameters, this fit shows a slightly better quality than the one using a resonance hypothesis and thus eliminates the need for an additional resonance in order to describe the data. We thereby demonstrate for the first time in the light-meson sector that a resonance-like structure in the experimental data can be described by rescattering through a triangle singularity, providing evidence for a genuine three-body effect.
Probing of violation of Lorentz invariance by ultracold neutrons in the Standard Model Extension
A. N. Ivanov, M. Wellenzohn, H. Abele
Aug 06 2019 hep-ph gr-qc nucl-ex arXiv:1908.01498v1

@misc{1908.01498, author = {A.~N.~Ivanov and M.~Wellenzohn and H.~Abele}, title = {{P}robing of violation of {L}orentz invariance by ultracold neutrons in the {S}tandard {M}odel {E}xtension}, year = {2019}, eprint = {1908.01498}, note = {arXiv:1908.01498v1} }
PDF
We analyze a dynamics of ultracold neutrons (UCNs) caused by interactions violating Lorentz invariance within the Standard Model Extension (SME) (Colladay and Kostelecky, Phys. Rev. D55, 6760 (1997) and Kostelecky, Phys. Rev. D69, 105009 (2004)). We use the effective non-relativistic potential for interactions violating Lorentz invariance derived by Kostelecky and Lane (J. Math. Phys. 40, 6245 (1999)) and calculate contributions of these interactions to the transition frequencies of transitions between quantum gravitational states of UCNs bouncing in the gravitational field of the Earth. Using the experimental sensitivity of qBounce experiments we make some estimates of upper bounds of parameters of Lorentz invariance violation in the neutron sector of the SME which can serve as a theoretical basis for an experimental analysis. We show that an experimental analysis of transition frequencies of transitions between quantum gravitational states of unpolarized and polarized UCNs should allow to place some new constraints in comparison to the results adduced by Kostelecky and Russell in Rev. Mod. Phys. 83, 11 (2011); edition 2019, arXiv: 0801.0287v12 [hep-ph].
Precision analysis of pseudoscalar interactions in neutron beta decays
A. N. Ivanov, R. Höllwieser, N. I. Troitskaya, M. Wellenzohn, Ya. A. Berdnikov
May 13 2019 hep-ph gr-qc nucl-ex arXiv:1905.04147v3

@misc{1905.04147, author = {A.~N.~Ivanov and R.~Höllwieser and N.~I.~Troitskaya and M.~Wellenzohn and Ya.~A.~Berdnikov}, title = {{P}recision analysis of pseudoscalar interactions in neutron beta decays}, year = {2019}, eprint = {1905.04147}, note = {arXiv:1905.04147v3} }
PDF
We analyze the contributions of the one-pion-pole (OPP) exchange, caused by strong low-energy interactions, and the pseudoscalar interaction beyond the Standard Model (BSM) to the correlation coefficients of the neutron beta-decays for polarized neutrons, polarized electrons and unpolarized protons. The strength of contributions of pseudoscalar interactions is defined by the effective coupling constant C_ps = C^(OPP)_ps + C^(BSM)_ps. We show that the contribution of the OPP exchange is of order C^(OPP)_ps ~ - 10^(-5). The effective coupling constant C^(BSM)_ps of the pseudoscalar interaction BSM can be in principle complex. Using the results, obtained by Gonzalez-Alonso et al.( Prog. Part. Nucl. Phys. 104, 165 (2019)) we find that the values of the real and imaginary parts of the effective coupling constant C^(BSM)_ps are constrained by - 3.5x10^-5 < ReC^(BSM)_ps < 0 and ImC^(BSM)_ps < - 2.3x10^(-5), respectively. The obtained results can be used as a theoretical background for experimental searches of contributions of interactions BSM in asymmetries of the neutron beta-decays with a polarized neutron, a polarized electron and an unpolarized proton at the level of accuracy of a few parts of $10^{-5}$ or even better (Abele, Hyperfine Interact.237, 155 (2016)).
Radiative corrections of order O(alpha E_e/m_N) to Sirlin's radiative corrections of order O(alpha/pi) to neutron lifetime
A. N. Ivanov, R. Höllwieser, N. I. Troitskaya, M. Wellenzohn, Ya. A. Berdnikov
May 06 2019 hep-ph hep-ex nucl-ex arXiv:1905.01178v2

@misc{1905.01178, author = {A.~N.~Ivanov and R.~Höllwieser and N.~I.~Troitskaya and M.~Wellenzohn and Ya.~A.~Berdnikov}, title = {{R}adiative corrections of order {O}(alpha {E}_e/m_{N}) to {S}irlin's radiative corrections of order {O}(alpha/pi) to neutron lifetime}, year = {2019}, eprint = {1905.01178}, doi = {10.1103/PhysRevD.99.093006}, note = {arXiv:1905.01178v2} }
PDF
We calculate the radiative corrections of order O(alpha E_e/m_N) as next-to-leading order corrections in the large nucleon mass expansion to Sirlin's radiative corrections of order O(alpha/pi) to the neutron lifetime. The calculation is carried out within a quantum field theoretic model of strong low-energy pion--nucleon interactions described by the linear sigma-model (LsM) with chiral SU(2)xSU(2) symmetry and electroweak hadron-hadron, hadron-lepton and lepton-lepton interactions for the electron-lepton family with SU(2)_L x U(1)_Y symmetry of the Standard Electroweak Model (SEM). Such a quantum field theoretic model is some kind a hadronized version of the Standard Model (SM). From a gauge invariant set of the Feynman diagrams with one-photon exchanges we reproduce Sirlin's radiative corrections of order O(alpha/pi), calculated to leading order in the large nucleon mass expansion, and calculate next-to-leading corrections of order O(alpha E_e/m_N). This confirms Sirlin's confidence level of the radiative corrections O(alpha E_e/m_N). The contributions of the LsM are taken in the limit of the infinite mass of the scalar isoscalar sigma-meson. In such a limit the LsM reproduces the results of the current algebra (Weinberg, Phys. Rev. Lett. \bf 18, 188 (1967)) in the form of effective chiral Lagrangians of pion-nucleon interactions with non--linear realization of chiral SU(2)xSU(2) symmetry. In such a limit the L$\sigma$M is also equivalent to Gasser-Leutwyler's chiral quantum field theory or chiral perturbation theory (ChPT) with chiral SU(2)xSU(2)symmetry and the exponential parametrization of a pion-field (Ecker, Prog. Part. Nucl. Phys. \bf 35, 1 (1995)).
Test of the Standard Model in Neutron Beta Decay with Polarized Electron and Unpolarized Neutron and Proton
A. N. Ivanov, R. Höllwieser, N. I. Troitskaya, M. Wellenzohn, Ya. A. Berdnikov
Nov 13 2018 hep-ph gr-qc nucl-ex arXiv:1811.04853v2

@misc{1811.04853, author = {A.~N.~Ivanov and R.~Höllwieser and N.~I.~Troitskaya and M.~Wellenzohn and Ya.~A.~Berdnikov}, title = {{T}est of the {S}tandard {M}odel in {N}eutron {B}eta {D}ecay with {P}olarized {E}lectron and {U}npolarized {N}eutron and {P}roton}, year = {2018}, eprint = {1811.04853}, howpublished = {Phys. Rev. D 99, 053004 (2019)}, doi = {10.1103/PhysRevD.99.053004}, note = {arXiv:1811.04853v2} }
PDF
We calculate the correlation coefficients of the electron-energy and electron-antineutrino angular distribution of the neutron beta decay with polarized electron and unpolarised neutron and proton. The calculation is carried out within the Standard Model (SM) with the contributions, caused by the weak magnetism, proton recoil and radiative corrections of order of 10^-3, Wilkinson's corrections of order 10^-5$(Wilkinson, Nucl. Phys. A377, 474 (1982) and Ivanov et al., Phys. Rev. C95, 055502 (2017)) and the contributions of interactions beyond the SM. The obtained results can be used for the analysis of experimental data on searches of interactions beyond the SM at the level of 10^-4 (Abele, Hyperfine Interact. 237, 155 (2016)). The contributions of G-odd correlations are calculated and found at the level of 10^-5 in agreement with the results obtained by Gardner and Plaster (Phys. Rev. C87, 065504 (2013)) and Ivanov et al. (Phys. Rev. C98, 035503 (2018)).
Neutron Dark Matter Decays and Correlation Coefficients of Neutron Beta Decays
A. N. Ivanov, R. Höllwieser, N. I. Troitskaya, M. Wellenzohn, Ya. A. Berdnikov
Aug 30 2018 hep-ph gr-qc nucl-ex arXiv:1808.09805v3

@misc{1808.09805, author = {A.~N.~Ivanov and R.~Höllwieser and N.~I.~Troitskaya and M.~Wellenzohn and Ya.~A.~Berdnikov}, title = {{N}eutron {D}ark {M}atter {D}ecays and {C}orrelation {C}oefficients of {N}eutron {B}eta {D}ecays}, year = {2018}, eprint = {1808.09805}, note = {arXiv:1808.09805v3} }
PDF
As we have pointed out in (arXiv:1806.10107 [hep-ph]), the existence of neutron dark matter decay modes "n -> chi + anything", where "chi" is a dark matter fermion, for the solution of the neutron lifetime problem changes priorities and demands to describe the neutron lifetime "tau_n = 888.0(2.0)s", measured in beam experiments and defined by the decay modes "n -> p + anything", in the Standard Model (SM). The latter requires the axial coupling constant "lambda" to be equal to "lambda = - 1.2690" (arXiv:1806.10107 [hep-ph]). Since such an axial coupling constant is excluded by experimental data reported by the PERKEO II and UCNA Collaborations, the neutron lifetime "tau_n = 888.0(2.0)s" can be explained only by virtue of interactions beyond the SM, namely, by the Fierz interference term of order "b ~ - 10^-2" dependent on scalar and tensor coupling constants. We give a complete analysis of all correlation coefficients of the neutron beta decays with polarized neutron, taking into account the contributions of scalar and tensor interactions beyond the SM with the Fierz interference term "b ~ - 10^-2". We show that the obtained results agree well with the contemporary experimental data that does not prevent the neutron with the rate of the decay modes "n -> p + anything", measured in beam experiments, to have dark matter decay modes "n -> chi + anything".
Electrodisintegration of Deuteron into Dark Matter and Proton Close to Threshold
A. N. Ivanov, R. Höllwieser, N. I. Troitskaya, M. Wellenzohn, Ya. A. Berdnikov
Jul 13 2018 hep-ph gr-qc hep-ex nucl-ex arXiv:1807.04604v3

@misc{1807.04604, author = {A.~N.~Ivanov and R.~Höllwieser and N.~I.~Troitskaya and M.~Wellenzohn and Ya.~A.~Berdnikov}, title = {{E}lectrodisintegration of {D}euteron into {D}ark {M}atter and {P}roton {C}lose to {T}hreshold}, year = {2018}, eprint = {1807.04604}, note = {arXiv:1807.04604v3} }
PDF
We discuss an investigation of the dark matter decay modes of the neutron, proposed by Fornal and Grinstein (Phys. Rev. Lett. 120 191801 (2018)) and Ivanov et al. ( arXiv:1806.10107 [hep-ph]) for solution of the neutron lifetime anomaly problem, through the analysis of the electrodisintegration of the deuteron d into dark matter fermions chi and protons p close to threshold. We calculate the triple-differential cross section for the reaction e^- + d ->\chi + p + e^- and propose to search for such a dark matter channel in coincidence experiments on the electrodisintegration of the deuteron e^- + d -> n + p + e^- into neutrons n and protons close to threshold with outgoing electrons, protons and neutrons in coincidence. A missing of neutron signals should testify a detection of dark matter fermions.
Neutron Dark Matter Decays
A. N. Ivanov, R. Höllwieser, N. I. Troitskaya, M. Wellenzohn, Ya. A. Berdnikov
Jun 27 2018 hep-ph gr-qc nucl-ex arXiv:1806.10107v4

@misc{1806.10107, author = {A.~N.~Ivanov and R.~Höllwieser and N.~I.~Troitskaya and M.~Wellenzohn and Ya.~A.~Berdnikov}, title = {{N}eutron {D}ark {M}atter {D}ecays}, year = {2018}, eprint = {1806.10107}, note = {arXiv:1806.10107v4} }
PDF
We analyse the discrepancy between the neutron lifetimes measured in the bottle and beam experiments. Following Fornal and Grinstein (Phys. Rev. Lett. 120, 191801 (2018)) we propose an explanation of such a puzzle by the dark matter channels of the neutron decay. However, unlike Fornal and Grinstein in addition to the dark matter decay channel n -> \chi + e^- + e^+, where \chi is a dark matter Dirac fermion and (e^-e^+) is an electron--positron pair, we assume the existence of the dark matter channel n -> chi + \nu_e + \bar\nu_e, where \nu_e \bar\nu_e is the electron neutrino-antineutrino pair. This allows to describe the discrepancy between the measurements of the neutron lifetime even in case of an unobservability of the dark matter decay channel n -> \chi + e^- + e^+, which may be below the reaction threshold. The existence of the coupling n -> \chi + e^- + e^+ can be observed experimentally by measuring electron-neutron scattering e^- + n -> \chi + e^- at very low electron energies, induced with the strength as of the decay n -> \chi + \nu_e + \bar\nu_e$. We propose a gauge invariant quantum field theory model with SU_L(2)\times U_R(1) \times U_R'(1)\times U''_L(1) symmetry for the UV completion of the effective (n\chi \ell \bar\ell) interaction, where \ell(\bar\ell) is electron (positron) or neutrino(antineutrino).
Gauge and Infrared Properties of Hadronic Structure of Nucleon in Neutron Beta Decay to Order O(\alpha/\pi) in Standard V - A Effective Theory with QED and Linear Sigma Model of Strong Low--Energy Interactions
A. N. Ivanov, R. Höllwieser, N. I. Troitskaya, M. Wellenzohn, Ya. A. Berdnikov
Jun 25 2018 hep-ph gr-qc nucl-ex arXiv:1806.08699v1

@misc{1806.08699, author = {A.~N.~Ivanov and R.~Höllwieser and N.~I.~Troitskaya and M.~Wellenzohn and Ya.~A.~Berdnikov}, title = {{G}auge and {I}nfrared {P}roperties of {H}adronic {S}tructure of {N}ucleon in {N}eutron {B}eta {D}ecay to {O}rder {O}(\alpha/\pi) in {S}tandard {V} - {A} {E}ffective {T}heory with {QED} and {L}inear {S}igma {M}odel of {S}trong {L}ow--{E}nergy {I}nteractions}, year = {2018}, eprint = {1806.08699}, note = {arXiv:1806.08699v1} }
PDF
Within the standard V - A theory of weak interactions, Quantum Electrodynamics (QED) and the linear sigma-model (LsM) of strong low-energy hadronic interactions we analyse gauge and infrared properties of hadronic structure of the neutron and proton in the neutron beta decay to leading order in the large nucleon mass expansion. We show that the complete set of Feynman diagrams describing radiative corrections of order O(\alpha/\pi), induced by hadronic structure of the nucleon, to the rate of the neutron beta decay is gauge non-invariant and unrenormalisable. We show that a gauge non-invariant contribution does not depend on the electron energy in agreement with Sirlin's analysis of contributions of strong low-energy interactions (Phys. Rev. 164, 1767 (1967)). We show that infrared divergent and dependent on the electron energy contributions from the neutron radiative beta decay and neutron beta decay, caused by hadronic structure of the nucleon, are cancelled in the neutron lifetime. Nevertheless, we find that divergent contributions of virtual photon exchanges to the neutron lifetime, induced by hadronic structure of the nucleon, are unrenormalisable even formally. Such an unrenormalizability can be explained by the fact that the effective V - A vertex of hadron-lepton current-current interactions is not a vertex of the combined quantum field theory including QED and LsM, which are renormalizable theories.
Infrared Properties of Hadronic Structure of Nucleon in Neutron Beta Decays to Order O(\alpha/\pi) in Standard V - A Effective Theory with QED and Linear Sigma Model of Strong Low--Energy Interactions
A. N. Ivanov, R. Höllwieser, N. I. Troitskaya, M. Wellenzohn, Ya. A. Berdnikov
Jun 13 2018 hep-ph gr-qc nucl-ex arXiv:1806.04630v2

@misc{1806.04630, author = {A.~N.~Ivanov and R.~Höllwieser and N.~I.~Troitskaya and M.~Wellenzohn and Ya.~A.~Berdnikov}, title = {{I}nfrared {P}roperties of {H}adronic {S}tructure of {N}ucleon in {N}eutron {B}eta {D}ecays to {O}rder {O}(\alpha/\pi) in {S}tandard {V} - {A} {E}ffective {T}heory with {QED} and {L}inear {S}igma {M}odel of {S}trong {L}ow--{E}nergy {I}nteractions}, year = {2018}, eprint = {1806.04630}, note = {arXiv:1806.04630v2} }
PDF
Within the standard V - A theory of weak interactions, Quantum Electrodynamics (QED) and the linear sigma-model (LsM) of strong low-energy hadronic interactions we analyse infrared properties of hadronic structure of the neutron and proton in the neutron beta decays to leading order in the large nucleon mass expansion. We confirm validity and high confidence level of contributions of hadronic structure of the nucleon to the radiative corrections, calculated by Sirlin (Phys. Rev. 164, 1767 (1967)) to leading order in the large nucleon mass expansion. At the level of order 10^-5 relative to Sirlin's infrared divergent contribution to the neutron radiative beta decay (inner bremsstrahlung) we find an infrared divergent contribution, induced by hadronic structure of the nucleon through the one-pion-pole exchange, to the rate of the neutron lifetime from the neutron radiative beta decay, which should be cancelled by contributions of virtual photon exchanges to the neutron beta decay. Following Ivanov et al. 1805.09702 [hep-ph] we argue that a consistent analysis of such a cancellation may be carried out well in the combined quantum field theory including the Standard Electroweak Model (SEM) and the LsM of strong low-energy interactions, where the effective V - A hadron-lepton current-current vertex is caused by the W^- - electroweak-boson exchange.
Gauge Properties of Hadronic Structure of Nucleon in Neutron Radiative Beta Decay to Order O(alpha/pi) in Standard V - A Effective Theory with QED and Linear Sigma Model of Strong Low--Energy Interactions
A. N. Ivanov, R. Höllwieser, N. I. Troitskaya, M. Wellenzohn, Ya. A. Berdnikov
May 25 2018 hep-ph gr-qc nucl-ex arXiv:1805.09702v1

@misc{1805.09702, author = {A.~N.~Ivanov and R.~Höllwieser and N.~I.~Troitskaya and M.~Wellenzohn and Ya.~A.~Berdnikov}, title = {{G}auge {P}roperties of {H}adronic {S}tructure of {N}ucleon in {N}eutron {R}adiative {B}eta {D}ecay to {O}rder {O}(alpha/pi) in {S}tandard {V} - {A} {E}ffective {T}heory with {QED} and {L}inear {S}igma {M}odel of {S}trong {L}ow--{E}nergy {I}nteractions}, year = {2018}, eprint = {1805.09702}, note = {arXiv:1805.09702v1} }
PDF
Within the standard V - A theory of weak interactions, Quantum Electrodynamics (QED) and the linear sigma-model (LsM) of strong low-energy hadronic interactions we analyse gauge properties of hadronic structure of the neutron and proton in the neutron radiative beta-decay. We show that the Feynman diagrams, describing contributions of hadronic structure to the amplitude of the neutron radiative beta-decay in the tree-approximation for strong low-energy interactions in the LsM, are gauge invariant. In turn, the complete set of Feynman diagrams, describing the contributions of hadron-photon interactions in the one-hadron-loop approximation, is not gauge invariant. In the infinite limit of the scalar sigma-meson, reproducing the current algebra results (Weinberg, Phys. Rev. Lett. 18, 188 (1967)), and to leading order in the large nucleon mass expansion the Feynman diagrams, violating gauge invariance, do not contribute to the amplitude of the neutron radiative beta-decay in agreement with Sirlin's analysis of strong low-energy interactions in neutron beta decays. We assert that the problem of appearance of gauge non-invariant Feynman diagrams of hadronic structure of the neutron and proton is related to the following. The vertex of the effective V-A weak interactions does not belong to the combined quantum field theory including the LsM and QED. We argue that gauge invariant set of Feynman diagrams of hadrons, coupled to real and virtual photons in neutron beta decays, can be obtained within the combined quantum field theory including the Standard Electroweak Model (SEM) and the LsM, where the effective V-A vertex of weak interactions is a result of the W^- - electroweak boson exchange.
Tests of the Standard Model in Neutron Beta Decay with Polarized Neutron and Electron and Unpolarized Proton
A. N. Ivanov, R. Höllwieser, N. I. Troitskaya, M. Wellenzohn, Ya. A. Berdnikov
May 11 2018 hep-ph astro-ph.CO nucl-ex arXiv:1805.03880v2

@misc{1805.03880, author = {A.~N.~Ivanov and R.~Höllwieser and N.~I.~Troitskaya and M.~Wellenzohn and Ya.~A.~Berdnikov}, title = {{T}ests of the {S}tandard {M}odel in {N}eutron {B}eta {D}ecay with {P}olarized {N}eutron and {E}lectron and {U}npolarized {P}roton}, year = {2018}, eprint = {1805.03880}, howpublished = {Phys. Rev. C 98, 035503 (2018)}, doi = {10.1103/PhysRevC.98.035503}, note = {arXiv:1805.03880v2} }
PDF
We analyse the electron--energy and angular distribution of the neutron beta decay with polarized neutron and electron and unpolarized proton, calculated in Phys. Rev. C 95, 055502 (2017) within the Standard Model (SM), by taking into account the contributions of interactions beyond the SM. After the absorption of vector and axial vector contributions by the axial coupling constant and Cabibbo-Kobayashi-Maskawa (CKM) matrix element (Bhattacharya et al., Phys. Rev. D 85, 054512 (2012) and so on) these are the contributions of scalar and tensor interactions only. The neutron lifetime, correlation coefficients and their averaged values, and asymmetries of the neutron beta decay with polarized neutron and electron are adapted to the analysis of experimental data on searches of contributions of interactions beyond the SM. Using the obtained results we propose some estimates of the values of the scalar and tensor coupling constants of interactions beyond the SM. We use the estimate of the Fierz interference term "b_F = - 0.0028 +/- 0.0026" by Hardy and Towner (Phys. Rev. C 91, 025501 (2015)), the neutron lifetime "tau_n = 880.2(1.0)s"(Particle Data Group, Chin. Phys. C 40, 100001 (2016)) and the experimental data "N_\exp = 0.067 +/- 0.011_\rm stat. +/- 0.004_\rm syst." for the averaged value of the correlation coefficient of the neutron-electron spin-spin correlations, measured by Kozela et al. (Phys. Ref. C 85, 045501 (2012)). The contributions of G-odd correlations are calculated and found at the level of 10^-5 in agreement with the results obtained by Gardner and Plaster (Phys. Rev. C 87, 065504 (2013)).
Light isovector resonances in $\pi^- p \to \pi^-\pi^-\pi^+ p$ at 190 GeV/${\it c}$
M. Aghasyan, M.G. Alexeev, G.D. Alexeev, A. Amoroso, V. Andrieux, N.V. Anfimov, V. Anosov, A. Antoshkin, K. Augsten, W. Augustyniak, A. Austregesilo, C.D.R. Azevedo, B. Badelek, F. Balestra, M. Ball, J. Barth, R. Beck, Y. Bedfer, J. Bernhard, K. Bicker, et al (205)
Feb 19 2018 hep-ex hep-ph arXiv:1802.05913v2

@misc{1802.05913, author = {M.~Aghasyan and M.G.~Alexeev and G.D.~Alexeev and A.~Amoroso and V.~Andrieux and N.V.~Anfimov and V.~Anosov and A.~Antoshkin and K.~Augsten and W.~Augustyniak and A.~Austregesilo and C.D.R.~Azevedo and B.~Badelek and F.~Balestra and M.~Ball and J.~Barth and R.~Beck and Y.~Bedfer and J.~Bernhard and K.~Bicker and E.~R.~Bielert and R.~Birsa and M.~Bodlak and P.~Bordalo and F.~Bradamante and A.~Bressan and M.~Buechele and V.E.~Burtsev and W.-C.~Chang and C.~Chatterjee and M.~Chiosso and I.~Choi and A.G.~Chumakov and S.-U.~Chung and A.~Cicuttin and M.L.~Crespo and S.~Dalla Torre and S.S.~Dasgupta and S.~Dasgupta and O.Yu.~Denisov and L.~Dhara and S.V.~Donskov and N.~Doshita and Ch.~Dreisbach and W.~Duennweber and R.R.~Dusaev and M.~Dziewiecki and A.~Efremov and P.D.~Eversheim and M.~Faessler and A.~Ferrero and M.~Finger and M.~Finger jr.~and H.~Fischer and C.~Franco and N.~du Fresne von Hohenesche and J.M.~Friedrich and V.~Frolov and E.~Fuchey and F.~Gautheron and O.P.~Gavrichtchouk and S.~Gerassimov and J.~Giarra and I.~Gnesi and M.~Gorzellik and A.~Grasso and A.~Gridin and M.~Grosse Perdekamp and B.~Grube and T.~Grussenmeyer and A.~Guskov and F.~Hass and D.~Hahne and G.~Hamar and D.~von Harrach and R.~Heitz and F.~Herrmann and N.~Horikawa and N.~d'Hose and C.-Y.~Hsieh and S.~Huber and S.~Ishimoto and A.~Ivanov and Yu.~Ivanshin and T.~Iwata and V.~Jary and R.~Joosten and P.~Joerg and K.~Juraskova and E.~Kabuss and A.~Kerbizi and B.~Ketzer and G.V.~Khaustov and Yu.A.~Khokhlov and Yu.~Kisselev and F.~Klein and J.H.~Koivuniemi and V.N.~Kolosov and K.~Kondo and I.~Konorov and V.F.~Konstantinov and A.M.~Kotzinian and O.M.~Kouznetsov and Z.~Kral and M.~Kraemer and F.~Krinner and Z.V.~Kroumchtein and Y.~Kulinich and F.~Kunne and K.~Kurek and R.P.~Kurjata and I.I.~Kuznetsov and A.~Kveton and A.A.~Lednev and E.A.~Levchenko and M.~Levillain and S.~Levorato and Y.-S.~Lian and J.~Lichtenstadt and R.~Longo and V.E.~Lyubovitskij and A.~Maggiora and A.~Magnon and N.~Makins and N.~Makke and G.K.~Mallot and S.A.~Mamon and B.~Marianski and A.~Martin and J.~Marzec and J.~Matousek and H.~Matsuda and T.~Matsuda and G.V.~Meshcheryakov and M.~Meyer and W.~Meyer and Yu.V.~Mikhailov and M.~Mikhasenko and E.~Mitrofanov and N.~Mitrofanov and Y.~Miyachi and A.~Moretti and A.~Nagaytsev and F.~Nerling and D.~Neyret and J.~Novy and W.-D.~Nowak and G.~Nukazuka and A.S.~Nunes and A.G.~Olshevsky and I.~Orlov and M.~Ostrick and D.~Panzieri and B.~Parsamyan and S.~Paul and J.-C.~Peng and F.~Pereira and M.~Pesek and M.~Peskova and D.V.~Peshekhonov and N.~Pierre and S.~Platchkov and J.~Pochodzalla and V.A.~Polyakov and J.~Pretz and M.~Quaresma and C.~Quintans and S.~Ramos and C.~Regali and G.~Reicherz and C.~Riedl and N.~S.~Rogacheva and D.I.~Ryabchikov and A.~Rybnikov and A.~Rychter and R.~Salac and V.D.~Samoylenko and A.~Sandacz and C.~Santos and S.~Sarkar and I.A.~Savin and T.~Sawada and G.~Sbrizzai and P.~Schiavon and T.~Schluter and S.~Schmeing and H.~Schmieden and E.~Seder and A.~Selyunin and L.~Silva and L.~Sinha and S.~Sirtl and M.~Slunecka and J.~Smolik and A.~Srnka and D.~Steffen and M.~Stolarski and O.~Subrt and M.~Sulc and H.~Suzuki and A.~Szabelski and T.~Szameitat and P.~Sznajder and M.~Tasevsky and S.~Tessaro and F.~Tessarotto and A.~Thiel and J.~Tomsa and F.~Tosello and V.~Tskhay and S.~Uhl and B.I.~Vasilishin and A.~Vauth and B.M.~Veit and J.~Veloso and A.Vidon and M.~Virius and S.~Wallner and M.~Wilfert and J.~ter Wolbeek and K.~Zaremba and P.~Zavada and M.~Zavertyaev and E.~Zemlyanichkina and M.~Ziembicki}, title = {{L}ight isovector resonances in $\pi^- p \to \pi^-\pi^-\pi^+ p$ at 190 {G}e{V}/${\it c}$}, year = {2018}, eprint = {1802.05913}, note = {arXiv:1802.05913v2} }
PDF
We have performed the most comprehensive resonance-model fit of $\pi^-\pi^-\pi^+$ states using the results of our previously published partial-wave analysis (PWA) of a large data set of diffractive-dissociation events from the reaction $\pi^- + p \to \pi^-\pi^-\pi^+ + p_\text{recoil}$ with a 190 GeV/$c$ pion beam. The PWA results, which were obtained in 100 bins of three-pion mass, $0.5 < m_{3\pi} < 2.5$ GeV/$c^2$, and simultaneously in 11 bins of the reduced four-momentum transfer squared, $0.1 < t' < 1.0$ $($GeV$/c)^2$, are subjected to a resonance-model fit using Breit-Wigner amplitudes to simultaneously describe a subset of 14 selected waves using 11 isovector light-meson states with $J^{PC} = 0^{-+}$, $1^{++}$, $2^{++}$, $2^{-+}$, $4^{++}$, and spin-exotic $1^{-+}$ quantum numbers. The model contains the well-known resonances $\pi(1800)$, $a_1(1260)$, $a_2(1320)$, $\pi_2(1670)$, $\pi_2(1880)$, and $a_4(2040)$. In addition, it includes the disputed $\pi_1(1600)$, the excited states $a_1(1640)$, $a_2(1700)$, and $\pi_2(2005)$, as well as the resonancelike $a_1(1420)$. We measure the resonance parameters mass and width of these objects by combining the information from the PWA results obtained in the 11 $t'$ bins. We extract the relative branching fractions of the $\rho(770) \pi$ and $f_2(1270) \pi$ decays of $a_2(1320)$ and $a_4(2040)$, where the former one is measured for the first time. In a novel approach, we extract the $t'$ dependence of the intensity of the resonances and of their phases. The $t'$ dependence of the intensities of most resonances differs distinctly from the $t'$ dependence of the nonresonant components. For the first time, we determine the $t'$ dependence of the phases of the production amplitudes and confirm that the production mechanism of the Pomeron exchange is common to all resonances.
K$^{-}$ over K$^{+}$ multiplicity ratio for kaons produced in DIS with a large fraction of the virtual-photon energy
R. Akhunzyanov, M.G. Alexeev, G.D. Alexeev, A. Amoroso, V. Andrieux, N.V. Anfimov, V. Anosov, A. Antoshkin, K. Augsten, W. Augustyniak, C.D.R. Azevedo, B. Badelek, F. Balestra, M. Ball, J. Barth, R. Beck, Y. Bedfer, J. Bernhard, K. Bicker, E. R. Bielert, et al (191)
Feb 05 2018 hep-ex hep-ph arXiv:1802.00584v2

@misc{1802.00584, author = {R.~Akhunzyanov and M.G.~Alexeev and G.D.~Alexeev and A.~Amoroso and V.~Andrieux and N.V.~Anfimov and V.~Anosov and A.~Antoshkin and K.~Augsten and W.~Augustyniak and C.D.R.~Azevedo and B.~Badelek and F.~Balestra and M.~Ball and J.~Barth and R.~Beck and Y.~Bedfer and J.~Bernhard and K.~Bicker and E.~R.~Bielert and M.~Bodlak and P.~Bordalo and F.~Bradamante and A.~Bressan and M.~Buechele and V.E.~Burtsev and W.-C.~Chang and C.~Chatterjee and M.~Chiosso and A.G.~Chumakov and S.-U.~Chung and A.~Cicuttin and M.L.~Crespo and S.~Dalla Torre and S.S.~Dasgupta and S.~Dasgupta and O.Yu.~Denisov and L.~Dhara and S.V.~Donskov and N.~Doshita and Ch.~Dreisbach and W.~Duennweber and R.R.~Dusaev and M.~Dziewiecki and A.~Efremov and C.~Elia and P.D.~Eversheim and M.~Faessler and A.~Ferrero and M.~Finger and M.~Finger jr.~and H.~Fischer and C.~Franco and N.~du Fresne von Hohenesche and J.M.~Friedrich and V.~Frolov and F.~Gautheron and O.P.~Gavrichtchouk and S.~Gerassimov and J.~Giarra and I.~Gnesi and M.~Gorzellik and A.~Grasso and A.~Gridin and M.~Grosse Perdekamp and B.~Grube and A.~Guskov and D.~Hahne and G.~Hamar and D.~von Harrach and R.~Heitz and F.~Herrmann and N.~Horikawa and N.~d'Hose and C.-Y.~Hsieh and S.~Huber and S.~Ishimoto and A.~Ivanov and T.~Iwata and M.~Jandek and T.~Jary and R.~Joosten and P.~Joerg and K.~Juraskova and E.~Kabuss and F.~Kaspar and A.~Kerbizi and B.~Ketzer and G.V.~Khaustov and Yu.A.~Khokhlov and Yu.~Kisselev and F.~Klein and J.H.~Koivuniemi and V.N.~Kolosov and K.~Kondo and I.~Konorov and V.F.~Konstantinov and A.M.~Kotzinian and O.M.~Kouznetsov and Z.~Kral and M.~Kraemer and F.~Krinner and Z.V.~Kroumchtein and Y.~Kulinich and F.~Kunne and K.~Kurek and R.P.~Kurjata and A.~Kveton and A.A.~Lednev and S.~Levorato and Y.-S.~Lian and J.~Lichtenstadt and R.~Longo and V.E.~Lyubovitskij and A.~Maggiora and A.~Magnon and N.~Makins and N.~Makke and G.K.~Mallot and S.A.~Mamon and B.~Marianski and A.~Martin and J.~Marzec and J.~Matousek and T.~Matsuda and G.V.~Meshcheryakov and M.~Meyer and W.~Meyer and Yu.V.~Mikhailov and M.~Mikhasenko and E.~Mitrofanov and N.~Mitrofanov and Y.~Miyachi and A.~Moretti and A.~Nagaytsev and D.~Neyret and J.~Novy and W.-D.~Nowak and G.~Nukazuka and A.S.~Nunes and A.G.~Olshevskiy and I.~Orlov and M.~Ostrick and D.~Panzieri and B.~Parsamyan and S.~Paul and J.-C.~Peng and F.~Pereira and M.~Pesek and M.~Peskova and D.V.~Peshekhonov and N.~Pierre and S.~Platchkov and J.~Pochodzalla and V.A.~Polyakov and J.~Pretz and M.~Quaresma and C.~Quintans and S.~Ramos and C.~Regali and G.~Reicherz and C.~Riedl and D.I.~Ryabchikov and A.~Rybnikov and A.~Rychter and R.~Salac and V.D.~Samoylenko and A.~Sandacz and S.~Sarkar and I.A.~Savin and T.~Sawada and G.~Sbrizzai and H.~Schmieden and E.~Seder and A.~Selyunin and L.~Silva and L.~Sinha and S.~Sirtl and M.~Slunecka and J.~Smolik and A.~Srnka and D.~Steffen and M.~Stolarski and O.~Subrt and M.~Sulc and H.~Suzuki and A.~Szabelski and T.~Szameitat and P.~Sznajder and M.~Tasevsky and S.~Tessaro and F.~Tessarotto and A.~Thiel and J.~Tomsa and F.~Tosello and V.~Tskhay and S.~Uhl and B.I.~Vasilishin and A.~Vauth and B.M.~Veit and J.~Veloso and A.Vidon and M.~Virius and M.~Wagner and S.~Wallner and M.~Wilfert and K.~Zaremba and P.~Zavada and M.~Zavertyaev and E.~Zemlyanichkina and M.~Ziembicki}, title = {{K}$^{-}$ over {K}$^{+}$ multiplicity ratio for kaons produced in {DIS} with a large fraction of the virtual-photon energy}, year = {2018}, eprint = {1802.00584}, note = {arXiv:1802.00584v2} }
PDF
The K$^{-}$ over K$^{+}$ multiplicity ratio is measured in deep-inelastic scattering, for the first time for kaons carrying a large fraction $z$ of the virtual-photon energy. The data were obtained by the COMPASS collaboration using a 160 GeV muon beam and an isoscalar $^6$LiD target. The regime of deep-inelastic scattering is ensured by requiring $Q^2>1$ (GeV/$c)^2$ for the photon virtuality and $W>5$ GeV/$c^2$ for the invariant mass of the produced hadronic system. Kaons are identified in the momentum range from 12 GeV/$c$ to 40 GeV/$c$, thereby restricting the range in Bjorken-$x$ to $0.01<x<0.40$. The $z$-dependence of the multiplicity ratio is studied for $z>0.75$. For very large values of $z$, $i.e.$ $z>0.8$, we observe the kaon multiplicity ratio to fall below the lower limits expected from calculations based on leading and next-to-leading order perturbative quantum chromodynamics. Also, the kaon multiplicity ratio shows a strong dependence on the missing mass of the single-kaon production process. This suggests that within the perturbative quantum chromodynamics formalism an additional correction may be required, which takes into account the phase space available for hadronisation.
New analysis of $\eta\pi$ tensor resonances measured at the COMPASS experiment
A. Jackura, C. Fernandez-Ramirez, M. Mikhasenko, A. Pilloni, V. Mathieu, J. Nys, V. Pauk, A. P. Szczepaniak, G. Fox, M. Aghasyan, R. Akhunzyanov, M.G. Alexeev, G.D. Alexeev, A. Amoroso, V. Andrieux, N.V. Anfimov, V. Anosov, A. Antoshkin, K. Augsten, W. Augustyniak, et al (217)
Jul 11 2017 hep-ph hep-ex arXiv:1707.02848v1

@misc{1707.02848, author = {A.~Jackura and C.~Fernandez-Ramirez and M.~Mikhasenko and A.~Pilloni and V.~Mathieu and J.~Nys and V.~Pauk and A.~P.~Szczepaniak and G.~Fox and M.~Aghasyan and R.~Akhunzyanov and M.G.~Alexeev and G.D.~Alexeev and A.~Amoroso and V.~Andrieux and N.V.~Anfimov and V.~Anosov and A.~Antoshkin and K.~Augsten and W.~Augustyniak and A.~Austregesilo and C.D.R.~Azevedo and B.~Badelek and F.~Balestra and M.~Ball and J.~Barth and R.~Beck and Y.~Bedfer and J.~Bernhard and K.~Bicker and E.~R.~Bielert and R.~Birsa and M.~Bodlak and P.~Bordalo and F.~Bradamante and A.~Bressan and M.~Buechele and V.E.~Burtsev and W.-C.~Chang and C.~Chatterjee and M.~Chiosso and I.~Choi and A.G.~Chumakov and S.-U.~Chung and A.~Cicuttin and M.L.~Crespo and S.~Dalla Torre and S.S.~Dasgupta and S.~Dasgupta and O.Yu.~Denisov and L.~Dhara and S.V.~Donskov and N.~Doshita and Ch.~Dreisbach and W.~Duennweber and R.R.~Dusaev and M.~Dziewiecki and A.~Efremov and P.D.~Eversheim and M.~Faessler and A.~Ferrero and M.~Finger and M.~Finger jr.~and H.~Fischer and C.~Franco and N.~du Fresne von Hohenesche and J.M.~Friedrich and V.~Frolov and E.~Fuchey and F.~Gautheron and O.P.~Gavrichtchouk and S.~Gerassimov and J.~Giarra and F.~Giordano and I.~Gnesi and M.~Gorzellik and A.~Grasso and M.~Grosse Perdekamp and B.~Grube and T.~Grussenmeyer and A.~Guskov and D.~Hahne and G.~Hamar and D.~von Harrach and F.H.~Heinsius and R.~Heitz and F.~Herrmann and N.~Horikawa and N.~d'Hose and C.-Y.~Hsieh and S.~Huber and S.~Ishimoto and A.~Ivanov and Yu.~Ivanshin and T.~Iwata and V.~Jary and R.~Joosten and P.~Joerg and E.~Kabuss and A.~Kerbizi and B.~Ketzer and G.V.~Khaustov and Yu.A.~Khokhlov and Yu.~Kisselev and F.~Klein and J.H.~Koivuniemi and V.N.~Kolosov and K.~Kondo and K.~Koenigsmann and I.~Konorov and V.F.~Konstantinov and A.M.~Kotzinian and O.M.~Kouznetsov and Z.~Kral and M.~Kraemer and P.~Kremser and F.~Krinner and Z.V.~Kroumchtein and Y.~Kulinich and F.~Kunne and K.~Kurek and R.P.~Kurjata and I.I.~Kuznetsov and A.~Kveton and A.A.~Lednev and E.A.~Levchenko and M.~Levillain and S.~Levorato and Y.-S.~Lian and J.~Lichtenstadt and R.~Longo and V.E.~Lyubovitskij and A.~Maggiora and A.~Magnon and N.~Makins and N.~Makke and G.K.~Mallot and S.A.~Mamon and B.~Marianski and A.~Martin and J.~Marzec and J.~Matousek and H.~Matsuda and T.~Matsuda and G.V.~Meshcheryakov and M.~Meyer and W.~Meyer and Yu.V.~Mikhailov and M.~Mikhasenko and E.~Mitrofanov and N.~Mitrofanov and Y.~Miyachi and A.~Nagaytsev and F.~Nerling and D.~Neyret and J.~Novy and W.-D.~Nowak and G.~Nukazuka and A.S.~Nunes and A.G.~Olshevsky and I.~Orlov and M.~Ostrick and D.~Panzieri and B.~Parsamyan and S.~Paul and J.-C.~Peng and F.~Pereira and M.~Pesek and M.~Peskova and D.V.~Peshekhonov and N.~Pierre and S.~Platchkov and J.~Pochodzalla and V.A.~Polyakov and J.~Pretz and M.~Quaresma and C.~Quintans and S.~Ramos and C.~Regali and G.~Reicherz and C.~Riedl and N.S.~Rogacheva and D.I.~Ryabchikov and A.~Rybnikov and A.~Rychter and R.~Salac and V.D.~Samoylenko and A.~Sandacz and C.~Santos and S.~Sarkar and I.A.~Savin and T.~Sawada and G.~Sbrizzai and P.~Schiavon and T.~Schluter and K.~Schmidt and H.~Schmieden and K.~Schoenning and E.~Seder and A.~Selyunin and L.~Silva and L.~Sinha and S.~Sirtl and M.~Slunecka and J.~Smolik and A.~Srnka and D.~Steffen and M.~Stolarski and O.~Subrt and M.~Sulc and H.~Suzuki and A.~Szabelski and T.~Szameitat and P.~Sznajder and M.~Tasevsky and S.~Tessaro and F.~Tessarotto and A.~Thiel and J.~Tomsa and F.~Tosello and V.~Tskhay and S.~Uhl and B.I.~Vasilishin and A.~Vauth and J.~Veloso and A.Vidon and M.~Virius and S.~Wallner and T.~Weisrock and M.~Wilfert and J.~ter Wolbeek and K.~Zaremba and P.~Zavada and M.~Zavertyaev and E.~Zemlyanichkina and N.~Zhuravlev and M.~Ziembicki}, title = {{N}ew analysis of $\eta\pi$ tensor resonances measured at the {COMPASS} experiment}, year = {2017}, eprint = {1707.02848}, note = {arXiv:1707.02848v1} }
PDF
We present a new amplitude analysis of the $\eta\pi$ $D$-wave in $\pi^- p\to \eta\pi^- p$ measured by COMPASS. Employing an analytical model based on the principles of the relativistic $S$-matrix, we find two resonances that can be identified with the $a_2(1320)$ and the excited $a_2^\prime(1700)$, and perform a comprehensive analysis of their pole positions. For the mass and width of the $a_2$ we find $M=(1307 \pm 1 \pm 6)$~MeV and $\Gamma=(112 \pm 1 \pm 8)$~MeV, and for the excited state $a_2^\prime$ we obtain $M=(1720 \pm 10 \pm 60)$~MeV and $\Gamma=(280\pm 10 \pm 70)$~MeV, respectively.
Precision Theoretical Analysis of Neutron Radiative Beta Decay to Order "O(\alpha^2/\pi^2)"
A. N. Ivanov, R. Höllwieser, N. I. Troitskaya, M. Wellenzohn, Ya. A. Berdnikov
Jun 28 2017 hep-ph hep-ex nucl-ex nucl-th arXiv:1706.08687v1

@misc{1706.08687, author = {A.~N.~Ivanov and R.~Höllwieser and N.~I.~Troitskaya and M.~Wellenzohn and Ya.~A.~Berdnikov}, title = {{P}recision {T}heoretical {A}nalysis of {N}eutron {R}adiative {B}eta {D}ecay to {O}rder "{O}(\alpha^2/\pi^2)"}, year = {2017}, eprint = {1706.08687}, howpublished = {Phys. Rev. D95, 113006 (2017)}, doi = {10.1103/PhysRevD.95.113006}, note = {arXiv:1706.08687v1} }
PDF
In the Standard Model (SM) we calculate the decay rate of the neutron radiative beta decay to order "O(\alpha^2/\pi^2 ~ 10^-5)", where "\alpha$"is the fine--structure constant, and radiative corrections to order "O(\alpha/\pi ~ 10^-3)". The obtained results together with the recent analysis of the neutron radiative beta decay to next-to-leading order in the large proton-mass expansion, performed by Ivanov et al. Phys. Rev. D95, 033007 (2017), describe recent experimental data by the RDK II Collaboration (Bales et al., Phys. Rev. Lett. 116, 242501 (2016)) within 1.5 standard deviations. We argue a substantial influence of strong low-energy interactions of hadrons coupled to photons on the properties of the amplitude of the neutron radiative beta decay under gauge transformations of real and virtual photons.
Lorentz Structure of Vector Part of Matrix Elements of Transitions n <-> p, Caused by Strong Low-Energy Interactions and Hypothesis of Conservation of Charged Vector Current
A. N. Ivanov
Jun 01 2017 hep-ph hep-ex nucl-ex nucl-th arXiv:1705.11102v2

@misc{1705.11102, author = {A.~N.~Ivanov}, title = {{L}orentz {S}tructure of {V}ector {P}art of {M}atrix {E}lements of {T}ransitions n <-> p, {C}aused by {S}trong {L}ow-{E}nergy {I}nteractions and {H}ypothesis of {C}onservation of {C}harged {V}ector {C}urrent}, year = {2017}, eprint = {1705.11102}, note = {arXiv:1705.11102v2} }
PDF
We analyse the Lorentz structure of the matrix elements of the transitions "neutron <-->proton", induced by the charged hadronic vector current. We show that the term maintaining conservation of the charged hadronic vector current even for different masses of the neutron and proton (see T. Leitner et al., Phys. Rev. C 73, 065502 (2006) and A. M. Ankowski, arXiv:1601.06169 [hep-ph]) has a dynamical origin, related to the G-even first class current contribution. We show that because of invariance of strong low-energy interactions under the G-parity transformations, the G-odd contribution with the Lorentz structure $q_{\mu}$, where $q_{\mu}$ is a momentum transferred, does not appear in the matrix elements of the ``neutron <-> proton' transitions.
Comment on "On the implementation of CVC in weak charged-current proton-neutron transitions" by C. Giunti, arXiv: 1602.00215 [hep-ph]
A. N. Ivanov
May 29 2017 hep-ph hep-ex nucl-ex nucl-th arXiv:1705.09573v1

@misc{1705.09573, author = {A.~N.~Ivanov}, title = {{C}omment on "{O}n the implementation of {CVC} in weak charged-current proton-neutron transitions" by {C}. {G}iunti, ar{X}iv: 1602.00215 [hep-ph]}, year = {2017}, eprint = {1705.09573}, note = {arXiv:1705.09573v1} }
PDF
We show that the term maintaining conservation of the charged vector current for the transitions "neutron <-> proton" even for different masses of the neutron and proton (see T. Leitner et al., Phys. Rev. C \bf 73, 065502 (2006) and A. M. Ankowski, arXiv:1601.06169 [hep-ph]) is related to the first class current contribution but not to the second class one as has been pointed out by C. Giunti, arXiv: 1602.00215 [hep-ph].
Precision analysis of electron energy spectrum and angular distribution of neutron beta decay with polarized neutron and electron
A. N. Ivanov, R. Höllwieser, N. I. Troitskaya, M. Wellenzohn, Ya. A. Berdnikov
May 23 2017 hep-ph astro-ph.CO hep-ex nucl-ex arXiv:1705.07330v3

@misc{1705.07330, author = {A.~N.~Ivanov and R.~Höllwieser and N.~I.~Troitskaya and M.~Wellenzohn and Ya.~A.~Berdnikov}, title = {{P}recision analysis of electron energy spectrum and angular distribution of neutron beta decay with polarized neutron and electron}, year = {2017}, eprint = {1705.07330}, howpublished = {Phys. Rev. C 95, 055502 (2017)}, doi = {10.1103/PhysRevC.95.055502}, note = {arXiv:1705.07330v3} }
PDF
We give a precision analysis of the correlation coefficients of the electron-energy spectrum and angular distribution of the beta decay and radiative beta decay of the neutron with polarized neutron and electron to order 10^(-3). The calculation of correlation coefficients is carried out within the Standard model with contributions of order 10^(-3), caused by the weak magnetism and proton recoil, taken to next-to-leading order in the large proton mass expansion, and with radiative corrections of order "alpha/pi ~ 10^(-3", calculated to leading order in the large proton mass expansion. The obtained results can be used for the planning of experiments on the search for contributions of order 10^(-4) of interactions beyond the Standard model.
First measurement of transverse-spin-dependent azimuthal asymmetries in the Drell-Yan process
Aghasyan, R. Akhunzyanov, M.G. Alexeev, G.D. Alexeev, A. Amoroso, V. Andrieux, N.V. Anfimov, V. Anosov, A. Antoshkin, K. Augsten, W. Augustyniak, A. Austregesilo, C.D.R. Azevedo, B. Badelek, F. Balestra, M. Ball, J. Barth, R. Beck, Y. Bedfer, J. Bernhard, et al (200)
Apr 04 2017 hep-ex hep-ph arXiv:1704.00488v1

@misc{1704.00488, author = {Aghasyan and R.~Akhunzyanov and M.G.~Alexeev and G.D.~Alexeev and A.~Amoroso and V.~Andrieux and N.V.~Anfimov and V.~Anosov and A.~Antoshkin and K.~Augsten and W.~Augustyniak and A.~Austregesilo and C.D.R.~Azevedo and B.~Badelek and F.~Balestra and M.~Ball and J.~Barth and R.~Beck and Y.~Bedfer and J.~Bernhard and K.~Bicker and E.~R.~Bielert and R.~Birsa and M.~Bodlak and P.~Bordalo and F.~Bradamante and C.~Braun and A.~Bressan and M.~Buechele and W.-C.~Chang and C.~Chatterjee and M.~Chiosso and I.~Choi and S.-U.~Chung and A.~Cicuttin and M.L.~Crespo and S.~Dalla Torre and S.S.~Dasgupta and S.~Dasgupta and O.Yu.~Denisov and L.~Dhara and S.V.~Donskov and N.~Doshita and Ch.~Dreisbach and W.~Duennweber and M.~Dziewiecki and A.~Efremov and P.D.~Eversheim and M.~Faessler and A.~Ferrero and M.~Finger and M.~Finger jr.~and H.~Fischer and C.~Franco and N.~du Fresne von Hohenesche and J.M.~Friedrich and V.~Frolov and E.~Fuchey and F.~Gautheron and O.P.~Gavrichtchouk and S.~Gerassimov and J.~Giarra and F.~Giordano and I.~Gnesi and M.~Gorzellik and A.~Grasso and M.~Grosse Perdekamp and B.~Grube and T.~Grussenmeyer and A.~Guskov and D.~Hahne and G.~Hamar and D.~von Harrach and F.H.~Heinsius and R.~Heitz and F.~Herrmann and N.~Horikawa and N.~d'Hose and C.-Y.~Hsieh and S.~Huber and S.~Ishimoto and A.~Ivanov and Yu.~Ivanshin and T.~Iwata and V.~Jary and R.~Joosten and P.~Joerg and E.~Kabuss and A.~Kerbizi and B.~Ketzer and G.V.~Khaustov and Yu.A.~Khokhlov and Yu.~Kisselev and F.~Klein and J.H.~Koivuniemi and V.N.~Kolosov and K.~Kondo and K.~Koenigsmann and I.~Konorov and V.F.~Konstantinov and A.M.~Kotzinian and O.M.~Kouznetsov and Z.~Kral and M.~Kraemer and P.~Kremser and F.~Krinner and Z.V.~Kroumchtein and Y.~Kulinich and F.~Kunne and K.~Kurek and R.P.~Kurjata and A.~Kveton and A.A.~Lednev and M.~Levillain and S.~Levorato and Y.-S.~Lian and J.~Lichtenstadt and R.~Longo and A.~Maggiora and A.~Magnon and N.~Makins and N.~Makke and G.K.~Mallot and B.~Marianski and A.~Martin and J.~Marzec and J.~Matousek and H.~Matsuda and T.~Matsuda and G.V.~Meshcheryakov and M.~Meyer and W.~Meyer and Yu.V.~Mikhailov and M.~Mikhasenko and E.~Mitrofanov and N.~Mitrofanov and Y.~Miyachi and A.~Nagaytsev and F.~Nerling and D.~Neyret and J.~Novy and W.-D.~Nowak and G.~Nukazuka and A.S.~Nunes and A.G.~Olshevsky and I.~Orlov and M.~Ostrick and D.~Panzieri and B.~Parsamyan and S.~Paul and J.-C.~Peng and F.~Pereira and M.~Pesek and D.V.~Peshekhonov and N.~Pierre and S.~Platchkov and J.~Pochodzalla and V.A.~Polyakov and J.~Pretz and M.~Quaresma and C.~Quintans and S.~Ramos and C.~Regali and G.~Reicherz and C.~Riedl and N.S.~Rogacheva and M.~Roskot and D.I.~Ryabchikov and A.~Rybnikov and A.~Rychter and R.~Salac and V.D.~Samoylenko and A.~Sandacz and C.~Santos and S.~Sarkar and I.A.~Savin and T.~Sawada and G.~Sbrizzai and P.~Schiavon and K.~Schmidt and H.~Schmieden and K.~Schoenning and E.~Seder and A.~Selyunin and L.~Silva and L.~Sinha and S.~Sirtl and M.~Slunecka and J.~Smolik and A.~Srnka and D.~Steffen and M.~Stolarski and O.~Subrt and M.~Sulc and H.~Suzuki and A.~Szabelski and T.~Szameitat and P.~Sznajder and M.~Tasevsky and S.~Tessaro and F.~Tessarotto and A.~Thiel and J.~Tomsa and F.~Tosello and V.~Tskhay and S.~Uhl and A.~Vauth and J.~Veloso and M.~Virius and J.~Vondra and S.~Wallner and T.~Weisrock and M.~Wilfert and J.~ter Wolbeek and K.~Zaremba and P.~Zavada and M.~Zavertyaev and E.~Zemlyanichkina and N.~Zhuravlev and M.~Ziembicki}, title = {{F}irst measurement of transverse-spin-dependent azimuthal asymmetries in the {D}rell-{Y}an process}, year = {2017}, eprint = {1704.00488}, note = {arXiv:1704.00488v1} }
PDF
The first measurement of transverse-spin-dependent azimuthal asymmetries in the pion-induced Drell-Yan (DY) process is reported. We use the CERN SPS 190 GeV/$c$, $\pi^{-}$ beam and a transversely polarized ammonia target. Three azimuthal asymmetries giving access to different transverse-momentum-dependent (TMD) parton distribution functions (PDFs) are extracted using dimuon events with invariant mass between 4.3 GeV/$c^2$ and 8.5 GeV/$c^2$. The observed sign of the Sivers asymmetry is found to be consistent with the fundamental prediction of Quantum Chromodynamics (QCD) that the Sivers TMD PDFs extracted from DY have a sign opposite to the one extracted from semi-inclusive deep-inelastic scattering (SIDIS) data. We present two other asymmetries originating from the pion Boer-Mulders TMD PDFs convoluted with either the nucleon transversity or pretzelosity TMD PDFs. These DY results are obtained at a hard scale comparable to that of a recent COMPASS SIDIS measurement and hence allow unique tests of fundamental QCD universality predictions.
Precision Theoretical Analysis of Neutron Radiative Beta Decay
A. N. Ivanov, R. Höllwieser, N. I. Troitskaya, M. Wellenzohn, Ya. A. Berdnikov
Jan 18 2017 hep-ph hep-ex nucl-ex arXiv:1701.04613v1

@misc{1701.04613, author = {A.~N.~Ivanov and R.~Höllwieser and N.~I.~Troitskaya and M.~Wellenzohn and Ya.~A.~Berdnikov}, title = {{P}recision {T}heoretical {A}nalysis of {N}eutron {R}adiative {B}eta {D}ecay}, year = {2017}, eprint = {1701.04613}, note = {arXiv:1701.04613v1} }
PDF
In the Standard Model of electroweak interactions and in the tree--approximation we calculate the rate and branching ratio of the neutron radiative beta decay with one-real photon emission by taking into account the contributions of the weak magnetism and proton recoil to order 1/m_p of the large proton mass m_p expansion. We find that the obtained contributions of the weak magnetism and proton recoil increase the rate and branching ratio of the neutron radiative beta decay by about 0.70%. This is large compared with the contribution of the weak magnetism and proton recoil of about 0.16% to the rate of the neutron beta decay, calculated in Phys. Rev. D88, 073002 (2013).
First measurement of the Sivers asymmetry for gluons from SIDIS data
C. Adolph, M. Aghasyan, R. Akhunzyanov, M.G. Alexeev, G.D. Alexeev, A. Amoroso, V. Andrieux, N.V. Anfimov, V. Anosov, A. Antoshkin, K. Augsten, W. Augustyniak, A. Austregesilo, C.D.R. Azevedo, B. Badelek, F. Balestra, M. Ball, J. Barth, R. Beck, Y. Bedfer, et al (207)
Jan 11 2017 hep-ex hep-ph arXiv:1701.02453v1

@misc{1701.02453, author = {C.~Adolph and M.~Aghasyan and R.~Akhunzyanov and M.G.~Alexeev and G.D.~Alexeev and A.~Amoroso and V.~Andrieux and N.V.~Anfimov and V.~Anosov and A.~Antoshkin and K.~Augsten and W.~Augustyniak and A.~Austregesilo and C.D.R.~Azevedo and B.~Badelek and F.~Balestra and M.~Ball and J.~Barth and R.~Beck and Y.~Bedfer and J.~Bernhard and K.~Bicker and E.~R.~Bielert and R.~Birsa and M.~Bodlak and P.~Bordalo and F.~Bradamante and C.~Braun and A.~Bressan and M.~Buechele and W.-C.~Chang and C.~Chatterjee and M.~Chiosso and I.~Choi and S.-U.~Chung and A.~Cicuttin and M.L.~Crespo and Q.~Curiel and S.~Dalla Torre and S.S.~Dasgupta and S.~Dasgupta and O.Yu.~Denisov and L.~Dhara and S.V.~Donskov and N.~Doshita and Ch.~Dreisbach and V.~Duic and W.~Duennweber and M.~Dziewiecki and A.~Efremov and P.D.~Eversheim and W.~Eyrich and M.~Faessler and A.~Ferrero and M.~Finger and M.~Finger jr.~and H.~Fischer and C.~Franco and N.~du Fresne von Hohenesche and J.M.~Friedrich and V.~Frolov and E.~Fuchey and F.~Gautheron and O.P.~Gavrichtchouk and S.~Gerassimov and J.~Giarra and F.~Giordano and I.~Gnesi and M.~Gorzellik and S.~Grabmueller and A.~Grasso and M.~Grosse Perdekamp and B.~Grube and T.~Grussenmeyer and A.~Guskov and F.~Haas and D.~Hahne and G.~Hamar and D.~von Harrach and F.H.~Heinsius and R.~Heitz and F.~Herrmann and N.~Horikawa and N.~d'Hose and C.-Y.~Hsieh and S.~Huber and S.~Ishimoto and A.~Ivanov and Yu.~Ivanshin and T.~Iwata and V.~Jary and R.~Joosten and P.~Joerg and E.~Kabuss and A.~Kerbizi and B.~Ketzer and G.V.~Khaustov and Yu.A.~Khokhlov and Yu.~Kisselev and F.~Klein and K.~Klimaszewski and J.H.~Koivuniemi and V.N.~Kolosov and K.~Kondo and K.~Koenigsmann and I.~Konorov and V.F.~Konstantinov and A.M.~Kotzinian and O.M.~Kouznetsov and M.~Kraemer and P.~Kremser and F.~Krinner and Z.V.~Kroumchtein and Y.~Kulinich and F.~Kunne and K.~Kurek and R.P.~Kurjata and A.A.~Lednev and A.~Lehmann and M.~Levillain and S.~Levorato and Y.-S.~Lian and J.~Lichtenstadt and R.~Longo and A.~Maggiora and A.~Magnon and N.~Makins and N.~Makke and G.K.~Mallot and B.~Marianski and A.~Martin and J.~Marzec and J.~Matousek and H.~Matsuda and T.~Matsuda and G.V.~Meshcheryakov and M.~Meyer and W.~Meyer and Yu.V.~Mikhailov and M.~Mikhasenko and E.~Mitrofanov and N.~Mitrofanov and Y.~Miyachi and A.~Nagaytsev and F.~Nerling and D.~Neyret and J.~Novy and W.-D.~Nowak and G.~Nukazuka and A.S.~Nunes and A.G.~Olshevsky and I.~Orlov and M.~Ostrick and D.~Panzieri and B.~Parsamyan and S.~Paul and J.-C.~Peng and F.~Pereira and M.~Pesek and D.V.~Peshekhonov and N.~Pierre and S.~Platchkov and J.~Pochodzalla and V.A.~Polyakov and J.~Pretz and M.~Quaresma and C.~Quintans and S.~Ramos and C.~Regali and G.~Reicherz and C.~Riedl and N.S.~Rogacheva and M.~Roskot and D.I.~Ryabchikov and A.~Rybnikov and A.~Rychter and R.~Salac and V.D.~Samoylenko and A.~Sandacz and C.~Santos and S.~Sarkar and I.A.~Savin and T.~Sawada and G.~Sbrizzai and P.~Schiavon and K.~Schmidt and H.~Schmieden and K.~Schoenning and E.~Seder and A.~Selyunin and L.~Silva and L.~Sinha and S.~Sirtl and M.~Slunecka and J.~Smolik and A.~Srnka and D.~Steffen and M.~Stolarski and O.~Subrt and M.~Sulc and H.~Suzuki and A.~Szabelski and T.~Szameitat and P.~Sznajder and S.~Takekawa and M.~Tasevsky and S.~Tessaro and F.~Tessarotto and F.~Thibaud and A.~Thiel and F.~Tosello and V.~Tskhay and S.~Uhl and J.~Veloso and M.~Virius and J.~Vondra and S.~Wallner and T.~Weisrock and M.~Wilfert and J.~ter Wolbeek and K.~Zaremba and P.~Zavada and M.~Zavertyaev and E.~Zemlyanichkina and N.~Zhuravlev and M.~Ziembicki and A.~Zink}, title = {{F}irst measurement of the {S}ivers asymmetry for gluons from {SIDIS} data}, year = {2017}, eprint = {1701.02453}, note = {arXiv:1701.02453v1} }
PDF
The Sivers function describes the correlation between the transverse spin of a nucleon and the transverse motion of its partons. It was extracted from measurements of the azimuthal asymmetry of hadrons produced in semi-inclusive deep inelastic scattering of leptons off transversely polarised nucleon targets, and it turned out to be non-zero for quarks. In this letter the evaluation of the Sivers asymmetry for gluons in the same process is presented. The analysis method is based on a Monte Carlo simulation that includes three hard processes: photon-gluon fusion, QCD Compton scattering and leading-order virtual-photon absorption process. The Sivers asymmetries of the three processes are simultaneously extracted using the LEPTO event generator and a neural network approach. The method is applied to samples of events containing at least two hadrons with large transverse momentum from the COMPASS data taken with a 160 GeV/$c$ muon beam scattered off transversely polarised deuterons and protons. With a significance of more than two standard deviations a negative value is obtained for the gluon Sivers asymmetry. The result of a similar analysis for a Collins-like asymmetry for gluons is consistent with zero.
Sivers asymmetry extracted in SIDIS at the hard scale of the Drell-Yan process at COMPASS
C. Adolph, M. Aghasyan, R. Akhunzyanov, M.G. Alexeev, G.D. Alexeev, A. Amoroso, V. Andrieux, N.V. Anfimov, V. Anosov, K. Augsten, W. Augustyniak, A. Austregesilo, C.D.R. Azevedo, B. Badelek, F. Balestra, M. Ball, J. Barth, R. Beck, Y. Bedfer, J. Bernhard, et al (207)
Sep 26 2016 hep-ex hep-ph arXiv:1609.07374v2

@misc{1609.07374, author = {C.~Adolph and M.~Aghasyan and R.~Akhunzyanov and M.G.~Alexeev and G.D.~Alexeev and A.~Amoroso and V.~Andrieux and N.V.~Anfimov and V.~Anosov and K.~Augsten and W.~Augustyniak and A.~Austregesilo and C.D.R.~Azevedo and B.~Badelek and F.~Balestra and M.~Ball and J.~Barth and R.~Beck and Y.~Bedfer and J.~Bernhard and K.~Bicker and E.~R.~Bielert and R.~Birsa and M.~Bodlak and P.~Bordalo and F.~Bradamante and C.~Braun and A.~Bressan and M.~Buechele and W.-C.~Chang and C.~Chatterjee and M.~Chiosso and I.~Choi and S.-U.~Chung and A.~Cicuttin and M.L.~Crespo and Q.~Curiel and S.~Dalla Torre and S.S.~Dasgupta and S.~Dasgupta and O.Yu.~Denisov and L.~Dhara and S.V.~Donskov and N.~Doshita and Ch.~Dreisbach and V.~Duic and W.~Duennweber and M.~Dziewiecki and A.~Efremov and C.~Elia and P.D.~Eversheim and W.~Eyrich and M.~Faessler and A.~Ferrero and M.~Finger and M.~Finger jr.~and H.~Fischer and C.~Franco and N.~du Fresne von Hohenesche and J.M.~Friedrich and V.~Frolov and E.~Fuchey and F.~Gautheron and O.P.~Gavrichtchouk and S.~Gerassimov and J.~Giarra and F.~Giordano and I.~Gnesi and M.~Gorzellik and S.~Grabmueller and A.~Grasso and M.~Grosse Perdekamp and B.~Grube and T.~Grussenmeyer and A.~Guskov and F.~Haas and D.~Hahne and G.~Hamar and D.~von Harrach and F.H.~Heinsius and R.~Heitz and F.~Herrmann and N.~Horikawa and N.~d'Hose and C.-Y.~Hsieh and S.~Huber and S.~Ishimoto and A.~Ivanov and Yu.~Ivanshin and T.~Iwata and V.~Jary and R.~Joosten and P.~Joerg and E.~Kabuss and B.~Ketzer and G.V.~Khaustov and Yu.A.~Khokhlov and Yu.~Kisselev and F.~Klein and K.~Klimaszewski and J.H.~Koivuniemi and V.N.~Kolosov and K.~Kondo and K.~Koenigsmann and I.~Konorov and V.F.~Konstantinov and A.M.~Kotzinian and O.M.~Kouznetsov and M.~Kraemer and P.~Kremser and F.~Krinner and Z.V.~Kroumchtein and Y.~Kulinich and F.~Kunne and K.~Kurek and R.P.~Kurjata and A.A.~Lednev and A.~Lehmann and M.~Levillain and S.~Levorato and Y.-S.~Lian and J.~Lichtenstadt and R.~Longo and A.~Maggiora and A.~Magnon and N.~Makins and N.~Makke and G.K.~Mallot and B.~Marianski and A.~Martin and J.~Marzec and J.~Matousek and H.~Matsuda and T.~Matsuda and G.V.~Meshcheryakov and M.~Meyer and W.~Meyer and Yu.V.~Mikhailov and M.~Mikhasenko and E.~Mitrofanov and N.~Mitrofanov and Y.~Miyachi and A.~Nagaytsev and F.~Nerling and D.~Neyret and J.~Novy and W.-D.~Nowak and G.~Nukazuka and A.S.~Nunes and A.G.~Olshevsky and I.~Orlov and M.~Ostrick and D.~Panzieri and B.~Parsamyan and S.~Paul and J.-C.~Peng and F.~Pereira and M.~Pesek and D.V.~Peshekhonov and N.~Pierre and S.~Platchkov and J.~Pochodzalla and V.A.~Polyakov and J.~Pretz and M.~Quaresma and C.~Quintans and S.~Ramos and C.~Regali and G.~Reicherz and C.~Riedl and M.~Roskot and N.S.~Rossiyskaya and D.I.~Ryabchikov and A.~Rybnikov and A.~Rychter and R.~Salac and V.D.~Samoylenko and A.~Sandacz and C.~Santos and S.~Sarkar and I.A.~Savin and T.~Sawada and G.~Sbrizzai and P.~Schiavon and K.~Schmidt and H.~Schmieden and K.~Schoenning and E.~Seder and A.~Selyunin and L.~Silva and L.~Sinha and S.~Sirtl and M.~Slunecka and J.~Smolik and F.~Sozzi and A.~Srnka and D.~Steffen and M.~Stolarski and O.~Subrt and M.~Sulc and H.~Suzuki and A.~Szabelski and T.~Szameitat and P.~Sznajder and S.~Takekawa and M.~Tasevsky and S.~Tessaro and F.~Tessarotto and F.~Thibaud and A.~Thiel and F.~Tosello and V.~Tskhay and S.~Uhl and J.~Veloso and M.~Virius and J.~Vondra and S.~Wallner and T.~Weisrock and M.~Wilfert and J.~ter Wolbeek and K.~Zaremba and P.~Zavada and M.~Zavertyaev and E.~Zemlyanichkina and N.~Zhuravlev and M.~Ziembicki and A.~Zink}, title = {{S}ivers asymmetry extracted in {SIDIS} at the hard scale of the {D}rell-{Y}an process at {COMPASS}}, year = {2016}, eprint = {1609.07374}, doi = {10.1016/j.physletb.2017.04.042}, note = {arXiv:1609.07374v2} }
PDF
Proton transverse-spin azimuthal asymmetries are extracted from the COMPASS 2010 semi-inclusive hadron measurements in deep inelastic muon-nucleon scattering in those four regions of the photon virtuality $Q^2$, which correspond to the four regions of the di-muon mass $\sqrt{Q^2}$ used in the ongoing analysis of the COMPASS Drell-Yan measurements. This allows for a future direct comparison of the nucleon transverse-momentum-dependent parton distribution functions extracted from these two alternative measurements. Various two-dimensional kinematic dependences are presented for the azimuthal asymmetries induced by the Sivers transverse-momentum-dependent parton distribution function. The integrated Sivers asymmetries are found to be positive with an accuracy that appears to be sufficient to test the sign change of the Sivers function predicted by Quantum Chromodynamics.
Azimuthal asymmetries of charged hadrons produced in high-energy muon scattering off longitudinally polarised deuterons
C. Adolph, M. Aghasyan, R. Akhunzyanov, M.G. Alexeev, G.D. Alexeev, A. Amoroso, V. Andrieux, N.V. Anfimov, V. Anosov, K. Augsten, W. Augustyniak, A. Austregesilo, C.D.R. Azevedo, B. Badelek, F. Balestra, M. Ball, J. Barth, R. Beck, Y. Bedfer, J. Bernhard, et al (205)
Sep 21 2016 hep-ex hep-ph arXiv:1609.06062v2

@misc{1609.06062, author = {C.~Adolph and M.~Aghasyan and R.~Akhunzyanov and M.G.~Alexeev and G.D.~Alexeev and A.~Amoroso and V.~Andrieux and N.V.~Anfimov and V.~Anosov and K.~Augsten and W.~Augustyniak and A.~Austregesilo and C.D.R.~Azevedo and B.~Badelek and F.~Balestra and M.~Ball and J.~Barth and R.~Beck and Y.~Bedfer and J.~Bernhard and K.~Bicker and E.~R.~Bielert and R.~Birsa and M.~Bodlak and P.~Bordalo and F.~Bradamante and C.~Braun and A.~Bressan and M.~Buechele and W.-C.~Chang and C.~Chatterjee and M.~Chiosso and I.~Choi and S.-U.~Chung and A.~Cicuttin and M.L.~Crespo and Q.~Curiel and S.~Dalla Torre and S.S.~Dasgupta and S.~Dasgupta and O.Yu.~Denisov and L.~Dhara and S.V.~Donskov and N.~Doshita and Ch.~Dreisbach and V.~Duic and W.~Duennweber and M.~Dziewiecki and A.~Efremov and P.D.~Eversheim and W.~Eyrich and M.~Faessler and A.~Ferrero and M.~Finger and M.~Finger jr.~and H.~Fischer and C.~Franco and N.~du Fresne von Hohenesche and J.M.~Friedrich and V.~Frolov and E.~Fuchey and F.~Gautheron and O.P.~Gavrichtchouk and S.~Gerassimov and J.~Giarra and F.~Giordano and I.~Gnesi and M.~Gorzellik and S.~Grabmueller and A.~Grasso and M.~Grosse Perdekamp and B.~Grube and T.~Grussenmeyer and A.~Guskov and F.~Haas and D.~Hahne and G.~Hamar and D.~von Harrach and F.H.~Heinsius and R.~Heitz and F.~Herrmann and N.~Horikawa and N.~d'Hose and C.-Y.~Hsieh and S.~Huber and S.~Ishimoto and A.~Ivanov and Yu.~Ivanshin and T.~Iwata and V.~Jary and R.~Joosten and P.~Joerg and E.~Kabuss and B.~Ketzer and G.V.~Khaustov and Yu.A.~Khokhlov and Yu.~Kisselev and F.~Klein and K.~Klimaszewski and J.H.~Koivuniemi and V.N.~Kolosov and K.~Kondo and K.~Koenigsmann and I.~Konorov and V.F.~Konstantinov and A.M.~Kotzinian and O.M.~Kouznetsov and M.~Kraemer and P.~Kremser and F.~Krinner and Z.V.~Kroumchtein and Y.~Kulinich and F.~Kunne and K.~Kurek and R.P.~Kurjata and A.A.~Lednev and A.~Lehmann and M.~Levillain and S.~Levorato and Y.-S.~Lian and J.~Lichtenstadt and R.~Longo and A.~Maggiora and A.~Magnon and N.~Makins and N.~Makke and G.K.~Mallot and B.~Marianski and A.~Martin and J.~Marzec and J.~Matousek and H.~Matsuda and T.~Matsuda and G.V.~Meshcheryakov and M.~Meyer and W.~Meyer and Yu.V.~Mikhailov and M.~Mikhasenko and E.~Mitrofanov and N.~Mitrofanov and Y.~Miyachi and A.~Nagaytsev and F.~Nerling and D.~Neyret and J.~Novy and W.-D.~Nowak and G.~Nukazuka and A.S.~Nunes and A.G.~Olshevsky and I.~Orlov and M.~Ostrick and D.~Panzieri and B.~Parsamyan and S.~Paul and J.-C.~Peng and F.~Pereira and M.~Pesek and D.V.~Peshekhonov and N.~Pierre and S.~Platchkov and J.~Pochodzalla and V.A.~Polyakov and J.~Pretz and M.~Quaresma and C.~Quintans and S.~Ramos and C.~Regali and G.~Reicherz and C.~Riedl and M.~Roskot and N.S.~Rossiyskaya and D.I.~Ryabchikov and A.~Rybnikov and A.~Rychter and R.~Salac and V.D.~Samoylenko and A.~Sandacz and C.~Santos and S.~Sarkar and I.A.~Savin and T.~Sawada and G.~Sbrizzai and P.~Schiavon and K.~Schmidt and H.~Schmieden and K.~Schoenning and E.~Seder and A.~Selyunin and L.~Silva and L.~Sinha and S.~Sirtl and M.~Slunecka and J.~Smolik and A.~Srnka and D.~Steffen and M.~Stolarski and O.~Subrt and M.~Sulc and H.~Suzuki and A.~Szabelski and T.~Szameitat and P.~Sznajder and S.~Takekawa and M.~Tasevsky and S.~Tessaro and F.~Tessarotto and F.~Thibaud and A.~Thiel and F.~Tosello and V.~Tskhay and S.~Uhl and J.~Veloso and M.~Virius and J.~Vondra and S.~Wallner and T.~Weisrock and M.~Wilfert and J.~ter Wolbeek and K.~Zaremba and P.~Zavada and M.~Zavertyaev and E.~Zemlyanichkina and N.~Zhuravlev and M.~Ziembicki and A.~Zink}, title = {{A}zimuthal asymmetries of charged hadrons produced in high-energy muon scattering off longitudinally polarised deuterons}, year = {2016}, eprint = {1609.06062}, note = {arXiv:1609.06062v2} }
PDF
Single hadron azimuthal asymmetries of positive and negative hadrons produced in muon semi-inclusive deep inelastic scattering off longitudinally polarised deuterons are determined using the 2006 COMPASS data and also combined all deuteron COMPASS data. For each hadron charge, the dependence of the azimuthal asymmetry on the hadron azimuthal angle $\phi$ is obtained by means of a five-parameter fitting function that besides a $\phi$-independent term includes four modulations predicted by theory: $\sin\phi$, $\sin 2 \phi$, $\sin 3\phi$ and $\cos\phi$. The amplitudes of the five terms have been extracted, first, for the hadrons in the whole available kinematic region. In further fits, performed for hadrons from a restricted kinematic region, the $\phi$-dependence is determined as a function of one of three variables (Bjorken-$x$, fractional energy of virtual photon taken by the outgoing hadron and hadron transverse momentum), while disregarding the others. Except the $\phi$-independent term, all the modulation amplitudes are very small, and no clear kinematic dependence could be observed within experimental uncertainties.
Einstein-Cartan Gravity with Torsion Field Serving as Origin for Cosmological Constant or Dark Energy Density
A. N. Ivanov, M. Wellenzohn
Jul 06 2016 gr-qc astro-ph.CO hep-ph arXiv:1607.01128v2

@misc{1607.01128, author = {A.~N.~Ivanov and M.~Wellenzohn}, title = {{E}instein-{C}artan {G}ravity with {T}orsion {F}ield {S}erving as {O}rigin for {C}osmological {C}onstant or {D}ark {E}nergy {D}ensity}, year = {2016}, eprint = {1607.01128}, doi = {10.3847/0004-637X/829/1/47}, note = {arXiv:1607.01128v2} }
PDF
We analyse the Einstein-Cartan gravity in its standard form cal-R = R + cal-K^2, where cal-R and R are the Ricci scalar curvatures in the Einstein-Cartan and Einstein gravity, respectively, and cal-K^2 is the quadratic contribution of torsion in terms of the contorsion tensor cal-K. We treat torsion as an external (or a background) field and show that the contribution of torsion to the Einstein equations can be interpreted in terms of the torsion energy-momentum tensor, local conservation of which in a curved spacetime with an arbitrary metric or an arbitrary gravitational field demands a proportionality of the torsion energy--momentum tensor to a metric tensor, a covariant derivative of which vanishes because of the metricity condition. This allows to claim that torsion can serve as origin for vacuum energy density, given by cosmological constant or dark energy density in the Universe. This is a model-independent result may explain a small value of cosmological constant, which is a long--standing problem of cosmology. We show that the obtained result is valid also in the Poincare' gauge gravitational theory by Kibble (T. W. B. Kibble, J. Math. Phys. 2, 212 (1961)), where the Einstein-Hilbert action can be represented in the same form cal-R = R + cal-K^2.
Can Chameleon Field be identified with Quintessence ?
A. N. Ivanov, M. Wellenzohn
Jul 05 2016 gr-qc astro-ph.CO hep-ph arXiv:1607.00884v2

@misc{1607.00884, author = {A.~N.~Ivanov and M.~Wellenzohn}, title = {{C}an {C}hameleon {F}ield be identified with {Q}uintessence ?}, year = {2016}, eprint = {1607.00884}, note = {arXiv:1607.00884v2} }
PDF
In the Einstein-Cartan gravitational theory with the chameleon field, changing its mass in dependence of a density of its environment, we analyze the Friedmann-Einstein equations for the Universe evolution with the expansion parameter $a$ dependent on time only. We analyze the problem of an identification of the chameleon field with quintessence, i.e. a canonical scalar field responsible for dark energy dynamics and for the acceleration of the Universe expansion. We show that since the cosmological constant, related to the relic dark energy density, is induced by torsion (Astrophys. J.829, 47 (2016)), the chameleon field may, in principle, possess some properties of quintessence such as an influence on the dark energy dynamics and the acceleration of the Universe expansion even on the late-time acceleration, but it cannot be identified with quintessence to full extent.
Leading-order determination of the gluon polarisation from semi-inclusive deep inelastic scattering data
C. Adolph, M. Aghasyan, R. Akhunzyanov, M.G. Alexeev, G.D. Alexeev, A. Amoroso, V. Andrieux, N.V. Anfimov, V. Anosov, W. Augustyniak, A. Austregesilo, C.D.R. Azevedo, B. Badelek, F. Balestra, J. Barth, R. Beck, Y. Bedfer, J. Bernhard, K. Bicker, E. R. Bielert, et al (201)
Dec 17 2015 hep-ex hep-ph arXiv:1512.05053v2

@misc{1512.05053, author = {C.~Adolph and M.~Aghasyan and R.~Akhunzyanov and M.G.~Alexeev and G.D.~Alexeev and A.~Amoroso and V.~Andrieux and N.V.~Anfimov and V.~Anosov and W.~Augustyniak and A.~Austregesilo and C.D.R.~Azevedo and B.~Badelek and F.~Balestra and J.~Barth and R.~Beck and Y.~Bedfer and J.~Bernhard and K.~Bicker and E.~R.~Bielert and R.~Birsa and J.~Bisplinghoff and M.~Bodlak and M.~Boer and P.~Bordalo and F.~Bradamante and C.~Braun and A.~Bressan and M.~Buechele and W.-C.~Chang and M.~Chiosso and I.~Choi and S.-U.~Chung and A.~Cicuttin and M.L.~Crespo and Q.~Curiel and S.~Dalla Torre and S.S.~Dasgupta and S.~Dasgupta and O.Yu.~Denisov and L.~Dhara and S.V.~Donskov and N.~Doshita and V.~Duic and W.~Duennweber and M.~Dziewiecki and A.~Efremov and P.D.~Eversheim and W.~Eyrich and M.~Faessler and A.~Ferrero and M.~Finger and M.~Finger jr.~and H.~Fischer and C.~Franco and N.~du Fresne von Hohenesche and J.M.~Friedrich and V.~Frolov and E.~Fuchey and F.~Gautheron and O.P.~Gavrichtchouk and S.~Gerassimov and F.~Giordano and I.~Gnesi and M.~Gorzellik and S.~Grabmueller and A.~Grasso and M.~Grosse Perdekamp and B.~Grube and T.~Grussenmeyer and A.~Guskov and F.~Haas and D.~Hahne and D.~von Harrach and R.~Hashimoto and F.H.~Heinsius and R.~Heitz and F.~Herrmann and F.~Hinterberger and N.~Horikawa and N.~d'Hose and C.-Y.~Hsieh and S.~Huber and S.~Ishimoto and A.~Ivanov and Yu.~Ivanshin and T.~Iwata and R.~Jahn and V.~Jary and R.~Joosten and P.~Joerg and E.~Kabuss and B.~Ketzer and G.V.~Khaustov and Yu.A.~Khokhlov and Yu.~Kisselev and F.~Klein and K.~Klimaszewski and J.H.~Koivuniemi and V.N.~Kolosov and K.~Kondo and K.~Koenigsmann and I.~Konorov and V.F.~Konstantinov and A.M.~Kotzinian and O.M.~Kouznetsov and M.~Kraemer and P.~Kremser and F.~Krinner and Z.V.~Kroumchtein and Y.~Kulinich and F.~Kunne and K.~Kurek and R.P.~Kurjata and A.A.~Lednev and A.~Lehmann and M.~Levillain and S.~Levorato and J.~Lichtenstadt and R.~Longo and A.~Maggiora and A.~Magnon and N.~Makins and N.~Makke and G.K.~Mallot and C.~Marchand and B.~Marianski and A.~Martin and J.~Marzec and J.~Matousek and H.~Matsuda and T.~Matsuda and G.V.~Meshcheryakov and W.~Meyer and T.~Michigami and Yu.V.~Mikhailov and M.~Mikhasenko and Y.~Miyachi and P.~Montuenga and A.~Nagaytsev and F.~Nerling and D.~Neyret and V.I.~Nikolaenko and J.~Novy and W.-D.~Nowak and G.~Nukazuka and A.S.~Nunes and A.G.~Olshevsky and I.~Orlov and M.~Ostrick and D.~Panzieri and B.~Parsamyan and S.~Paul and J.-C.~Peng and F.~Pereira and M.~Pesek and D.V.~Peshekhonov and S.~Platchkov and J.~Pochodzalla and V.A.~Polyakov and J.~Pretz and M.~Quaresma and C.~Quintans and S.~Ramos and C.~Regali and G.~Reicherz and C.~Riedl and M.~Roskot and N.S.~Rossiyskaya and D.I.~Ryabchikov and A.~Rybnikov and A.~Rychter and R.~Salac and V.D.~Samoylenko and A.~Sandacz and C.~Santos and S.~Sarkar and I.A.~Savin and T.~Sawada and G.~Sbrizzai and P.~Schiavon and K.~Schmidt and H.~Schmieden and K.~Schoenning and S.~Schopferer and E.~Seder and A.~Selyunin and O.Yu.~Shevchenko and L.~Silva and L.~Sinha and S.~Sirtl and M.~Slunecka and J.~Smolik and F.~Sozzi and A.~Srnka and M.~Stolarski and M.~Sulc and H.~Suzuki and A.~Szabelski and T.~Szameitat and P.~Sznajder and S.~Takekawa and M.~Tasevsky and S.~Tessaro and F.~Tessarotto and F.~Thibaud and F.~Tosello and V.~Tskhay and S.~Uhl and J.~Veloso and M.~Virius and J.~Vondra and T.~Weisrock and M.~Wilfert and J.~ter Wolbeek and K.~Zaremba and P.~Zavada and M.~Zavertyaev and E.~Zemlyanichkina and M.~Ziembicki and A.~Zink}, title = {{L}eading-order determination of the gluon polarisation from semi-inclusive deep inelastic scattering data}, year = {2015}, eprint = {1512.05053}, note = {arXiv:1512.05053v2} }
PDF
Using a novel analysis technique, the gluon polarisation in the nucleon is re-evaluated using the longitudinal double-spin asymmetry measured in the cross section of semi-inclusive single-hadron muoproduction with photon virtuality $Q^2>1~({\rm GeV}/c)^2$. The data were obtained by the COMPASS experiment at CERN using a 160 GeV/$c$ polarised muon beam impinging on a polarised $^6$LiD target. By analysing the full range in hadron transverse momentum $p_{\rm T}$, the different $p_{\rm T}$-dependences of the underlying processes are separated using a neural-network approach. In the absence of pQCD calculations at next-to-leading order in the selected kinematic domain, the gluon polarisation $\Delta g/g$ is evaluated at leading order in pQCD at a hard scale of $\mu^2= \langle Q^2 \rangle = 3 ({\rm GeV}/c)^2$. It is determined in three intervals of the nucleon momentum fraction carried by gluons, $x_{\rm g}$, covering the range $0.04 \!<\! x_{ \rm g}\! <\! 0.28$~ and does not exhibit a significant dependence on $x_{\rm g}$. The average over the three intervals, $\langle \Delta g/g \rangle = 0.113 \pm 0.038_{\rm (stat.)}\pm 0.036_{\rm (syst.)}$ at $\langle x_{\rm g} \rangle \approx 0.10$, suggests that the gluon polarisation is positive in the measured $x_{\rm g}$ range.
Effective Low-Energy Potential for Slow Dirac Fermions in Einstein-Cartan Gravity with Torsion and Chameleon
A. N. Ivanov, M. Wellenzohn
Nov 30 2015 gr-qc hep-ph arXiv:1511.08740v1

@misc{1511.08740, author = {A.~N.~Ivanov and M.~Wellenzohn}, title = {{E}ffective {L}ow-{E}nergy {P}otential for {S}low {D}irac {F}ermions in {E}instein-{C}artan {G}ravity with {T}orsion and {C}hameleon}, year = {2015}, eprint = {1511.08740}, note = {arXiv:1511.08740v1} }
PDF
We derive the most general effective low-energy potential to order O(1/m) for slow Dirac fermions with mass m, coupled to gravitational, chameleon and torsion fields in the Einstein-Cartan gravity. The obtained results can be applied to the experimental analysis of gravitational, chameleon and torsion interactions in terrestrial laboratories. We discuss the use of rotating coordinate systems, caused by rotations of devices, for measurements of the torsion vector and tensor components, caused by minimal torsion--fermion couplings (Ivanov and Wellenzohn, Phys. Rev. D92, 065006 (2015)). Using the most general form of a metric tensor of curved spacetimes in rotating coordinate systems, proposed by Obukhov, Silenko, and Teryaev (Phys. Rev. D84, 024025 (2011)), we extend this metric by the inclusion of the chameleon field and calculate the set of vierbein fields, in terms of which Dirac fermions couple to torsion vector and tensor components through minimal torsion-fermion couplings. For such a set of vierbein fields we discuss a part of the effective low-energy potential for slow Dirac fermions, coupled to gravitational, chameleon and torsion fields to order O(1) in the large fermion mass expansion.
Gravity Resonance Spectroscopy and Einstein-Cartan Gravity
Hartmut Abele, Andrei Ivanov, Tobias Jenke, Mario Pitschmann, Peter Geltenbort
Oct 13 2015 gr-qc hep-ph arXiv:1510.03063v1

@misc{1510.03063, author = {Hartmut Abele and Andrei Ivanov and Tobias Jenke and Mario Pitschmann and Peter Geltenbort}, title = {{G}ravity {R}esonance {S}pectroscopy and {E}instein-{C}artan {G}ravity}, year = {2015}, eprint = {1510.03063}, note = {arXiv:1510.03063v1} }
PDF
The qBounce experiment offers a new way of looking at gravitation based on quantum interference. An ultracold neutron is reflected in well-defined quantum states in the gravity potential of the Earth by a mirror, which allows to apply the concept of gravity resonance spectroscopy (GRS). This experiment with neutrons gives access to all gravity parameters as the dependences on distance, mass, curvature, energy-momentum as well as on torsion. Here, we concentrate on torsion.
Non-Relativistic Approximation of Dirac Equation for Slow Fermions Coupled to the Chameleon and Torsion Fields in the Gravitational Field of the Earth
A. N. Ivanov, M. Wellenzohn
Sep 15 2015 gr-qc astro-ph.IM hep-ph nucl-ex quant-ph arXiv:1509.04014v1

@misc{1509.04014, author = {A.~N.~Ivanov and M.~Wellenzohn}, title = {{N}on-{R}elativistic {A}pproximation of {D}irac {E}quation for {S}low {F}ermions {C}oupled to the {C}hameleon and {T}orsion {F}ields in the {G}ravitational {F}ield of the {E}arth}, year = {2015}, eprint = {1509.04014}, howpublished = {Phys. Rev. D92, 065006 (2015)}, doi = {10.1103/PhysRevD.92.065006}, note = {arXiv:1509.04014v1} }
PDF
We analyse a non-relativistic approximation of the Dirac equation for slow fermions, coupled to the chameleon field and torsion in the spacetime with the Schwarzschild metric, taken in the weak gravitational field of the Earth approximation. We follow the analysis of the Dirac equation in the curved spacetime with torsion, proposed by Kostelecky (Phys. Rev. D69, 105009 (2004)), and apply the Foldy--Wouthuysen transformations. We derive the effective low-energy gravitational potentials for slow fermions, coupled to the gravitational field of the Earth, the chameleon field and to torsion with minimal and non-minimal couplings.
Longitudinal double spin asymmetries in single hadron quasi-real photoproduction at high $p_T$
COMPASS Collaboration, C. Adolph, R. Akhunzyanov, M.G. Alexeev, G.D. Alexeev, A. Amoroso, V. Andrieux, V. Anosov, W. Augustyniak, A. Austregesilo, C.D.R. Azevedo, B. Badełek, F. Balestra, J. Barth, R. Beck, Y. Bedfer, J. Bernhard, K. Bicker, E.R. Bielert, R. Birsa, et al (191)
Sep 14 2015 hep-ex hep-ph arXiv:1509.03526v2

@misc{1509.03526, author = {COMPASS Collaboration and C.~Adolph and R.~Akhunzyanov and M.G.~Alexeev and G.D.~Alexeev and A.~Amoroso and V.~Andrieux and V.~Anosov and W.~Augustyniak and A.~Austregesilo and C.D.R.~Azevedo and B.~Badełek and F.~Balestra and J.~Barth and R.~Beck and Y.~Bedfer and J.~Bernhard and K.~Bicker and E.R.~Bielert and R.~Birsa and J.~Bisplinghoff and M.~Bodlak and M.~Boer and P.~Bordalo and F.~Bradamante and C.~Braun and A.~Bressan and M.~Büchele and E.~Burtin and W.-C.~Chang and M.~Chiosso and I.~Choi and S.-U.~Chung and A.~Cicuttin and M.L.~Crespo and Q.~Curiel and S.~Dalla Torre and S.S.~Dasgupta and S.~Dasgupta and O.Yu.~Denisov and L.~Dhara and S.V.~Donskov and N.~Doshita and V.~Duic and W.~Dünnweber and M.~Dziewiecki and A.~Efremov and P.D.~Eversheim and W.~Eyrich and M.~Faessler and A.~Ferrero and M.~Finger and M.~Finger jr.~and H.~Fischer and C.~Franco and N.~du Fresne von Hohenesche and J.M.~Friedrich and V.~Frolov and E.~Fuchey and F.~Gautheron and O.P.~Gavrichtchouk and S.~Gerassimov and F.~Giordano and I.~Gnesi and M.~Gorzellik and S.~Grabmüller and A.~Grasso and M.~Grosse Perdekamp and B.~Grube and T.~Grussenmeyer and A.~Guskov and F.~Haas and D.~Hahne and D.~von Harrach and R.~Hashimoto and F.H.~Heinsius and F.~Herrmann and F.~Hinterberger and N.~Horikawa and N.~d'Hose and C.-Y.~Hsieh and S.~Huber and S.~Ishimoto and A.~Ivanov and Yu.~Ivanshin and T.~Iwata and R.~Jahn and V.~Jary and R.~Joosten and P.~Jörg and E.~Kabuß and B.~Ketzer and G.V.~Khaustov and Yu.A.~Khokhlov and Yu.~Kisselev and F.~Klein and K.~Klimaszewski and J.H.~Koivuniemi and V.N.~Kolosov and K.~Kondo and K.~Königsmann and I.~Konorov and V.F.~Konstantinov and A.M.~Kotzinian and O.~Kouznetsov and M.~Krämer and P.~Kremser and F.~Krinner and Z.V.~Kroumchtein and N.~Kuchinski and R.~Kuhn and F.~Kunne and K.~Kurek and R.P.~Kurjata and A.A.~Lednev and A.~Lehmann and M.~Levillain and S.~Levorato and J.~Lichtenstadt and R.~Longo and A.~Maggiora and A.~Magnon and N.~Makins and N.~Makke and G.K.~Mallot and C.~Marchand and B.~Marianski and A.~Martin and J.~Marzec and J.~Matoušek and H.~Matsuda and T.~Matsuda and G.~Meshcheryakov and W.~Meyer and T.~Michigami and Yu.V.~Mikhailov and Y.~Miyachi and P.~Montuenga and A.~Nagaytsev and F.~Nerling and D.~Neyret and V.I.~Nikolaenko and J.~Nový and W.-D.~Nowak and G.~Nukazuka and A.S.~Nunes and A.G.~Olshevsky and I.~Orlov and M.~Ostrick and D.~Panzieri and B.~Parsamyan and S.~Paul and J.-C.~Peng and F.~Pereira and M.~Pešek and D.V.~Peshekhonov and S.~Platchkov and J.~Pochodzalla and V.A.~Polyakov and J.~Pretz and M.~Quaresma and C.~Quintans and S.~Ramos and C.~Regali and G.~Reicherz and C.~Riedl and N.S.~Rossiyskaya and D.I.~Ryabchikov and A.~Rychter and V.D.~Samoylenko and A.~Sandacz and C.~Santos and S.~Sarkar and I.A.~Savin and G.~Sbrizzai and P.~Schiavon and K.~Schmidt and H.~Schmieden and K.~Schönning and S.~Schopferer and A.~Selyunin and O.Yu.~Shevchenko and L.~Silva and L.~Sinha and S.~Sirtl and M.~Slunecka and F.~Sozzi and A.~Srnka and M.~Stolarski and M.~Sulc and H.~Suzuki and A.~Szabelski and T.~Szameitat and P.~Sznajder and S.~Takekawa and S.~Tessaro and F.~Tessarotto and F.~Thibaud and F.~Tosello and V.~Tskhay and S.~Uhl and J.~Veloso and M.~Virius and T.~Weisrock and M.~Wilfert and J.~ter Wolbeek and K.~Zaremba and M.~Zavertyaev and E.~Zemlyanichkina and M.~Ziembicki and A.~Zink}, title = {{L}ongitudinal double spin asymmetries in single hadron quasi-real photoproduction at high $p_{T}$}, year = {2015}, eprint = {1509.03526}, note = {arXiv:1509.03526v2} }
PDF
We measured the longitudinal double spin asymmetries $A_{LL}$ for single hadron muo-production off protons and deuterons at photon virtuality $Q^2$ < 1(GeV/$\it c$)$^2$ for transverse hadron momenta $p_T$ in the range 0.7 GeV/$\it c$ to 4 GeV/$\it c$ . They were determined using COMPASS data taken with a polarised muon beam of 160 GeV/$\it c$ or 200 GeV/$\it c$ impinging on polarised $\mathrm{{}^6LiD}$ or $\mathrm{NH_3}$ targets. The experimental asymmetries are compared to next-to-leading order pQCD calculations, and are sensitive to the gluon polarisation $\Delta G$ inside the nucleon in the range of the nucleon momentum fraction carried by gluons $0.05 < x_g < 0.2$.
Resonance Production and $\pi\pi$ S-wave in $\pi^- + p \rightarrow \pi^- \pi^- \pi^+ + p_{recoil}$ at 190 GeV/c
C. Adolph, R. Akhunzyanov, M.G. Alexeev, G.D. Alexeev, A. Amoroso, V. Andrieux, V. Anosov, W. Augustyniak, A. Austregesilo, C.D.R. Azevedo, B. Badełek, F. Balestra, J. Barth, R. Beck, Y. Bedfer, J. Bernhard, K. Bicker, E.R. Bielert, R. Birsa, J. Bisplinghoff, et al (190)
Sep 04 2015 hep-ex hep-ph arXiv:1509.00992v2

@misc{1509.00992, author = {C.~Adolph and R.~Akhunzyanov and M.G.~Alexeev and G.D.~Alexeev and A.~Amoroso and V.~Andrieux and V.~Anosov and W.~Augustyniak and A.~Austregesilo and C.D.R.~Azevedo and B.~Badełek and F.~Balestra and J.~Barth and R.~Beck and Y.~Bedfer and J.~Bernhard and K.~Bicker and E.R.~Bielert and R.~Birsa and J.~Bisplinghoff and M.~Bodlak and M.~Boer and P.~Bordalo and F.~Bradamante and C.~Braun and A.~Bressan and M.~Büchele and E.~Burtin and W.-C.~Chang and M.~Chiosso and I.~Choi and S.U.~Chung and A.~Cicuttin and M.L.~Crespo and Q.~Curiel and S.~Dalla Torre and S.S.~Dasgupta and S.~Dasgupta and O.Yu.~Denisov and L.~Dhara and S.V.~Donskov and N.~Doshita and V.~Duic and W.~Dünnweber and M.~Dziewiecki and A.~Efremov and P.D.~Eversheim and W.~Eyrich and M.~Faessler and A.~Ferrero and M.~Finger and M.~Finger jr.~and H.~Fischer and C.~Franco and N.~du Fresne von Hohenesche and J.M.~Friedrich and V.~Frolov and E.~Fuchey and F.~Gautheron and O.P.~Gavrichtchouk and S.~Gerassimov and F.~Giordano and I.~Gnesi and M.~Gorzellik and S.~Grabmüller and A.~Grasso and M.~Grosse Perdekamp and B.~Grube and T.~Grussenmeyer and A.~Guskov and F.~Haas and D.~Hahne and D.~von Harrach and R.~Hashimoto and F.H.~Heinsius and F.~Herrmann and F.~Hinterberger and N.~Horikawa and N.~d'Hose and C.-Y.~Hsieh and S.~Huber and S.~Ishimoto and A.~Ivanov and Yu.~Ivanshin and T.~Iwata and R.~Jahn and V.~Jary and R.~Joosten and P.~Jörg and E.~Kabuß and B.~Ketzer and G.V.~Khaustov and Yu.A.~Khokhlov and Yu.~Kisselev and F.~Klein and K.~Klimaszewski and J.H.~Koivuniemi and V.N.~Kolosov and K.~Kondo and K.~Königsmann and I.~Konorov and V.F.~Konstantinov and A.M.~Kotzinian and O.~Kouznetsov and M.~Krämer and P.~Kremser and F.~Krinner and Z.V.~Kroumchtein and N.~Kuchinski and F.~Kunne and K.~Kurek and R.P.~Kurjata and A.A.~Lednev and A.~Lehmann and M.~Levillain and S.~Levorato and J.~Lichtenstadt and R.~Longo and A.~Maggiora and A.~Magnon and N.~Makins and N.~Makke and G.K.~Mallot and C.~Marchand and B.~Marianski and A.~Martin and J.~Marzec and J.~Matoušek and H.~Matsuda and T.~Matsuda and G.~Meshcheryakov and W.~Meyer and T.~Michigami and Yu.V.~Mikhailov and Y.~Miyachi and P.~Montuenga and A.~Nagaytsev and F.~Nerling and D.~Neyret and V.I.~Nikolaenko and J.~Nový and W.-D.~Nowak and G.~Nukazuka and A.S.~Nunes and A.G.~Olshevsky and I.~Orlov and M.~Ostrick and D.~Panzieri and B.~Parsamyan and S.~Paul and J.-C.~Peng and F.~Pereira and M.~Pešek and D.V.~Peshekhonov and S.~Platchkov and J.~Pochodzalla and V.A.~Polyakov and J.~Pretz and M.~Quaresma and C.~Quintans and S.~Ramos and C.~Regali and G.~Reicherz and C.~Riedl and N.S.~Rossiyskaya and D.I.~Ryabchikov and A.~Rychter and V.D.~Samoylenko and A.~Sandacz and C.~Santos and S.~Sarkar and I.A.~Savin and G.~Sbrizzai and P.~Schiavon and T.~Schlüter and K.~Schmidt and H.~Schmieden and K.~Schönning and S.~Schopferer and A.~Selyunin and O.Yu.~Shevchenko and L.~Silva and L.~Sinha and S.~Sirtl and M.~Slunecka and F.~Sozzi and A.~Srnka and M.~Stolarski and M.~Sulc and H.~Suzuki and A.~Szabelski and T.~Szameitat and P.~Sznajder and S.~Takekawa and S.~Tessaro and F.~Tessarotto and F.~Thibaud and F.~Tosello and V.~Tskhay and S.~Uhl and J.~Veloso and M.~Virius and T.~Weisrock and M.~Wilfert and J.~ter Wolbeek and K.~Zaremba and M.~Zavertyaev and E.~Zemlyanichkina and M.~Ziembicki and A.~Zink}, title = {{R}esonance {P}roduction and $\pi\pi$ {S}-wave in $\pi^- + p \rightarrow \pi^- \pi^- \pi^+ + p_{recoil}$ at 190 {G}e{V}/c}, year = {2015}, eprint = {1509.00992}, howpublished = {Phys. Rev. D 95, 032004 (2017)}, doi = {10.1103/PhysRevD.95.032004}, note = {arXiv:1509.00992v2} }
PDF
The COMPASS collaboration has collected the currently largest data set on diffractively produced $\pi^-\pi^-\pi^+$ final states using a negative pion beam of 190 GeV/c momentum impinging on a stationary proton target. This data set allows for a systematic partial-wave analysis in 100 bins of three-pion mass, $0.5 < m_{3\pi} < 2.5$ GeV/c$^2$ , and in 11 bins of the reduced four-momentum transfer squared, $0.1 < t < 1.0$ (GeV/c)$^2$ . This two-dimensional analysis offers sensitivity to genuine one-step resonance production, i.e. the production of a state followed by its decay, as well as to more complex dynamical effects in nonresonant $3\pi$ production. In this paper, we present detailed studies on selected $3\pi$ partial waves with $J^{PC} = 0^{-+}$, $1^{++}$, $2^{-+}$, $2^{++}$, and $4^{++}$. In these waves, we observe the well-known ground-state mesons as well as a new narrow axial-vector meson $a_1(1420)$ decaying into $f_0(980) \pi$. In addition, we present the results of a novel method to extract the amplitude of the $\pi^-\pi^+$ subsystem with $I^{G}J^{PC} = 0^+ 0^{++}$ in various partial waves from the $\pi^-\pi^-\pi^+$ data. Evidence is found for correlation of the $f_0(980)$ and $f_0(1500)$ appearing as intermediate $\pi^- \pi^+$ isobars in the decay of the known $\pi(1800)$ and $\pi_2(1880)$.
Interplay among transversity induced asymmetries in hadron leptoproduction
Compass Collaboration, C. Adolph, R. Akhunzyanov, M.G. Alexeev, G.D. Alexeev, A. Amoroso, V. Andrieux, V. Anosov, W. Augustyniak, A. Austregesilo, C.D.R. Azevedo, B. Badelek, F. Balestra, J. Barth, R. Beck, Y. Bedfer, J. Bernhard, K. Bicker, E. R. Bielert, R. Birsa, et al (190)
Jul 29 2015 hep-ex hep-ph arXiv:1507.07593v2

@misc{1507.07593, author = {Compass Collaboration and C.~Adolph and R.~Akhunzyanov and M.G.~Alexeev and G.D.~Alexeev and A.~Amoroso and V.~Andrieux and V.~Anosov and W.~Augustyniak and A.~Austregesilo and C.D.R.~Azevedo and B.~Badelek and F.~Balestra and J.~Barth and R.~Beck and Y.~Bedfer and J.~Bernhard and K.~Bicker and E.~R.~Bielert and R.~Birsa and J.~Bisplinghoff and M.~Bodlak and M.~Boer and P.~Bordalo and F.~Bradamante and C.~Braun and A.~Bressan and M.~Büchele and E.~Burtin and W.-C.~Chang and M.~Chiosso and I.~Choi and S.U.~Chung and A.~Cicuttin and M.L.~Crespo and Q.~Curiel and N.~d'Hose and S.~Dalla Torre and S.S.~Dasgupta and S.~Dasgupta and O.Yu.~Denisov and L.~Dhara and S.V.~Donskov and N.~Doshita and V.~Duic and M.~Dziewiecki and A.~Efremov and C.~Elia and P.D.~Eversheim and W.~Eyrich and A.~Ferrero and M.~Finger and M.~Finger jr.~and H.~Fischer and C.~Franco and N.~du Fresne von Hohenesche and J.M.~Friedrich and V.~Frolov and E.~Fuchey and F.~Gautheron and O.P.~Gavrichtchouk and S.~Gerassimov and F.~Giordano and I.~Gnesi and M.~Gorzellik and S.~Grabmüller and A.~Grasso and M.~Grosse-Perdekamp and B.~Grube and T.~Grussenmeyer and A.~Guskov and F.~Haas and D.~Hahne and D.~von Harrach and R.~Hashimoto and F.H.~Heinsius and F.~Herrmann and F.~Hinterberger and N.~Horikawa and C.-Yu Hsieh and S.~Huber and S.~Ishimoto and A.~Ivanov and Yu.~Ivanshin and T.~Iwata and R.~Jahn and V.~Jary and P.~Jörg and R.~Joosten and E.~Kabuß and B.~Ketzer and G.V.~Khaustov and Yu.A.~Khokhlov and Yu.~Kisselev and F.~Klein and K.~Klimaszewski and J.H.~Koivuniemi and V.N.~Kolosov and K.~Kondo and K.~Königsmann and I.~Konorov and V.F.~Konstantinov and A.M.~Kotzinian and O.~Kouznetsov and M.~Krämer and P.~Kremser and F.~Krinner and Z.V.~Kroumchtein and N.~Kuchinski and F.~Kunne and K.~Kurek and R.P.~Kurjata and A.A.~Lednev and A.~Lehmann and M.~Levillain and S.~Levorato and J.~Lichtenstadt and R.~Longo and A.~Maggiora and A.~Magnon and N.~Makins and N.~Makke and G.K.~Mallot and C.~Marchand and B.~Marianski and A.~Martin and J.~Marzec and J.~Matousek and H.~Matsuda and T.~Matsuda and G.~Meshcheryakov and W.~Meyer and T.~Michigami and Yu.V.~Mikhailov and Y.~Miyachi and P.~Montuenga and A.~Nagaytsev and F.~Nerling and D.~Neyret and V.I.~Nikolaenko and J.~Novy and W.-D.~Nowak and G.~Nukazuka and A.S.~Nunes and A.G.~Olshevsky and I.~Orlov and M.~Ostrick and D.~Panzieri and B.~Parsamyan and S.~Paul and J.-C.~Peng and F.~Pereira and G.~Pesaro and M.~Pesek and D.V.~Peshekhonov and S.~Platchkov and J.~Pochodzalla and V.A.~Polyakov and J.~Pretz and M.~Quaresma and C.~Quintans and S.~Ramos and C.~Regali and G.~Reicherz and C.~Riedl and N.S.~Rossiyskaya and D.I.~Ryabchikov and A.~Rychter and V.D.~Samoylenko and A.~Sandacz and C.~Santos and S.~Sarkar and I.A.~Savin and G.~Sbrizzai and P.~Schiavon and K.~Schmidt and H.~Schmieden and K.~Schönning and S.~Schopferer and A.~Selyunin and O.Yu.~Shevchenko and L.~Silva and L.~Sinha and S.~Sirtl and M.~Slunecka and F.~Sozzi and A.~Srnka and M.~Stolarski and M.~Sulc and H.~Suzuki and A.~Szabelski and T.~Szameitat and P.~Sznajder and S.~Takekawa and J.~ter Wolbeek and S.~Tessaro and F.~Tessarotto and F.~Thibaud and F.~Tosello and V.~Tskhay and S.~Uhl and J.~Veloso and M.~Virius and T.~Weisrock and M.~Wilfert and K.~Zaremba and M.~Zavertyaev and E.~Zemlyanichkina and M.~Ziembicki and A.~Zink}, title = {{I}nterplay among transversity induced asymmetries in hadron leptoproduction}, year = {2015}, eprint = {1507.07593}, note = {arXiv:1507.07593v2} }
PDF
In the fragmentation of a transversely polarized quark several left-right asymmetries are possible for the hadrons in the jet. When only one unpolarized hadron is selected, it exhibits an azimuthal modulation known as Collins effect. When a pair of oppositely charged hadrons is observed, three asymmetries can be considered, a di-hadron asymmetry and two single hadron asymmetries. In lepton deep inelastic scattering on transversely polarized nucleons all these asymmetries are coupled with the transversity distribution. From the high statistics COMPASS data on oppositely charged hadron-pair production we have investigated for the first time the dependence of these three asymmetries on the difference of the azimuthal angles of the two hadrons. The similarity of transversity induced single and di-hadron asymmetries is discussed. A new analysis of the data allows to establish quantitative relationships among them, providing for the first time strong experimental indication that the underlying fragmentation mechanisms are all driven by a common physical process.
Standard Electroweak Interactions in Gravitational Theory with Chameleon Field and Torsion
A. N. Ivanov, M. Wellenzohn
Apr 23 2015 gr-qc hep-ph nucl-ex arXiv:1504.05818v1

@misc{1504.05818, author = {A.~N.~Ivanov and M.~Wellenzohn}, title = {{S}tandard {E}lectroweak {I}nteractions in {G}ravitational {T}heory with {C}hameleon {F}ield and {T}orsion}, year = {2015}, eprint = {1504.05818}, howpublished = {Phys. Rev. D 91, 085025 (2015)}, doi = {10.1103/PhysRevD.91.085025}, note = {arXiv:1504.05818v1} }
PDF
We propose a version of a gravitational theory with the torsion field, induced by the chameleon field. Following Hojman et al. Phys. Rev. D17, 3141 (1976) the results, obtained in Phys. Rev. D90, 045040 (2014), are generalised by extending the Einstein gravity to the Einstein-Cartan gravity with the torsion field as a gradient of the chameleon field through a modification of local gauge invariance of minimal coupling in the Weinberg-Salam electroweak model. The contributions of the chameleon (torsion) field to the observables of electromagnetic and weak processes are calculated. Since in our approach the chameleon-photon coupling constant beta_(gamma) is equal to the chameleon-matter coupling constant beta, i.e. beta_(gamma) = beta, the experimental constraints on beta, obtained in terrestrial laboratories by T. Jenke et al. (Phys. Rev. Lett. 112, 115105 (2014)) and by H. Lemmel et al. (Phys. Lett. B743, 310 (2015)), can be used for the analysis of astrophysical sources of chameleons, proposed by C. Burrage et al. (Phys. Rev. D79, 044028 (2009)), A.-Ch. Davis et al. (Phys. Rev. D80, 064016 (2009), and in references therein, where chameleons induce photons because of direct chameleon-photon transitions in the magnetic fields.
Search for Resonances Decaying to Top and Bottom Quarks with the CDF Experiment
CDF Collaboration, T. Aaltonen, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, F. Anza', G. Apollinari, J.A. Appel, T. Arisawa, A. Artikov, J. Asaadi, W. Ashmanskas, B. Auerbach, A. Aurisano, F. Azfar, W. Badgett, T. Bae, A. Barbaro-Galtieri, et al (385)
Apr 08 2015 hep-ex hep-ph arXiv:1504.01536v1

@misc{1504.01536, author = {CDF Collaboration and T.~Aaltonen and S.~Amerio and D.~Amidei and A.~Anastassov and A.~Annovi and J.~Antos and F.~Anza' and G.~Apollinari and J.A.~Appel and T.~Arisawa and A.~Artikov and J.~Asaadi and W.~Ashmanskas and B.~Auerbach and A.~Aurisano and F.~Azfar and W.~Badgett and T.~Bae and A.~Barbaro-Galtieri and V.E.~Barnes and B.A.~Barnett and P.~Barria and P.~Bartos and M.~Bauce and F.~Bedeschi and S.~Behari and G.~Bellettini and J.~Bellinger and D.~Benjamin and A.~Beretvas and A.~Bhatti and L.~Bianchi and K.R.~Bland and B.~Blumenfeld and A.~Bocci and A.~Bodek and D.~Bortoletto and J.~Boudreau and A.~Boveia and L.~Brigliadori and C.~Bromberg and E.~Brucken and J.~Budagov and H.S.~Budd and K.~Burkett and G.~Busetto and P.~Bussey and P.~Butti and A.~Buzatu and A.~Calamba and S.~Camarda and M.~Campanelli and F.~Canelli and B.~Carls and D.~Carlsmith and R.~Carosi and S.~Carrillo and B.~Casal and M.~Casarsa and A.~Castro and P.~Catastini and D.~Cauz and V.~Cavaliere and A.~Cerri and L.~Cerrito and Y.C.~Chen and M.~Chertok and G.~Chiarelli and G.~Chlachidze and K.~Cho and D.~Chokheli and A.~Clark and C.~Clarke and M.E.~Convery and J.~Conway and M.~Corbo and M.~Cordelli and C.A.~Cox and D.J.~Cox and M.~Cremonesi and D.~Cruz and J.~Cuevas and R.~Culbertson and N.~d'Ascenzo and M.~Datta and P.~de Barbaro and L.~Demortier and L.~Marchese and M.~Deninno and F.~Devoto and M.~D'Errico and A.~Di Canto and B.~Di Ruzza and J.R.~Dittmann and M.~D'Onofrio and S.~Donati and M.~Dorigo and A.~Driutti and K.~Ebina and R.~Edgar and A.~Elagin and R.~Erbacher and S.~Errede and B.~Esham and S.~Farrington and J.P.~Fernández Ramos and R.~Field and G.~Flanagan and R.~Forrest and M.~Franklin and J.C.~Freeman and H.~Frisch and Y.~Funakoshi and C.~Galloni and A.F.~Garfinkel and P.~Garosi and H.~Gerberich and E.~Gerchtein and S.~Giagu and V.~Giakoumopoulou and K.~Gibson and C.M.~Ginsburg and N.~Giokaris and P.~Giromini and V.~Glagolev and D.~Glenzinski and M.~Gold and D.~Goldin and A.~Golossanov and G.~Gomez and G.~Gomez-Ceballos and M.~Goncharov and O.~González López and I.~Gorelov and A.T.~Goshaw and K.~Goulianos and E.~Gramellini and C.~Grosso-Pilcher and R.C.~Group and J.~Guimaraes da Costa and S.R.~Hahn and J.Y.~Han and F.~Happacher and K.~Hara and M.~Hare and R.F.~Harr and T.~Harrington-Taber and K.~Hatakeyama and C.~Hays and J.~Heinrich and M.~Herndon and A.~Hocker and Z.~Hong and W.~Hopkins and S.~Hou and R.E.~Hughes and U.~Husemann and M.~Hussein and J.~Huston and G.~Introzzi and M.~Iori and A.~Ivanov and E.~James and D.~Jang and B.~Jayatilaka and E.J.~Jeon and S.~Jindariani and M.~Jones and K.K.~Joo and S.Y.~Jun and T.R.~Junk and M.~Kambeitz and T.~Kamon and P.E.~Karchin and A.~Kasmi and Y.~Kato and W.~Ketchum and J.~Keung and B.~Kilminster and D.H.~Kim and H.S.~Kim and J.E.~Kim and M.J.~Kim and S.B.~Kim and S.H.~Kim and Y.K.~Kim and Y.J.~Kim and N.~Kimura and M.~Kirby and K.~Knoepfel and K.~Kondo and D.J.~Kong and J.~Konigsberg and A.V.~Kotwal and M.~Kreps and J.~Kroll and M.~Kruse and T.~Kuhr and M.~Kurata and A.T.~Laasanen and S.~Lammel and M.~Lancaster and K.~Lannon and G.~Latino and H.S.~Lee and J.S.~Lee and S.~Leo and S.~Leone and J.D.~Lewis and A.~Limosani and E.~Lipeles and A.~Lister and H.~Liu and Q.~Liu and T.~Liu and S.~Lockwitz and A.~Loginov and A.~Lucà and D.~Lucchesi and J.~Lueck and P.~Lujan and P.~Lukens and G.~Lungu and J.~Lys and R.~Lysak and R.~Madrak and P.~Maestro and S.~Malik and G.~Manca and A.~Manousakis-Katsikakis and F.~Margaroli and P.~Marino and K.~Matera and M.E.~Mattson and A.~Mazzacane and P.~Mazzanti and R.~McNulty and A.~Mehta and P.~Mehtala and C.~Mesropian and T.~Miao and D.~Mietlicki and A.~Mitra and H.~Miyake and S.~Moed and N.~Moggi and C.S.~Moon and R.~Moore and M.J.~Morello and A.~Mukherjee and Th.~Muller and P.~Murat and M.~Mussini and J.~Nachtman and Y.~Nagai and J.~Naganoma and I.~Nakano and A.~Napier and J.~Nett and C.~Neu and T.~Nigmanov and L.~Nodulman and S.Y.~Noh and O.~Norniella and L.~Oakes and S.H.~Oh and Y.D.~Oh and I.~Oksuzian and T.~Okusawa and R.~Orava and L.~Ortolan and C.~Pagliarone and E.~Palencia and P.~Palni and V.~Papadimitriou and W.~Parker and G.~Pauletta and M.~Paulini and C.~Paus and T.J.~Phillips and G.~Piacentino and E.~Pianori and J.~Pilot and K.~Pitts and C.~Plager and L.~Pondrom and S.~Poprocki and K.~Potamianos and F.~Prokoshin and A.~Pranko and F.~Ptohos and G.~Punzi and I.~Redondo Fernández and P.~Renton and M.~Rescigno and F.~Rimondi and L.~Ristori and A.~Robson and T.~Rodriguez and S.~Rolli and M.~Ronzani and R.~Roser and J.L.~Rosner and F.~Ruffini and A.~Ruiz and J.~Russ and V.~Rusu and W.K.~Sakumoto and Y.~Sakurai and L.~Santi and K.~Sato and V.~Saveliev and A.~Savoy-Navarro and P.~Schlabach and E.E.~Schmidt and T.~Schwarz and L.~Scodellaro and F.~Scuri and S.~Seidel and Y.~Seiya and A.~Semenov and F.~Sforza and S.Z.~Shalhout and T.~Shears and P.F.~Shepard and M.~Shimojima and M.~Shochet and I.~Shreyber-Tecker and A.~Simonenko and K.~Sliwa and J.R.~Smith and F.D.~Snider and V.~Sorin and H.~Song and M.~Stancari and R.~St.~Denis and D.~Stentz and J.~Strologas and Y.~Sudo and A.~Sukhanov and I.~Suslov and K.~Takemasa and Y.~Takeuchi and J.~Tang and M.~Tecchio and P.K.~Teng and J.~Thom and E.~Thomson and V.~Thukral and D.~Toback and S.~Tokar and K.~Tollefson and T.~Tomura and D.~Tonelli and S.~Torre and D.~Torretta and P.~Totaro and M.~Trovato and F.~Ukegawa and S.~Uozumi and F.~Vázquez and G.~Velev and C.~Vellidis and C.~Vernieri and M.~Vidal and R.~Vilar and J.~Vizán and M.~Vogel and G.~Volpi and P.~Wagner and R.~Wallny and S.M.~Wang and D.~Waters and W.C.~Wester III and D.~Whiteson and A.B.~Wicklund and S.~Wilbur and H.H.~Williams and J.S.~Wilson and P.~Wilson and B.L.~Winer and P.~Wittich and S.~Wolbers and H.~Wolfe and T.~Wright and X.~Wu and Z.~Wu and K.~Yamamoto and D.~Yamato and T.~Yang and U.K.~Yang and Y.C.~Yang and W.-M.~Yao and G.P.~Yeh and K.~Yi and J.~Yoh and K.~Yorita and T.~Yoshida and G.B.~Yu and I.~Yu and A.M.~Zanetti and Y.~Zeng and C.~Zhou and S.~Zucchelli}, title = {{S}earch for {R}esonances {D}ecaying to {T}op and {B}ottom {Q}uarks with the {CDF} {E}xperiment}, year = {2015}, eprint = {1504.01536}, note = {arXiv:1504.01536v1} }
PDF
We report on a search for charged massive resonances decaying to top ($t$) and bottom ($b$) quarks in the full data set of proton-antiproton collisions at center-of-mass energy of $\sqrt{s} = 1.96$ TeV collected by the CDF~II detector at the Tevatron, corresponding to an integrated luminosity of 9.5 $fb^{-1}$. No significant excess above the standard model (SM) background prediction is observed. We set 95% Bayesian credibility mass-dependent upper limits on the heavy charged particle production cross section times branching ratio to $t b$. Using a SM extension with a $W^{\prime}$ and left-right-symmetric couplings as a benchmark model, we constrain the $W^{\prime}$ mass and couplings in the 300 to 900 GeV/$c^2$ range. The limits presented here are the most stringent for a charged resonance with mass in the range 300 -- 600 GeV/$c^2$ decaying to top and bottom quarks.
The Spin Structure Function $g_1^{\rm p}$ of the Proton and a Test of the Bjorken Sum Rule
C. Adolph, R. Akhunzyanov, M.G. Alexeev, G.D. Alexeev, A. Amoroso, V. Andrieux, V. Anosov, A. Austregesilo, C. Azevedo, B. Badelek, F. Balestra, J. Barth, G. Baum, G. R. Beck, Y. Bedfer, J. Bernhard, K. Bicker, E. R. Bielert, R. Birsa, J. Bisplinghoff, et al (187)
Apr 01 2015 hep-ex hep-ph arXiv:1503.08935v1

@misc{1503.08935, author = {C.~Adolph and R.~Akhunzyanov and M.G.~Alexeev and G.D.~Alexeev and A.~Amoroso and V.~Andrieux and V.~Anosov and A.~Austregesilo and C.~Azevedo and B.~Badelek and F.~Balestra and J.~Barth and G.~Baum and G.~R.~Beck and Y.~Bedfer and J.~Bernhard and K.~Bicker and E.~R.~Bielert and R.~Birsa and J.~Bisplinghoff and M.~Bodlak and M.~Boer and P.~Bordalo and F.~Bradamante and C.~Braun and A.~Bressan and M.~Buechele and E.~Burtin and L.~Capozza and W.-C.~Chang and M.~Chiosso and I.~Choi and S.U.~Chung and A.~Cicuttin and M.L.~Crespo and Q.~Curiel and S.~Dalla Torre and S.S.~Dasgupta and S.~Dasgupta and O.Yu.~Denisov and L.~Dhara and S.V.~Donskov and N.~Doshita and V.~Duic and M.~Dziewiecki and A.~Efremov and P.D.~Eversheim and W.~Eyrich and A.~Ferrero and M.~Finger and M.~Finger jr.~and H.~Fischer and C.~Franco and N.~du Fresne von Hohenesche and J.M.~Friedrich and V.~Frolov and E.~Fuchey and F.~Gautheron and O.P.~Gavrichtchouk and S.~Gerassimov and F.~Giordano and I.~Gnesi and M.~Gorzellik and S.~Grabmüller and A.~Grasso and M.~Grosse-Perdekamp and B.~Grube and T.~Grussenmeyer and A.~Guskov and F.~Haas and D.~Hahne and D.~von Harrach and R.~Hashimoto and F.H.~Heinsius and F.~Herrmann and F.~Hinterberger and N.~Horikawa and N.~d'Hose and C.-Yu Hsieh and S.~Huber and S.~Ishimoto and A.~Ivanov and Yu.~Ivanshin and T.~Iwata and R.~Jahn and V.~Jary and P.~Jörg and R.~Joosten and E.~Kabuß and B.~Ketzer and G.V.~Khaustov and Yu.A.~Khokhlov and Yu.~Kisselev and F.~Klein and K.~Klimaszewski and J.H.~Koivuniemi and V.N.~Kolosov and K.~Kondo and K.~Koenigsmann and I.~Konorov and V.F.~Konstantinov and A.M.~Kotzinian and O.~Kouznetsov and M.~Kraemer and P.~Kremser and F.~Krinner and Z.V.~Kroumchtein and N.~Kuchinski and F.~Kunne and K.~Kurek and R.P.~Kurjata and A.A.~Lednev and A.~Lehmann and M.~Levillain and S.~Levorato and J.~Lichtenstadt and R.~Longo and A.~Maggiora and A.~Magnon and N.~Makins and N.~Makke and G.K.~Mallot and C.~Marchand and A.~Martin and J.~Marzec and J.~Matousek and H.~Matsuda and T.~Matsuda and G.~Meshcheryakov and W.~Meyer and T.~Michigami and Yu.V.~Mikhailov and Y.~Miyachi and A.~Nagaytsev and T.~Nagel and F.~Nerling and D.~Neyret and V.I.~Nikolaenko and J.~Novy and W.-D.~Nowak and A.S.~Nunes and A.G.~Olshevsky and I.~Orlov and M.~Ostrick and D.~Panzieri and B.~Parsamyan and S.~Paul and J.-C.~Peng and F.~Pereira and M.~Pesek and D.V.~Peshekhonov and S.~Platchkov and J.~Pochodzalla and V.A.~Polyakov and J.~Pretz and M.~Quaresma and C.~Quintans and S.~Ramos and C.~Regali and G.~Reicherz and C.~Riedl and E.~Rocco and N.S.~Rossiyskaya and D.I.~Ryabchikov and A.~Rychter and V.D.~Samoylenko and A.~Sandacz and C.~Santos and S.~Sarkar and I.A.~Savin and G.~Sbrizzai and P.~Schiavon and K.~Schmidt and H.~Schmieden and K.~Schoenning and S.~Schopferer and A.~Selyunin and O.Yu.~Shevchenko and L.~Silva and L.~Sinha and S.~Sirtl and M.~Slunecka and F.~Sozzi and A.~Srnka and M.~Stolarski and M.~Sulc and H.~Suzuki and A.~Szabelski and T.~Szameitat and P.~Sznajder and S.~Takekawa and J.~ter Wolbeek and S.~Tessaro and F.~Tessarotto and F.~Thibaud and F.~Tosello and V.~Tskhay and S.~Uhl and J.~Veloso and M.~Virius and T.~Weisrock and M.~Wilfert and K.~Zaremba and M.~Zavertyaev and E.~Zemlyanichkina and M.~Ziembicki and A.~Zink}, title = {{T}he {S}pin {S}tructure {F}unction $g_1^{\rm p}$ of the {P}roton and a {T}est of the {B}jorken {S}um {R}ule}, year = {2015}, eprint = {1503.08935}, note = {arXiv:1503.08935v1} }
PDF
New results for the double spin asymmetry $A_1^{\rm p}$ and the proton longitudinal spin structure function $g_1^{\rm p}$ are presented. They were obtained by the COMPASS collaboration using polarised 200 GeV muons scattered off a longitudinally polarised NH$_3$ target. The data were collected in 2011 and complement those recorded in 2007 at 160\u2009GeV, in particular at lower values of $x$. They improve the statistical precision of $g_1^{\rm p}(x)$ by about a factor of two in the region $x\lesssim 0.02$. A next-to-leading order QCD fit to the $g_1$ world data is performed. It leads to a new determination of the quark spin contribution to the nucleon spin, $\Delta \Sigma$ ranging from 0.26 to 0.36, and to a re-evaluation of the first moment of $g_1^{\rm p}$. The uncertainty of $\Delta \Sigma$ is mostly due to the large uncertainty in the present determinations of the gluon helicity distribution. A new evaluation of the Bjorken sum rule based on the COMPASS results for the non-singlet structure function $g_1^{\rm NS}(x,Q^2)$ yields as ratio of the axial and vector coupling constants $|g_{\rm A}/g_{\rm V}| = 1.22 \pm 0.05~({\rm stat.}) \pm 0.10~({\rm syst.})$, which validates the sum rule to an accuracy of about 9\%.
Neutron Interferometry constrains dark energy chameleon fields
H. Lemmel, Ph. Brax, A. N. Ivanov, T. Jenke, G. Pignol, M. Pitschmann, T. Potocar, M. Wellenzohn, M. Zawisky, H. Abele
Feb 24 2015 hep-ph hep-ex nucl-ex quant-ph arXiv:1502.06023v1

@misc{1502.06023, author = {H.~Lemmel and Ph.~Brax and A.~N.~Ivanov and T.~Jenke and G.~Pignol and M.~Pitschmann and T.~Potocar and M.~Wellenzohn and M.~Zawisky and H.~Abele}, title = {{N}eutron {I}nterferometry constrains dark energy chameleon fields}, year = {2015}, eprint = {1502.06023}, note = {arXiv:1502.06023v1} }
PDF
We present phase shift measurements for neutron matter waves in vacuum and in low pressure Helium using a method originally developed for neutron scattering length measurements in neutron interferometry. We search for phase shifts associated with a coupling to scalar fields. We set stringent limits for a scalar chameleon field, a prominent quintessence dark energy candidate. We find that the coupling constant $\beta$ is less than 1.9 $\times10^7$~for $n=1$ at 95\% confidence level, where $n$ is an input parameter of the self--interaction of the chameleon field $\varphi$ inversely proportional to $\varphi^n$.
Observation of the rare $B^0_s\to\mu^+\mu^-$ decay from the combined analysis of CMS and LHCb data
CMS, LHCb Collaborations, V. Khachatryan, A.M. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, J. Erö, M. Friedl, R. Frühwirth, V.M. Ghete, C. Hartl, N. Hörmann, J. Hrubec, M. Jeitler, W. Kiesenhofer, V. Knünz, M. Krammer, I. Krätschmer, et al (2811)
Nov 18 2014 hep-ex hep-ph arXiv:1411.4413v2

@misc{1411.4413, author = {CMS and LHCb Collaborations and V.~Khachatryan and A.M.~Sirunyan and A.~Tumasyan and W.~Adam and T.~Bergauer and M.~Dragicevic and J.~Erö and M.~Friedl and R.~Frühwirth and V.M.~Ghete and C.~Hartl and N.~Hörmann and J.~Hrubec and M.~Jeitler and W.~Kiesenhofer and V.~Knünz and M.~Krammer and I.~Krätschmer and D.~Liko and I.~Mikulec and D.~Rabady and B.~Rahbaran and H.~Rohringer and R.~Schöfbeck and J.~Strauss and W.~Treberer-Treberspurg and W.~Waltenberger and C.-E.~Wulz and V.~Mossolov and N.~Shumeiko and J.~Suarez Gonzalez and S.~Alderweireldt and S.~Bansal and T.~Cornelis and E.A.~De Wolf and X.~Janssen and A.~Knutsson and J.~Lauwers and S.~Luyckx and S.~Ochesanu and R.~Rougny and M.~Van De Klundert and H.~Van Haevermaet and P.~Van Mechelen and N.~Van Remortel and A.~Van Spilbeeck and F.~Blekman and S.~Blyweert and J.~D'Hondt and N.~Daci and N.~Heracleous and J.~Keaveney and S.~Lowette and M.~Maes and A.~Olbrechts and Q.~Python and D.~Strom and S.~Tavernier and W.~Van Doninck and P.~Van Mulders and G.P.~Van Onsem and I.~Villella and C.~Caillol and B.~Clerbaux and G.~De Lentdecker and D.~Dobur and L.~Favart and A.P.R.~Gay and A.~Grebenyuk and A.~Léonard and A.~Mohammadi and L.~Perniè and A.~Randle-conde and T.~Reis and T.~Seva and L.~Thomas and C.~Vander Velde and P.~Vanlaer and J.~Wang and F.~Zenoni and V.~Adler and K.~Beernaert and L.~Benucci and A.~Cimmino and S.~Costantini and S.~Crucy and S.~Dildick and A.~Fagot and G.~Garcia and J.~Mccartin and A.A.~Ocampo Rios and D.~Ryckbosch and S.~Salva Diblen and M.~Sigamani and N.~Strobbe and F.~Thyssen and M.~Tytgat and E.~Yazgan and N.~Zaganidis and S.~Basegmez and C.~Beluffi and G.~Bruno and R.~Castello and A.~Caudron and L.~Ceard and G.G.~Da Silveira and C.~Delaere and T.~du Pree and D.~Favart and L.~Forthomme and A.~Giammanco and J.~Hollar and A.~Jafari and P.~Jez and M.~Komm and V.~Lemaitre and C.~Nuttens and D.~Pagano and L.~Perrini and A.~Pin and K.~Piotrzkowski and A.~Popov and L.~Quertenmont and M.~Selvaggi and M.~Vidal Marono and J.M.~Vizan Garcia and N.~Beliy and T.~Caebergs and E.~Daubie and G.H.~Hammad and W.L.~Aldá Júnior and G.A.~Alves and L.~Brito and M.~Correa Martins Junior and T.~Dos Reis Martins and C.~Mora Herrera and M.E.~Pol and P.~Rebello Teles and W.~Carvalho and J.~Chinellato and A.~Custódio and E.M.~Da Costa and D.~De Jesus Damiao and C.~De Oliveira Martins and S.~Fonseca De Souza and H.~Malbouisson and D.~Matos Figueiredo and L.~Mundim and H.~Nogima and W.L.~Prado Da Silva and J.~Santaolalla and A.~Santoro and A.~Sznajder and E.J.~Tonelli Manganote and A.~Vilela Pereira and C.A.~Bernardes and S.~Dogra and T.R.~Fernandez Perez Tomei and E.M.~Gregores and P.G.~Mercadante and S.F.~Novaes and Sandra S.~Padula and A.~Aleksandrov and V.~Genchev and R.~Hadjiiska and P.~Iaydjiev and A.~Marinov and S.~Piperov and M.~Rodozov and G.~Sultanov and M.~Vutova and A.~Dimitrov and I.~Glushkov and L.~Litov and B.~Pavlov and P.~Petkov and J.G.~Bian and G.M.~Chen and H.S.~Chen and M.~Chen and T.~Cheng and R.~Du and C.H.~Jiang and R.~Plestina and F.~Romeo and J.~Tao and Z.~Wang and C.~Asawatangtrakuldee and Y.~Ban and Q.~Li and S.~Liu and Y.~Mao and S.J.~Qian and D.~Wang and Z.~Xu and W.~Zou and C.~Avila and A.~Cabrera and L.F.~Chaparro Sierra and C.~Florez and J.P.~Gomez and B.~Gomez Moreno and J.C.~Sanabria and N.~Godinovic and D.~Lelas and D.~Polic and I.~Puljak and Z.~Antunovic and M.~Kovac and V.~Brigljevic and K.~Kadija and J.~Luetic and D.~Mekterovic and L.~Sudic and A.~Attikis and G.~Mavromanolakis and J.~Mousa and C.~Nicolaou and F.~Ptochos and P.A.~Razis and M.~Bodlak and M.~Finger and M.~Finger Jr.~and Y.~Assran and A.~Ellithi Kamel and M.A.~Mahmoud and A.~Radi and M.~Kadastik and M.~Murumaa and M.~Raidal and A.~Tiko and P.~Eerola and G.~Fedi and M.~Voutilainen and J.~Härkönen and V.~Karimäki and R.~Kinnunen and M.J.~Kortelainen and T.~Lampén and K.~Lassila-Perini and S.~Lehti and T.~Lindén and P.~Luukka and T.~Mäenpää and T.~Peltola and E.~Tuominen and J.~Tuominiemi and E.~Tuovinen and L.~Wendland and J.~Talvitie and T.~Tuuva and M.~Besancon and F.~Couderc and M.~Dejardin and D.~Denegri and B.~Fabbro and J.L.~Faure and C.~Favaro and F.~Ferri and S.~Ganjour and A.~Givernaud and P.~Gras and G.~Hamel de Monchenault and P.~Jarry and E.~Locci and J.~Malcles and J.~Rander and A.~Rosowsky and M.~Titov and S.~Baffioni and F.~Beaudette and P.~Busson and C.~Charlot and T.~Dahms and M.~Dalchenko and L.~Dobrzynski and N.~Filipovic and A.~Florent and R.~Granier de Cassagnac and L.~Mastrolorenzo and P.~Miné and C.~Mironov and I.N.~Naranjo and M.~Nguyen and C.~Ochando and G.~Ortona and P.~Paganini and S.~Regnard and R.~Salerno and J.B.~Sauvan and Y.~Sirois and C.~Veelken and Y.~Yilmaz and A.~Zabi and J.-L.~Agram and J.~Andrea and A.~Aubin and D.~Bloch and J.-M.~Brom and E.C.~Chabert and C.~Collard and E.~Conte and J.-C.~Fontaine and D.~Gelé and U.~Goerlach and C.~Goetzmann and A.-C.~Le Bihan and K.~Skovpen and P.~Van Hove and S.~Gadrat and S.~Beauceron and N.~Beaupere and G.~Boudoul and E.~Bouvier and S.~Brochet and C.A.~Carrillo Montoya and J.~Chasserat and R.~Chierici and D.~Contardo and P.~Depasse and H.~El Mamouni and J.~Fan and J.~Fay and S.~Gascon and M.~Gouzevitch and B.~Ille and T.~Kurca and M.~Lethuillier and L.~Mirabito and S.~Perries and J.D.~Ruiz Alvarez and D.~Sabes and L.~Sgandurra and V.~Sordini and M.~Vander Donckt and P.~Verdier and S.~Viret and H.~Xiao and Z.~Tsamalaidze and C.~Autermann and S.~Beranek and M.~Bontenackels and M.~Edelhoff and L.~Feld and A.~Heister and O.~Hindrichs and K.~Klein and A.~Ostapchuk and F.~Raupach and J.~Sammet and S.~Schael and J.F.~Schulte and H.~Weber and B.~Wittmer and V.~Zhukov and M.~Ata and M.~Brodski and E.~Dietz-Laursonn and D.~Duchardt and M.~Erdmann and R.~Fischer and A.~Güth and T.~Hebbeker and C.~Heidemann and K.~Hoepfner and D.~Klingebiel and S.~Knutzen and P.~Kreuzer and M.~Merschmeyer and A.~Meyer and P.~Millet and M.~Olschewski and K.~Padeken and P.~Papacz and H.~Reithler and S.A.~Schmitz and L.~Sonnenschein and D.~Teyssier and S.~Thüer and M.~Weber and V.~Cherepanov and Y.~Erdogan and G.~Flügge and H.~Geenen and M.~Geisler and W.~Haj Ahmad and F.~Hoehle and B.~Kargoll and T.~Kress and Y.~Kuessel and A.~Künsken and J.~Lingemann and A.~Nowack and I.M.~Nugent and O.~Pooth and A.~Stahl and M.~Aldaya Martin and I.~Asin and N.~Bartosik and J.~Behr and U.~Behrens and A.J.~Bell and A.~Bethani and K.~Borras and A.~Burgmeier and A.~Cakir and L.~Calligaris and A.~Campbell and S.~Choudhury and F.~Costanza and C.~Diez Pardos and G.~Dolinska and S.~Dooling and T.~Dorland and G.~Eckerlin and D.~Eckstein and T.~Eichhorn and G.~Flucke and J.~Garay Garcia and A.~Geiser and P.~Gunnellini and J.~Hauk and M.~Hempel and H.~Jung and A.~Kalogeropoulos and M.~Kasemann and P.~Katsas and J.~Kieseler and C.~Kleinwort and I.~Korol and D.~Krücker and W.~Lange and J.~Leonard and K.~Lipka and A.~Lobanov and W.~Lohmann and B.~Lutz and R.~Mankel and I.~Marfin and I.-A.~Melzer-Pellmann and A.B.~Meyer and G.~Mittag and J.~Mnich and A.~Mussgiller and S.~Naumann-Emme and A.~Nayak and E.~Ntomari and H.~Perrey and D.~Pitzl and R.~Placakyte and A.~Raspereza and P.M.~Ribeiro Cipriano and B.~Roland and E.~Ron and M.Ö.~Sahin and J.~Salfeld-Nebgen and P.~Saxena and T.~Schoerner-Sadenius and M.~Schröder and C.~Seitz and S.~Spannagel and A.D.R.~Vargas Trevino and R.~Walsh and C.~Wissing and V.~Blobel and M.~Centis Vignali and A.R.~Draeger and J.~Erfle and E.~Garutti and K.~Goebel and M.~Görner and J.~Haller and M.~Hoffmann and R.S.~Höing and A.~Junkes and H.~Kirschenmann and R.~Klanner and R.~Kogler and J.~Lange and T.~Lapsien and T.~Lenz and I.~Marchesini and J.~Ott and T.~Peiffer and A.~Perieanu and N.~Pietsch and J.~Poehlsen and T.~Poehlsen and D.~Rathjens and C.~Sander and H.~Schettler and P.~Schleper and E.~Schlieckau and A.~Schmidt and M.~Seidel and V.~Sola and H.~Stadie and G.~Steinbrück and D.~Troendle and E.~Usai and L.~Vanelderen and A.~Vanhoefer and C.~Barth and C.~Baus and J.~Berger and C.~Böser and E.~Butz and T.~Chwalek and W.~De Boer and A.~Descroix and A.~Dierlamm and M.~Feindt and F.~Frensch and M.~Giffels and A.~Gilbert and F.~Hartmann and T.~Hauth and U.~Husemann and I.~Katkov and A.~Kornmayer and E.~Kuznetsova and P.~Lobelle Pardo and M.U.~Mozer and T.~Müller and Th.~Müller and A.~Nürnberg and G.~Quast and K.~Rabbertz and S.~Röcker and H.J.~Simonis and F.M.~Stober and R.~Ulrich and J.~Wagner-Kuhr and S.~Wayand and T.~Weiler and R.~Wolf and G.~Anagnostou and G.~Daskalakis and T.~Geralis and V.A.~Giakoumopoulou and A.~Kyriakis and D.~Loukas and A.~Markou and C.~Markou and A.~Psallidas and I.~Topsis-Giotis and A.~Agapitos and S.~Kesisoglou and A.~Panagiotou and N.~Saoulidou and E.~Stiliaris and X.~Aslanoglou and I.~Evangelou and G.~Flouris and C.~Foudas and P.~Kokkas and N.~Manthos and I.~Papadopoulos and E.~Paradas and J.~Strologas and G.~Bencze and C.~Hajdu and P.~Hidas and D.~Horvath and F.~Sikler and V.~Veszpremi and G.~Vesztergombi and A.J.~Zsigmond and N.~Beni and S.~Czellar and J.~Karancsi and J.~Molnar and J.~Palinkas and Z.~Szillasi and A.~Makovec and P.~Raics and Z.L.~Trocsanyi and B.~Ujvari and N.~Sahoo and S.K.~Swain and S.B.~Beri and V.~Bhatnagar and R.~Gupta and U.Bhawandeep and A.K.~Kalsi and M.~Kaur and R.~Kumar and M.~Mittal and N.~Nishu and J.B.~Singh and Ashok Kumar and Arun Kumar and S.~Ahuja and A.~Bhardwaj and B.C.~Choudhary and A.~Kumar and S.~Malhotra and M.~Naimuddin and K.~Ranjan and V.~Sharma and S.~Banerjee and S.~Bhattacharya and K.~Chatterjee and S.~Dutta and B.~Gomber and Sa.~Jain and Sh.~Jain and R.~Khurana and A.~Modak and S.~Mukherjee and D.~Roy and S.~Sarkar and M.~Sharan and A.~Abdulsalam and D.~Dutta and S.~Kailas and V.~Kumar and A.K.~Mohanty and L.M.~Pant and P.~Shukla and A.~Topkar and T.~Aziz and S.~Banerjee and S.~Bhowmik and R.M.~Chatterjee and R.K.~Dewanjee and S.~Dugad and S.~Ganguly and S.~Ghosh and M.~Guchait and A.~Gurtu and G.~Kole and S.~Kumar and M.~Maity and G.~Majumder and K.~Mazumdar and G.B.~Mohanty and B.~Parida and K.~Sudhakar and N.~Wickramage and H.~Bakhshiansohi and H.~Behnamian and S.M.~Etesami and A.~Fahim and R.~Goldouzian and M.~Khakzad and M.~Mohammadi Najafabadi and M.~Naseri and S.~Paktinat Mehdiabadi and F.~Rezaei Hosseinabadi and B.~Safarzadeh and M.~Zeinali and M.~Felcini and M.~Grunewald and M.~Abbrescia and C.~Calabria and S.S.~Chhibra and A.~Colaleo and D.~Creanza and N.~De Filippis and M.~De Palma and L.~Fiore and G.~Iaselli and G.~Maggi and M.~Maggi and S.~My and S.~Nuzzo and A.~Pompili and G.~Pugliese and R.~Radogna and G.~Selvaggi and A.~Sharma and L.~Silvestris and R.~Venditti and P.~Verwilligen and G.~Abbiendi and A.C.~Benvenuti and D.~Bonacorsi and S.~Braibant-Giacomelli and L.~Brigliadori and R.~Campanini and P.~Capiluppi and A.~Castro and F.R.~Cavallo and G.~Codispoti and M.~Cuffiani and G.M.~Dallavalle and F.~Fabbri and A.~Fanfani and D.~Fasanella and P.~Giacomelli and C.~Grandi and L.~Guiducci and S.~Marcellini and G.~Masetti and A.~Montanari and F.L.~Navarria and A.~Perrotta and F.~Primavera and A.M.~Rossi and T.~Rovelli and G.P.~Siroli and N.~Tosi and R.~Travaglini and S.~Albergo and G.~Cappello and M.~Chiorboli and S.~Costa and F.~Giordano and R.~Potenza and A.~Tricomi and C.~Tuve and G.~Barbagli and V.~Ciulli and C.~Civinini and R.~D'Alessandro and E.~Focardi and E.~Gallo and S.~Gonzi and V.~Gori and P.~Lenzi and M.~Meschini and S.~Paoletti and G.~Sguazzoni and A.~Tropiano and L.~Benussi and S.~Bianco and F.~Fabbri and D.~Piccolo and R.~Ferretti and F.~Ferro and M.~Lo Vetere and E.~Robutti and S.~Tosi and M.E.~Dinardo and S.~Fiorendi and S.~Gennai and R.~Gerosa and A.~Ghezzi and P.~Govoni and M.T.~Lucchini and S.~Malvezzi and R.A.~Manzoni and A.~Martelli and B.~Marzocchi and D.~Menasce and L.~Moroni and M.~Paganoni and D.~Pedrini and S.~Ragazzi and N.~Redaelli and T.~Tabarelli de Fatis and S.~Buontempo and N.~Cavallo and S.~Di Guida and F.~Fabozzi and A.O.M.~Iorio and L.~Lista and S.~Meola and M.~Merola and P.~Paolucci and P.~Azzi and N.~Bacchetta and D.~Bisello and A.~Branca and R.~Carlin and P.~Checchia and M.~Dall'Osso and T.~Dorigo and U.~Dosselli and M.~Galanti and F.~Gasparini and U.~Gasparini and P.~Giubilato and A.~Gozzelino and K.~Kanishchev and S.~Lacaprara and M.~Margoni and A.T.~Meneguzzo and J.~Pazzini and N.~Pozzobon and P.~Ronchese and F.~Simonetto and E.~Torassa and M.~Tosi and P.~Zotto and A.~Zucchetta and G.~Zumerle and M.~Gabusi and S.P.~Ratti and V.~Re and C.~Riccardi and P.~Salvini and P.~Vitulo and M.~Biasini and G.M.~Bilei and D.~Ciangottini and L.~Fanò and P.~Lariccia and G.~Mantovani and M.~Menichelli and A.~Saha and A.~Santocchia and A.~Spiezia and K.~Androsov and P.~Azzurri and G.~Bagliesi and J.~Bernardini and T.~Boccali and G.~Broccolo and R.~Castaldi and M.A.~Ciocci and R.~Dell'Orso and S.~Donato and F.~Fiori and L.~Foà and A.~Giassi and M.T.~Grippo and F.~Ligabue and T.~Lomtadze and L.~Martini and A.~Messineo and C.S.~Moon and F.~Palla and A.~Rizzi and A.~Savoy-Navarro and A.T.~Serban and P.~Spagnolo and P.~Squillacioti and R.~Tenchini and G.~Tonelli and A.~Venturi and P.G.~Verdini and C.~Vernieri and L.~Barone and F.~Cavallari and G.~D'imperio and D.~Del Re and M.~Diemoz and C.~Jorda and E.~Longo and F.~Margaroli and P.~Meridiani and F.~Micheli and S.~Nourbakhsh and G.~Organtini and R.~Paramatti and S.~Rahatlou and C.~Rovelli and F.~Santanastasio and L.~Soffi and P.~Traczyk and N.~Amapane and R.~Arcidiacono and S.~Argiro and M.~Arneodo and R.~Bellan and C.~Biino and N.~Cartiglia and S.~Casasso and M.~Costa and A.~Degano and N.~Demaria and L.~Finco and C.~Mariotti and S.~Maselli and E.~Migliore and V.~Monaco and M.~Musich and M.M.~Obertino and L.~Pacher and N.~Pastrone and M.~Pelliccioni and G.L.~Pinna Angioni and A.~Potenza and A.~Romero and M.~Ruspa and R.~Sacchi and A.~Solano and A.~Staiano and U.~Tamponi and S.~Belforte and V.~Candelise and M.~Casarsa and F.~Cossutti and G.~Della Ricca and B.~Gobbo and C.~La Licata and M.~Marone and A.~Schizzi and T.~Umer and A.~Zanetti and S.~Chang and A.~Kropivnitskaya and S.K.~Nam and D.H.~Kim and G.N.~Kim and M.S.~Kim and D.J.~Kong and S.~Lee and Y.D.~Oh and H.~Park and A.~Sakharov and D.C.~Son and T.J.~Kim and J.Y.~Kim and S.~Song and S.~Choi and D.~Gyun and B.~Hong and M.~Jo and H.~Kim and Y.~Kim and B.~Lee and K.S.~Lee and S.K.~Park and Y.~Roh and H.D.~Yoo and M.~Choi and J.H.~Kim and I.C.~Park and G.~Ryu and M.S.~Ryu and Y.~Choi and Y.K.~Choi and J.~Goh and D.~Kim and E.~Kwon and J.~Lee and I.~Yu and A.~Juodagalvis and J.R.~Komaragiri and M.A.B.~Md Ali and E.~Casimiro Linares and H.~Castilla-Valdez and E.~De La Cruz-Burelo and I.~Heredia-de La Cruz and A.~Hernandez-Almada and R.~Lopez-Fernandez and A.~Sanchez-Hernandez and S.~Carrillo Moreno and F.~Vazquez Valencia and I.~Pedraza and H.A.~Salazar Ibarguen and A.~Morelos Pineda and D.~Krofcheck and P.H.~Butler and S.~Reucroft and A.~Ahmad and M.~Ahmad and Q.~Hassan and H.R.~Hoorani and W.A.~Khan and T.~Khurshid and M.~Shoaib and H.~Bialkowska and M.~Bluj and B.~Boimska and T.~Frueboes and M.~Górski and M.~Kazana and K.~Nawrocki and K.~Romanowska-Rybinska and M.~Szleper and P.~Zalewski and G.~Brona and K.~Bunkowski and M.~Cwiok and W.~Dominik and K.~Doroba and A.~Kalinowski and M.~Konecki and J.~Krolikowski and M.~Misiura and M.~Olszewski and W.~Wolszczak and P.~Bargassa and C.~Beirão Da Cruz E Silva and P.~Faccioli and P.G.~Ferreira Parracho and M.~Gallinaro and L.~Lloret Iglesias and F.~Nguyen and J.~Rodrigues Antunes and J.~Seixas and J.~Varela and P.~Vischia and S.~Afanasiev and P.~Bunin and M.~Gavrilenko and I.~Golutvin and I.~Gorbunov and A.~Kamenev and V.~Karjavin and V.~Konoplyanikov and A.~Lanev and A.~Malakhov and V.~Matveev and P.~Moisenz and V.~Palichik and V.~Perelygin and S.~Shmatov and N.~Skatchkov and V.~Smirnov and A.~Zarubin and V.~Golovtsov and Y.~Ivanov and V.~Kim and P.~Levchenko and V.~Murzin and V.~Oreshkin and I.~Smirnov and V.~Sulimov and L.~Uvarov and S.~Vavilov and A.~Vorobyev and An.~Vorobyev and Yu.~Andreev and A.~Dermenev and S.~Gninenko and N.~Golubev and M.~Kirsanov and N.~Krasnikov and A.~Pashenkov and D.~Tlisov and A.~Toropin and V.~Epshteyn and V.~Gavrilov and N.~Lychkovskaya and V.~Popov and I.~Pozdnyakov and G.~Safronov and S.~Semenov and A.~Spiridonov and V.~Stolin and E.~Vlasov and A.~Zhokin and V.~Andreev and M.~Azarkin and I.~Dremin and M.~Kirakosyan and A.~Leonidov and G.~Mesyats and S.V.~Rusakov and A.~Vinogradov and A.~Belyaev and E.~Boos and M.~Dubinin and L.~Dudko and A.~Ershov and A.~Gribushin and V.~Klyukhin and O.~Kodolova and I.~Lokhtin and S.~Obraztsov and S.~Petrushanko and V.~Savrin and A.~Snigirev and I.~Azhgirey and I.~Bayshev and S.~Bitioukov and V.~Kachanov and A.~Kalinin and D.~Konstantinov and V.~Krychkine and V.~Petrov and R.~Ryutin and A.~Sobol and L.~Tourtchanovitch and S.~Troshin and N.~Tyurin and A.~Uzunian and A.~Volkov and P.~Adzic and M.~Ekmedzic and J.~Milosevic and V.~Rekovic and J.~Alcaraz Maestre and C.~Battilana and E.~Calvo and M.~Cerrada and M.~Chamizo Llatas and N.~Colino and B.~De La Cruz and A.~Delgado Peris and D.~Domínguez Vázquez and A.~Escalante Del Valle and C.~Fernandez Bedoya and J.P.~Fernández Ramos and J.~Flix and M.C.~Fouz and P.~Garcia-Abia and O.~Gonzalez Lopez and S.~Goy Lopez and J.M.~Hernandez and M.I.~Josa and E.~Navarro De Martino and A.~Pérez-Calero Yzquierdo and J.~Puerta Pelayo and A.~Quintario Olmeda and I.~Redondo and L.~Romero and M.S.~Soares and C.~Albajar and J.F.~de Trocóniz and M.~Missiroli and D.~Moran and H.~Brun and J.~Cuevas and J.~Fernandez Menendez and S.~Folgueras and I.~Gonzalez Caballero and J.A.~Brochero Cifuentes and I.J.~Cabrillo and A.~Calderon and J.~Duarte Campderros and M.~Fernandez and G.~Gomez and A.~Graziano and A.~Lopez Virto and J.~Marco and R.~Marco and C.~Martinez Rivero and F.~Matorras and F.J.~Munoz Sanchez and J.~Piedra Gomez and T.~Rodrigo and A.Y.~Rodríguez-Marrero and A.~Ruiz-Jimeno and L.~Scodellaro and I.~Vila and R.~Vilar Cortabitarte and D.~Abbaneo and E.~Auffray and G.~Auzinger and M.~Bachtis and P.~Baillon and A.H.~Ball and D.~Barney and A.~Benaglia and J.~Bendavid and L.~Benhabib and J.F.~Benitez and C.~Bernet and P.~Bloch and A.~Bocci and A.~Bonato and O.~Bondu and C.~Botta and H.~Breuker and T.~Camporesi and G.~Cerminara and S.~Colafranceschi and M.~D'Alfonso and D.~d'Enterria and A.~Dabrowski and A.~David and F.~De Guio and A.~De Roeck and S.~De Visscher and E.~Di Marco and M.~Dobson and M.~Dordevic and N.~Dupont-Sagorin and A.~Elliott-Peisert and G.~Franzoni and W.~Funk and D.~Gigi and K.~Gill and D.~Giordano and M.~Girone and F.~Glege and R.~Guida and S.~Gundacker and M.~Guthoff and J.~Hammer and M.~Hansen and P.~Harris and J.~Hegeman and V.~Innocente and P.~Janot and K.~Kousouris and K.~Krajczar and P.~Lecoq and C.~Lourenço and N.~Magini and L.~Malgeri and M.~Mannelli and J.~Marrouche and L.~Masetti and F.~Meijers and S.~Mersi and E.~Meschi and F.~Moortgat and S.~Morovic and M.~Mulders and L.~Orsini and L.~Pape and E.~Perez and L.~Perrozzi and A.~Petrilli and G.~Petrucciani and A.~Pfeiffer and M.~Pimiä and D.~Piparo and M.~Plagge and A.~Racz and G.~Rolandi and M.~Rovere and H.~Sakulin and C.~Schäfer and C.~Schwick and A.~Sharma and P.~Siegrist and P.~Silva and M.~Simon and P.~Sphicas and D.~Spiga and J.~Steggemann and B.~Stieger and M.~Stoye and Y.~Takahashi and D.~Treille and A.~Tsirou and G.I.~Veres and N.~Wardle and H.K.~Wöhri and H.~Wollny and W.D.~Zeuner and W.~Bertl and K.~Deiters and W.~Erdmann and R.~Horisberger and Q.~Ingram and H.C.~Kaestli and D.~Kotlinski and D.~Renker and T.~Rohe and F.~Bachmair and L.~Bäni and L.~Bianchini and M.A.~Buchmann and B.~Casal and N.~Chanon and G.~Dissertori and M.~Dittmar and M.~Donegà and M.~Dünser and P.~Eller and C.~Grab and D.~Hits and J.~Hoss and W.~Lustermann and B.~Mangano and A.C.~Marini and M.~Marionneau and P.~Martinez Ruiz del Arbol and M.~Masciovecchio and D.~Meister and N.~Mohr and P.~Musella and C.~Nägeli and F.~Nessi-Tedaldi and F.~Pandolfi and F.~Pauss and M.~Peruzzi and M.~Quittnat and L.~Rebane and M.~Rossini and A.~Starodumov and M.~Takahashi and K.~Theofilatos and R.~Wallny and H.A.~Weber and C.~Amsler and M.F.~Canelli and V.~Chiochia and A.~De Cosa and A.~Hinzmann and T.~Hreus and B.~Kilminster and C.~Lange and B.~Millan Mejias and J.~Ngadiuba and D.~Pinna and P.~Robmann and F.J.~Ronga and S.~Taroni and M.~Verzetti and Y.~Yang and M.~Cardaci and K.H.~Chen and C.~Ferro and C.M.~Kuo and W.~Lin and Y.J.~Lu and R.~Volpe and S.S.~Yu and P.~Chang and Y.H.~Chang and Y.W.~Chang and Y.~Chao and K.F.~Chen and P.H.~Chen and C.~Dietz and U.~Grundler and W.-S.~Hou and K.Y.~Kao and Y.F.~Liu and R.-S.~Lu and D.~Majumder and E.~Petrakou and Y.M.~Tzeng and R.~Wilken and B.~Asavapibhop and G.~Singh and N.~Srimanobhas and N.~Suwonjandee and A.~Adiguzel and M.N.~Bakirci and S.~Cerci and C.~Dozen and I.~Dumanoglu and E.~Eskut and S.~Girgis and G.~Gokbulut and E.~Gurpinar and I.~Hos and E.E.~Kangal and A.~Kayis Topaksu and G.~Onengut and K.~Ozdemir and S.~Ozturk and A.~Polatoz and D.~Sunar Cerci and B.~Tali and H.~Topakli and M.~Vergili and I.V.~Akin and B.~Bilin and S.~Bilmis and H.~Gamsizkan and B.~Isildak and G.~Karapinar and K.~Ocalan and S.~Sekmen and U.E.~Surat and M.~Yalvac and M.~Zeyrek and E.A.~Albayrak and E.~Gülmez and M.~Kaya and O.~Kaya and T.~Yetkin and K.~Cankocak and F.I.~Vardarlı and L.~Levchuk and P.~Sorokin and J.J.~Brooke and E.~Clement and D.~Cussans and H.~Flacher and J.~Goldstein and M.~Grimes and G.P.~Heath and H.F.~Heath and J.~Jacob and L.~Kreczko and C.~Lucas and Z.~Meng and D.M.~Newbold and S.~Paramesvaran and A.~Poll and T.~Sakuma and S.~Senkin and V.J.~Smith and K.W.~Bell and A.~Belyaev and C.~Brew and R.M.~Brown and D.J.A.~Cockerill and J.A.~Coughlan and K.~Harder and S.~Harper and E.~Olaiya and D.~Petyt and C.H.~Shepherd-Themistocleous and A.~Thea and I.R.~Tomalin and T.~Williams and W.J.~Womersley and S.D.~Worm and M.~Baber and R.~Bainbridge and O.~Buchmuller and D.~Burton and D.~Colling and N.~Cripps and P.~Dauncey and G.~Davies and M.~Della Negra and P.~Dunne and W.~Ferguson and J.~Fulcher and D.~Futyan and G.~Hall and G.~Iles and M.~Jarvis and G.~Karapostoli and M.~Kenzie and R.~Lane and R.~Lucas and L.~Lyons and A.-M.~Magnan and S.~Malik and B.~Mathias and J.~Nash and A.~Nikitenko and J.~Pela and M.~Pesaresi and K.~Petridis and D.M.~Raymond and S.~Rogerson and A.~Rose and C.~Seez and P.~Sharp and A.~Tapper and M.~Vazquez Acosta and T.~Virdee and S.C.~Zenz and J.E.~Cole and P.R.~Hobson and A.~Khan and P.~Kyberd and D.~Leggat and D.~Leslie and I.D.~Reid and P.~Symonds and L.~Teodorescu and M.~Turner and J.~Dittmann and K.~Hatakeyama and A.~Kasmi and H.~Liu and T.~Scarborough and O.~Charaf and S.I.~Cooper and C.~Henderson and P.~Rumerio and A.~Avetisyan and T.~Bose and C.~Fantasia and P.~Lawson and C.~Richardson and J.~Rohlf and J.~St.~John and L.~Sulak and J.~Alimena and E.~Berry and S.~Bhattacharya and G.~Christopher and D.~Cutts and Z.~Demiragli and N.~Dhingra and A.~Ferapontov and A.~Garabedian and U.~Heintz and G.~Kukartsev and E.~Laird and G.~Landsberg and M.~Luk and M.~Narain and M.~Segala and T.~Sinthuprasith and T.~Speer and J.~Swanson and R.~Breedon and G.~Breto and M.~Calderon De La Barca Sanchez and S.~Chauhan and M.~Chertok and J.~Conway and R.~Conway and P.T.~Cox and R.~Erbacher and M.~Gardner and W.~Ko and R.~Lander and M.~Mulhearn and D.~Pellett and J.~Pilot and F.~Ricci-Tam and S.~Shalhout and J.~Smith and M.~Squires and D.~Stolp and M.~Tripathi and S.~Wilbur and R.~Yohay and R.~Cousins and P.~Everaerts and C.~Farrell and J.~Hauser and M.~Ignatenko and G.~Rakness and E.~Takasugi and V.~Valuev and M.~Weber and K.~Burt and R.~Clare and J.~Ellison and J.W.~Gary and G.~Hanson and J.~Heilman and M.~Ivova Rikova and P.~Jandir and E.~Kennedy and F.~Lacroix and O.R.~Long and A.~Luthra and M.~Malberti and M.~Olmedo Negrete and A.~Shrinivas and S.~Sumowidagdo and S.~Wimpenny and J.G.~Branson and G.B.~Cerati and S.~Cittolin and R.T.~D'Agnolo and A.~Holzner and R.~Kelley and D.~Klein and D.~Kovalskyi and J.~Letts and I.~Macneill and D.~Olivito and S.~Padhi and C.~Palmer and M.~Pieri and M.~Sani and V.~Sharma and S.~Simon and Y.~Tu and A.~Vartak and C.~Welke and F.~Würthwein and A.~Yagil and D.~Barge and J.~Bradmiller-Feld and C.~Campagnari and T.~Danielson and A.~Dishaw and V.~Dutta and K.~Flowers and M.~Franco Sevilla and P.~Geffert and C.~George and F.~Golf and L.~Gouskos and J.~Incandela and C.~Justus and N.~Mccoll and J.~Richman and D.~Stuart and W.~To and C.~West and J.~Yoo and A.~Apresyan and A.~Bornheim and J.~Bunn and Y.~Chen and J.~Duarte and A.~Mott and H.B.~Newman and C.~Pena and M.~Pierini and M.~Spiropulu and J.R.~Vlimant and R.~Wilkinson and S.~Xie and R.Y.~Zhu and V.~Azzolini and A.~Calamba and B.~Carlson and T.~Ferguson and Y.~Iiyama and M.~Paulini and J.~Russ and H.~Vogel and I.~Vorobiev and J.P.~Cumalat and W.T.~Ford and A.~Gaz and M.~Krohn and E.~Luiggi Lopez and U.~Nauenberg and J.G.~Smith and K.~Stenson and S.R.~Wagner and J.~Alexander and A.~Chatterjee and J.~Chaves and J.~Chu and S.~Dittmer and N.~Eggert and N.~Mirman and G.~Nicolas Kaufman and J.R.~Patterson and A.~Ryd and E.~Salvati and L.~Skinnari and W.~Sun and W.D.~Teo and J.~Thom and J.~Thompson and J.~Tucker and Y.~Weng and L.~Winstrom and P.~Wittich and D.~Winn and S.~Abdullin and M.~Albrow and J.~Anderson and G.~Apollinari and L.A.T.~Bauerdick and A.~Beretvas and J.~Berryhill and P.C.~Bhat and G.~Bolla and K.~Burkett and J.N.~Butler and H.W.K.~Cheung and F.~Chlebana and S.~Cihangir and V.D.~Elvira and I.~Fisk and J.~Freeman and Y.~Gao and E.~Gottschalk and L.~Gray and D.~Green and S.~Grünendahl and O.~Gutsche and J.~Hanlon and D.~Hare and R.M.~Harris and J.~Hirschauer and B.~Hooberman and S.~Jindariani and M.~Johnson and U.~Joshi and K.~Kaadze and B.~Klima and B.~Kreis and S.~Kwan and J.~Linacre and D.~Lincoln and R.~Lipton and T.~Liu and J.~Lykken and K.~Maeshima and J.M.~Marraffino and V.I.~Martinez Outschoorn and S.~Maruyama and D.~Mason and P.~McBride and P.~Merkel and K.~Mishra and S.~Mrenna and S.~Nahn and C.~Newman-Holmes and V.~O'Dell and O.~Prokofyev and E.~Sexton-Kennedy and S.~Sharma and A.~Soha and W.J.~Spalding and L.~Spiegel and L.~Taylor and S.~Tkaczyk and N.V.~Tran and L.~Uplegger and E.W.~Vaandering and R.~Vidal and A.~Whitbeck and J.~Whitmore and F.~Yang and D.~Acosta and P.~Avery and P.~Bortignon and D.~Bourilkov and M.~Carver and D.~Curry and S.~Das and M.~De Gruttola and G.P.~Di Giovanni and R.D.~Field and M.~Fisher and I.K.~Furic and J.~Hugon and J.~Konigsberg and A.~Korytov and T.~Kypreos and J.F.~Low and K.~Matchev and H.~Mei and P.~Milenovic and G.~Mitselmakher and L.~Muniz and A.~Rinkevicius and L.~Shchutska and M.~Snowball and D.~Sperka and J.~Yelton and M.~Zakaria and S.~Hewamanage and S.~Linn and P.~Markowitz and G.~Martinez and J.L.~Rodriguez and T.~Adams and A.~Askew and J.~Bochenek and B.~Diamond and J.~Haas and S.~Hagopian and V.~Hagopian and K.F.~Johnson and H.~Prosper and V.~Veeraraghavan and M.~Weinberg and M.M.~Baarmand and M.~Hohlmann and H.~Kalakhety and F.~Yumiceva and M.R.~Adams and L.~Apanasevich and D.~Berry and R.R.~Betts and I.~Bucinskaite and R.~Cavanaugh and O.~Evdokimov and L.~Gauthier and C.E.~Gerber and D.J.~Hofman and P.~Kurt and D.H.~Moon and C.~O'Brien and I.D.~Sandoval Gonzalez and C.~Silkworth and P.~Turner and N.~Varelas and B.~Bilki and W.~Clarida and K.~Dilsiz and M.~Haytmyradov and J.-P.~Merlo and H.~Mermerkaya and A.~Mestvirishvili and A.~Moeller and J.~Nachtman and H.~Ogul and Y.~Onel and F.~Ozok and A.~Penzo and R.~Rahmat and S.~Sen and P.~Tan and E.~Tiras and J.~Wetzel and K.~Yi and B.A.~Barnett and B.~Blumenfeld and S.~Bolognesi and D.~Fehling and A.V.~Gritsan and P.~Maksimovic and C.~Martin and M.~Swartz and P.~Baringer and A.~Bean and G.~Benelli and C.~Bruner and R.P.~Kenny III and M.~Malek and M.~Murray and D.~Noonan and S.~Sanders and J.~Sekaric and R.~Stringer and Q.~Wang and J.S.~Wood and I.~Chakaberia and A.~Ivanov and S.~Khalil and M.~Makouski and Y.~Maravin and L.K.~Saini and N.~Skhirtladze and I.~Svintradze and J.~Gronberg and D.~Lange and F.~Rebassoo and D.~Wright and A.~Baden and A.~Belloni and B.~Calvert and S.C.~Eno and J.A.~Gomez and N.J.~Hadley and R.G.~Kellogg and T.~Kolberg and Y.~Lu and A.C.~Mignerey and K.~Pedro and A.~Skuja and M.B.~Tonjes and S.C.~Tonwar and A.~Apyan and R.~Barbieri and G.~Bauer and W.~Busza and I.A.~Cali and M.~Chan and L.~Di Matteo and G.~Gomez Ceballos and M.~Goncharov and D.~Gulhan and M.~Klute and Y.S.~Lai and Y.-J.~Lee and A.~Levin and P.D.~Luckey and T.~Ma and C.~Paus and D.~Ralph and C.~Roland and G.~Roland and G.S.F.~Stephans and K.~Sumorok and D.~Velicanu and J.~Veverka and B.~Wyslouch and M.~Yang and M.~Zanetti and V.~Zhukova and B.~Dahmes and A.~Gude and S.C.~Kao and K.~Klapoetke and Y.~Kubota and J.~Mans and N.~Pastika and R.~Rusack and A.~Singovsky and N.~Tambe and J.~Turkewitz and J.G.~Acosta and S.~Oliveros and E.~Avdeeva and K.~Bloom and S.~Bose and D.R.~Claes and A.~Dominguez and R.~Gonzalez Suarez and J.~Keller and D.~Knowlton and I.~Kravchenko and J.~Lazo-Flores and F.~Meier and F.~Ratnikov and G.R.~Snow and M.~Zvada and J.~Dolen and A.~Godshalk and I.~Iashvili and A.~Kharchilava and A.~Kumar and S.~Rappoccio and G.~Alverson and E.~Barberis and D.~Baumgartel and M.~Chasco and A.~Massironi and D.M.~Morse and D.~Nash and T.~Orimoto and D.~Trocino and R.-J.~Wang and D.~Wood and J.~Zhang and K.A.~Hahn and A.~Kubik and N.~Mucia and N.~Odell and B.~Pollack and A.~Pozdnyakov and M.~Schmitt and S.~Stoynev and K.~Sung and M.~Velasco and S.~Won and A.~Brinkerhoff and K.M.~Chan and A.~Drozdetskiy and M.~Hildreth and C.~Jessop and D.J.~Karmgard and N.~Kellams and K.~Lannon and S.~Lynch and N.~Marinelli and Y.~Musienko and T.~Pearson and M.~Planer and R.~Ruchti and G.~Smith and N.~Valls and M.~Wayne and M.~Wolf and A.~Woodard and L.~Antonelli and J.~Brinson and B.~Bylsma and L.S.~Durkin and S.~Flowers and A.~Hart and C.~Hill and R.~Hughes and K.~Kotov and T.Y.~Ling and W.~Luo and D.~Puigh and M.~Rodenburg and B.L.~Winer and H.~Wolfe and H.W.~Wulsin and O.~Driga and P.~Elmer and J.~Hardenbrook and P.~Hebda and A.~Hunt and S.A.~Koay and P.~Lujan and D.~Marlow and T.~Medvedeva and M.~Mooney and J.~Olsen and P.~Piroué and X.~Quan and H.~Saka and D.~Stickland and C.~Tully and J.S.~Werner and A.~Zuranski and E.~Brownson and S.~Malik and H.~Mendez and J.E.~Ramirez Vargas and V.E.~Barnes and D.~Benedetti and D.~Bortoletto and M.~De Mattia and L.~Gutay and Z.~Hu and M.K.~Jha and M.~Jones and K.~Jung and M.~Kress and N.~Leonardo and D.H.~Miller and N.~Neumeister and B.C.~Radburn-Smith and X.~Shi and I.~Shipsey and D.~Silvers and A.~Svyatkovskiy and F.~Wang and W.~Xie and L.~Xu and J.~Zablocki and N.~Parashar and J.~Stupak and A.~Adair and B.~Akgun and K.M.~Ecklund and F.J.M.~Geurts and W.~Li and B.~Michlin and B.P.~Padley and R.~Redjimi and J.~Roberts and J.~Zabel and B.~Betchart and A.~Bodek and R.~Covarelli and P.~de Barbaro and R.~Demina and Y.~Eshaq and T.~Ferbel and A.~Garcia-Bellido and P.~Goldenzweig and J.~Han and A.~Harel and A.~Khukhunaishvili and S.~Korjenevski and G.~Petrillo and D.~Vishnevskiy and R.~Ciesielski and L.~Demortier and K.~Goulianos and C.~Mesropian and S.~Arora and A.~Barker and J.P.~Chou and C.~Contreras-Campana and E.~Contreras-Campana and D.~Duggan and D.~Ferencek and Y.~Gershtein and R.~Gray and E.~Halkiadakis and D.~Hidas and S.~Kaplan and A.~Lath and S.~Panwalkar and M.~Park and R.~Patel and S.~Salur and S.~Schnetzer and S.~Somalwar and R.~Stone and S.~Thomas and P.~Thomassen and M.~Walker and K.~Rose and S.~Spanier and A.~York and O.~Bouhali and A.~Castaneda Hernandez and R.~Eusebi and W.~Flanagan and J.~Gilmore and T.~Kamon and V.~Khotilovich and V.~Krutelyov and R.~Montalvo and I.~Osipenkov and Y.~Pakhotin and A.~Perloff and J.~Roe and A.~Rose and A.~Safonov and I.~Suarez and A.~Tatarinov and K.A.~Ulmer and N.~Akchurin and C.~Cowden and J.~Damgov and C.~Dragoiu and P.R.~Dudero and J.~Faulkner and K.~Kovitanggoon and S.~Kunori and S.W.~Lee and T.~Libeiro and I.~Volobouev and E.~Appelt and A.G.~Delannoy and S.~Greene and A.~Gurrola and W.~Johns and C.~Maguire and Y.~Mao and A.~Melo and M.~Sharma and P.~Sheldon and B.~Snook and S.~Tuo and J.~Velkovska and M.W.~Arenton and S.~Boutle and B.~Cox and B.~Francis and J.~Goodell and R.~Hirosky and A.~Ledovskoy and H.~Li and C.~Lin and C.~Neu and J.~Wood and C.~Clarke and R.~Harr and P.E.~Karchin and C.~Kottachchi Kankanamge Don and P.~Lamichhane and J.~Sturdy and D.A.~Belknap and D.~Carlsmith and M.~Cepeda and S.~Dasu and L.~Dodd and S.~Duric and E.~Friis and R.~Hall-Wilton and M.~Herndon and A.~Hervé and P.~Klabbers and A.~Lanaro and C.~Lazaridis and A.~Levine and R.~Loveless and A.~Mohapatra and I.~Ojalvo and T.~Perry and G.A.~Pierro and G.~Polese and I.~Ross and T.~Sarangi and A.~Savin and W.H.~Smith and D.~Taylor and C.~Vuosalo and N.~Woods and I.~Bediaga and J.M.~De Miranda and F.~Ferreira Rodrigues and A.~Gomes and A.~Massafferri and A.C.~dos Reis and A.B.~Rodrigues and S.~Amato and K.~Carvalho Akiba and L.~De Paula and O.~Francisco and M.~Gandelman and A.~Hicheur and J.H.~Lopes and D.~Martins Tostes and I.~Nasteva and J.M.~Otalora Goicochea and E.~Polycarpo and C.~Potterat and M.S.~Rangel and V.~Salustino Guimaraes and B.~Souza De Paula and D.~Vieira and L.~An and Y.~Gao and F.~Jing and Y.~Li and Z.~Yang and X.~Yuan and Y.~Zhang and L.~Zhong and L.~Beaucourt and M.~Chefdeville and D.~Decamp and N.~Déléage and Ph.~Ghez and J.-P.~Lees and J.F.~Marchand and M.-N.~Minard and B.~Pietrzyk and W.~Qian and S.~T'Jampens and V.~Tisserand and E.~Tournefier and Z.~Ajaltouni and M.~Baalouch and E.~Cogneras and O.~Deschamps and I.~El Rifai and M.~Grabalosa Gándara and P.~Henrard and M.~Hoballah and R.~Lefèvre and J.~Maratas and S.~Monteil and V.~Niess and P.~Perret and C.~Adrover and S.~Akar and E.~Aslanides and J.~Cogan and W.~Kanso and R.~Le Gac and O.~Leroy and G.~Mancinelli and A.~Mordà and M.~Perrin-Terrin and J.~Serrano and A.~Tsaregorodtsev and Y.~Amhis and S.~Barsuk and M.~Borsato and O.~Kochebina and J.~Lefrançois and F.~Machefert and A.~Martín Sánchez and M.~Nicol and P.~Robbe and M.-H.~Schune and M.~Teklishyn and A.~Vallier and B.~Viaud and G.~Wormser and E.~Ben-Haim and M.~Charles and S.~Coquereau and P.~David and L.~Del Buono and L.~Henry and F.~Polci and J.~Albrecht and T.~Brambach and Ch.~Cauet and M.~Deckenhoff and U.~Eitschberger and R.~Ekelhof and L.~Gavardi and F.~Kruse and F.~Meier and R.~Niet and C.J.~Parkinson and M.~Schlupp and A.~Shires and B.~Spaan and S.~Swientek and J.~Wishahi and O.~Aquines Gutierrez and J.~Blouw and M.~Britsch and M.~Fontana and D.~Popov and M.~Schmelling and D.~Volyanskyy and M.~Zavertyaev and S.~Bachmann and A.~Bien and A.~Comerma-Montells and M.~De Cian and F.~Dordei and S.~Esen and C.~Färber and E.~Gersabeck and L.~Grillo and X.~Han and S.~Hansmann-Menzemer and A.~Jaeger and M.~Kolpin and K.~Kreplin and G.~Krocker and B.~Leverington and J.~Marks and M.~Meissner and M.~Neuner and T.~Nikodem and P.~Seyfert and M.~Stahl and S.~Stahl and U.~Uwer and M.~Vesterinen and S.~Wandernoth and D.~Wiedner and A.~Zhelezov and R.~McNulty and R.~Wallace and W.C.~Zhang and A.~Palano and A.~Carbone and A.~Falabella and D.~Galli and U.~Marconi and N.~Moggi and M.~Mussini and S.~Perazzini and V.~Vagnoni and G.~Valenti and M.~Zangoli and W.~Bonivento and S.~Cadeddu and A.~Cardini and V.~Cogoni and A.~Contu and A.~Lai and B.~Liu and G.~Manca and R.~Oldeman and B.~Saitta and C.~Vacca and M.~Andreotti and W.~Baldini and C.~Bozzi and R.~Calabrese and M.~Corvo and M.~Fiore and M.~Fiorini and E.~Luppi and L.L.~Pappalardo and I.~Shapoval and G.~Tellarini and L.~Tomassetti and S.~Vecchi and L.~Anderlini and A.~Bizzeti and M.~Frosini and G.~Graziani and G.~Passaleva and M.~Veltri and G.~Bencivenni and P.~Campana and P.~De Simone and G.~Lanfranchi and M.~Palutan and M.~Rama and A.~Sarti and B.~Sciascia and R.~Vazquez Gomez and R.~Cardinale and F.~Fontanelli and S.~Gambetta and C.~Patrignani and A.~Petrolini and A.~Pistone and M.~Calvi and L.~Cassina and C.~Gotti and B.~Khanji and M.~Kucharczyk and C.~Matteuzzi and J.~Fu and A.~Geraci and N.~Neri and F.~Palombo and S.~Amerio and G.~Collazuol and S.~Gallorini and A.~Gianelle and D.~Lucchesi and A.~Lupato and M.~Morandin and M.~Rotondo and L.~Sestini and G.~Simi and R.~Stroili and F.~Bedeschi and R.~Cenci and S.~Leo and P.~Marino and M.J.~Morello and G.~Punzi and S.~Stracka and J.~Walsh and G.~Carboni and E.~Furfaro and E.~Santovetti and A.~Satta and A.A.~Alves Jr and G.~Auriemma and V.~Bocci and G.~Martellotti and G.~Penso and D.~Pinci and R.~Santacesaria and C.~Satriano and A.~Sciubba and A.~Dziurda and W.~Kucewicz and T.~Lesiak and B.~Rachwal and M.~Witek and M.~Firlej and T.~Fiutowski and M.~Idzik and P.~Morawski and J.~Moron and A.~Oblakowska-Mucha and K.~Swientek and T.~Szumlak and V.~Batozskaya and K.~Klimaszewski and K.~Kurek and M.~Szczekowski and A.~Ukleja and W.~Wislicki and L.~Cojocariu and L.~Giubega and A.~Grecu and F.~Maciuc and M.~Orlandea and B.~Popovici and S.~Stoica and M.~Straticiuc and G.~Alkhazov and N.~Bondar and A.~Dzyuba and O.~Maev and N.~Sagidova and Y.~Shcheglov and A.~Vorobyev and S.~Belogurov and I.~Belyaev and V.~Egorychev and D.~Golubkov and T.~Kvaratskheliya and I.V.~Machikhiliyan and I.~Polyakov and D.~Savrina and A.~Semennikov and A.~Zhokhov and A.~Berezhnoy and M.~Korolev and A.~Leflat and N.~Nikitin and S.~Filippov and E.~Gushchin and L.~Kravchuk and A.~Bondar and S.~Eidelman and P.~Krokovny and V.~Kudryavtsev and L.~Shekhtman and V.~Vorobyev and A.~Artamonov and K.~Belous and R.~Dzhelyadin and Yu.~Guz and A.~Novoselov and V.~Obraztsov and A.~Popov and V.~Romanovsky and M.~Shapkin and O.~Stenyakin and O.~Yushchenko and A.~Badalov and M.~Calvo Gomez and L.~Garrido and D.~Gascon and R.~Graciani Diaz and E.~Graugés and C.~Marin Benito and E.~Picatoste Olloqui and V.~Rives Molina and H.~Ruiz and X.~Vilasis-Cardona and B.~Adeva and P.~Alvarez Cartelle and A.~Dosil Suárez and V.~Fernandez Albor and A.~Gallas Torreira and J.~García Pardiñas and J.A.~Hernando Morata and M.~Plo Casasus and A.~Romero Vidal and J.J.~Saborido Silva and B.~Sanmartin Sedes and C.~Santamarina Rios and P.~Vazquez Regueiro and C.~Vázquez Sierra and M.~Vieites Diaz and F.~Alessio and F.~Archilli and C.~Barschel and S.~Benson and J.~Buytaert and D.~Campora Perez and L.~Castillo Garcia and M.~Cattaneo and Ph.~Charpentier and X.~Cid Vidal and M.~Clemencic and J.~Closier and V.~Coco and P.~Collins and G.~Corti and B.~Couturier and C.~D'Ambrosio and F.~Dettori and A.~Di Canto and H.~Dijkstra and P.~Durante and M.~Ferro-Luzzi and R.~Forty and M.~Frank and C.~Frei and C.~Gaspar and V.V.~Gligorov and L.A.~Granado Cardoso and T.~Gys and C.~Haen and J.~He and T.~Head and E.~van Herwijnen and R.~Jacobsson and D.~Johnson and C.~Joram and B.~Jost and M.~Karacson and T.M.~Karbach and D.~Lacarrere and B.~Langhans and R.~Lindner and C.~Linn and S.~Lohn and A.~Mapelli and R.~Matev and Z.~Mathe and S.~Neubert and N.~Neufeld and A.~Otto and J.~Panman and M.~Pepe Altarelli and N.~Rauschmayr and M.~Rihl and S.~Roiser and T.~Ruf and H.~Schindler and B.~Schmidt and A.~Schopper and R.~Schwemmer and S.~Sridharan and F.~Stagni and V.K.~Subbiah and F.~Teubert and E.~Thomas and D.~Tonelli and A.~Trisovic and M.~Ubeda Garcia and J.~Wicht and K.~Wyllie and V.~Battista and A.~Bay and F.~Blanc and M.~Dorigo and F.~Dupertuis and C.~Fitzpatrick and S.~Gianì and G.~Haefeli and P.~Jaton and C.~Khurewathanakul and I.~Komarov and V.N.~La Thi and N.~Lopez-March and R.~Märki and M.~Martinelli and B.~Muster and T.~Nakada and A.D.~Nguyen and T.D.~Nguyen and C.~Nguyen-Mau and J.~Prisciandaro and A.~Puig Navarro and B.~Rakotomiaramanana and J.~Rouvinet and O.~Schneider and F.~Soomro and P.~Szczypka and M.~Tobin and S.~Tourneur and M.T.~Tran and G.~Veneziano and Z.~Xu and J.~Anderson and R.~Bernet and E.~Bowen and A.~Bursche and N.~Chiapolini and M.~Chrzaszcz and Ch.~Elsasser and E.~Graverini and F.~Lionetto and P.~Lowdon and K.~Müller and N.~Serra and O.~Steinkamp and B.~Storaci and U.~Straumann and M.~Tresch and A.~Vollhardt and R.~Aaij and S.~Ali and M.~van Beuzekom and P.N.Y.~David and K.~De Bruyn and C.~Farinelli and V.~Heijne and W.~Hulsbergen and E.~Jans and P.~Koppenburg and A.~Kozlinskiy and J.~van Leerdam and M.~Merk and S.~Oggero and A.~Pellegrino and H.~Snoek and J.~van Tilburg and P.~Tsopelas and N.~Tuning and J.A.~de Vries and T.~Ketel and R.F.~Koopman and R.W.~Lambert and D.~Martinez Santos and G.~Raven and M.~Schiller and V.~Syropoulos and S.~Tolk and A.~Dovbnya and S.~Kandybei and I.~Raniuk and O.~Okhrimenko and V.~Pugatch and S.~Bifani and N.~Farley and P.~Griffith and I.R.~Kenyon and C.~Lazzeroni and A.~Mazurov and J.~McCarthy and L.~Pescatore and N.K.~Watson and M.P.~Williams and M.~Adinolfi and J.~Benton and N.H.~Brook and A.~Cook and M.~Coombes and J.~Dalseno and T.~Hampson and S.T.~Harnew and P.~Naik and E.~Price and C.~Prouve and J.H.~Rademacker and S.~Richards and D.M.~Saunders and N.~Skidmore and D.~Souza and J.J.~Velthuis and D.~Voong and W.~Barter and M.-O.~Bettler and H.V.~Cliff and H.-M.~Evans and J.~Garra Tico and V.~Gibson and S.~Gregson and S.C.~Haines and C.R.~Jones and M.~Sirendi and J.~Smith and D.R.~Ward and S.A.~Wotton and S.~Wright and J.J.~Back and T.~Blake and D.C.~Craik and A.C.~Crocombe and D.~Dossett and T.~Gershon and M.~Kreps and C.~Langenbruch and T.~Latham and D.P.~O'Hanlon and T.~Pilař and A.~Poluektov and M.M.~Reid and R.~Silva Coutinho and C.~Wallace and M.~Whitehead and S.~Easo and R.~Nandakumar and A.~Papanestis and S.~Ricciardi and F.F.~Wilson and L.~Carson and P.E.L.~Clarke and G.A.~Cowan and S.~Eisenhardt and D.~Ferguson and D.~Lambert and H.~Luo and A.-B.~Morris and F.~Muheim and M.~Needham and S.~Playfer and M.~Alexander and J.~Beddow and C.-T.~Dean and L.~Eklund and D.~Hynds and S.~Karodia and I.~Longstaff and S.~Ogilvy and M.~Pappagallo and P.~Sail and I.~Skillicorn and F.J.P.~Soler and P.~Spradlin and A.~Affolder and T.J.V.~Bowcock and H.~Brown and G.~Casse and S.~Donleavy and K.~Dreimanis and S.~Farry and R.~Fay and K.~Hennessy and D.~Hutchcroft and M.~Liles and B.~McSkelly and G.D.~Patel and J.D.~Price and A.~Pritchard and K.~Rinnert and T.~Shears and N.A.~Smith and G.~Ciezarek and S.~Cunliffe and R.~Currie and U.~Egede and P.~Fol and A.~Golutvin and S.~Hall and M.~McCann and P.~Owen and M.~Patel and K.~Petridis and F.~Redi and I.~Sepp and E.~Smith and W.~Sutcliffe and D.~Websdale and R.B.~Appleby and R.J.~Barlow and T.~Bird and P.M.~Bjørnstad and S.~Borghi and D.~Brett and J.~Brodzicka and L.~Capriotti and S.~Chen and S.~De Capua and G.~Dujany and M.~Gersabeck and J.~Harrison and C.~Hombach and S.~Klaver and G.~Lafferty and A.~McNab and C.~Parkes and A.~Pearce and S.~Reichert and E.~Rodrigues and P.~Rodriguez Perez and M.~Smith and S.-F.~Cheung and D.~Derkach and T.~Evans and R.~Gauld and E.~Greening and N.~Harnew and D.~Hill and P.~Hunt and N.~Hussain and J.~Jalocha and M.~John and O.~Lupton and S.~Malde and E.~Smith and S.~Stevenson and C.~Thomas and S.~Topp-Joergensen and N.~Torr and G.~Wilkinson and I.~Counts and P.~Ilten and M.~Williams and R.~Andreassen and A.~Davis and W.~De Silva and B.~Meadows and M.D.~Sokoloff and L.~Sun and J.~Todd and J.E.~Andrews and B.~Hamilton and A.~Jawahery and J.~Wimberley and M.~Artuso and S.~Blusk and A.~Borgia and T.~Britton and S.~Ely and P.~Gandini and J.~Garofoli and B.~Gui and C.~Hadjivasiliou and N.~Jurik and M.~Kelsey and R.~Mountain and B.K.~Pal and T.~Skwarnicki and S.~Stone and J.~Wang and Z.~Xing and L.~Zhang and C.~Baesso and M.~Cruz Torres and C.~Göbel and J.~Molina Rodriguez and Y.~Xie and D.A.~Milanes and O.~Grünberg and M.~Heß and C.~Voß and R.~Waldi and T.~Likhomanenko and A.~Malinin and V.~Shevchenko and A.~Ustyuzhanin and F.~Martinez Vidal and A.~Oyanguren and P.~Ruiz Valls and C.~Sanchez Mayordomo and C.J.G.~Onderwater and H.W.~Wilschut and E.~Pesen}, title = {{O}bservation of the rare ${B}^0_s\to\mu^+\mu^-$ decay from the combined analysis of {CMS} and {LHC}b data}, year = {2014}, eprint = {1411.4413}, howpublished = {Nature 522, 68-72 (04 June 2015)}, doi = {10.1038/nature14474}, note = {arXiv:1411.4413v2} }
PDF
A joint measurement is presented of the branching fractions $B^0_s\to\mu^+\mu^-$ and $B^0\to\mu^+\mu^-$ in proton-proton collisions at the LHC by the CMS and LHCb experiments. The data samples were collected in 2011 at a centre-of-mass energy of 7 TeV, and in 2012 at 8 TeV. The combined analysis produces the first observation of the $B^0_s\to\mu^+\mu^-$ decay, with a statistical significance exceeding six standard deviations, and the best measurement of its branching fraction so far. Furthermore, evidence for the $B^0\to\mu^+\mu^-$ decay is obtained with a statistical significance of three standard deviations. The branching fraction measurements are statistically compatible with SM predictions and impose stringent constraints on several theories beyond the SM.
Measurement of indirect CP-violating asymmetries in $D^0\to K^+K^-$ and $D^0\to \pi^+\pi^-$ decays at CDF
CDF Collaboration, T. Aaltonen, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, J.A. Appel, T. Arisawa, A. Artikov, J. Asaadi, W. Ashmanskas, B. Auerbach, A. Aurisano, F. Azfar, W. Badgett, T. Bae, A. Barbaro-Galtieri, V.E. Barnes, et al (382)
Oct 22 2014 hep-ex hep-ph arXiv:1410.5435v2

@misc{1410.5435, author = {CDF Collaboration and T.~Aaltonen and S.~Amerio and D.~Amidei and A.~Anastassov and A.~Annovi and J.~Antos and G.~Apollinari and J.A.~Appel and T.~Arisawa and A.~Artikov and J.~Asaadi and W.~Ashmanskas and B.~Auerbach and A.~Aurisano and F.~Azfar and W.~Badgett and T.~Bae and A.~Barbaro-Galtieri and V.E.~Barnes and B.A.~Barnett and P.~Barria and P.~Bartos and M.~Bauce and F.~Bedeschi and S.~Behari and G.~Bellettini and J.~Bellinger and D.~Benjamin and A.~Beretvas and A.~Bhatti and K.R.~Bland and B.~Blumenfeld and A.~Bocci and A.~Bodek and D.~Bortoletto and J.~Boudreau and A.~Boveia and L.~Brigliadori and C.~Bromberg and E.~Brucken and J.~Budagov and H.S.~Budd and K.~Burkett and G.~Busetto and P.~Bussey and P.~Butti and A.~Buzatu and A.~Calamba and S.~Camarda and M.~Campanelli and F.~Canelli and B.~Carls and D.~Carlsmith and R.~Carosi and S.~Carrillo and B.~Casal and M.~Casarsa and A.~Castro and P.~Catastini and D.~Cauz and V.~Cavaliere and A.~Cerri and L.~Cerrito and Y.C.~Chen and M.~Chertok and G.~Chiarelli and G.~Chlachidze and K.~Cho and D.~Chokheli and A.~Clark and C.~Clarke and M.E.~Convery and J.~Conway and M.~Corbo and M.~Cordelli and C.A.~Cox and D.J.~Cox and M.~Cremonesi and D.~Cruz and J.~Cuevas and R.~Culbertson and N.~d'Ascenzo and M.~Datta and P.~de Barbaro and L.~Demortier and L.~Marchese and M.~Deninno and F.~Devoto and M.~D'Errico and A.~Di Canto and B.~Di Ruzza and J.R.~Dittmann and M.~D'Onofrio and S.~Donati and M.~Dorigo and A.~Driutti and K.~Ebina and R.~Edgar and A.~Elagin and R.~Erbacher and S.~Errede and B.~Esham and S.~Farrington and J.P.~Fernández Ramos and R.~Field and G.~Flanagan and R.~Forrest and M.~Franklin and J.C.~Freeman and H.~Frisch and Y.~Funakoshi and C.~Galloni and A.F.~Garfinkel and P.~Garosi and H.~Gerberich and E.~Gerchtein and S.~Giagu and V.~Giakoumopoulou and K.~Gibson and C.M.~Ginsburg and N.~Giokaris and P.~Giromini and V.~Glagolev and D.~Glenzinski and M.~Gold and D.~Goldin and A.~Golossanov and G.~Gomez and G.~Gomez-Ceballos and M.~Goncharov and O.~González López and I.~Gorelov and A.T.~Goshaw and K.~Goulianos and E.~Gramellini and C.~Grosso-Pilcher and R.C.~Group and J.~Guimaraes da Costa and S.R.~Hahn and J.Y.~Han and F.~Happacher and K.~Hara and M.~Hare and R.F.~Harr and T.~Harrington-Taber and K.~Hatakeyama and C.~Hays and J.~Heinrich and M.~Herndon and A.~Hocker and Z.~Hong and W.~Hopkins and S.~Hou and R.E.~Hughes and U.~Husemann and M.~Hussein and J.~Huston and G.~Introzzi and M.~Iori and A.~Ivanov and E.~James and D.~Jang and B.~Jayatilaka and E.J.~Jeon and S.~Jindariani and M.~Jones and K.K.~Joo and S.Y.~Jun and T.R.~Junk and M.~Kambeitz and T.~Kamon and P.E.~Karchin and A.~Kasmi and Y.~Kato and W.~Ketchum and J.~Keung and B.~Kilminster and D.H.~Kim and H.S.~Kim and J.E.~Kim and M.J.~Kim and S.B.~Kim and S.H.~Kim and Y.K.~Kim and Y.J.~Kim and N.~Kimura and M.~Kirby and K.~Knoepfel and K.~Kondo and D.J.~Kong and J.~Konigsberg and A.V.~Kotwal and M.~Kreps and J.~Kroll and M.~Kruse and T.~Kuhr and M.~Kurata and A.T.~Laasanen and S.~Lammel and M.~Lancaster and K.~Lannon and G.~Latino and H.S.~Lee and J.S.~Lee and S.~Leo and S.~Leone and J.D.~Lewis and A.~Limosani and E.~Lipeles and A.~Lister and H.~Liu and Q.~Liu and T.~Liu and S.~Lockwitz and A.~Loginov and A.~Lucà and D.~Lucchesi and J.~Lueck and P.~Lujan and P.~Lukens and G.~Lungu and J.~Lys and R.~Lysak and R.~Madrak and P.~Maestro and S.~Malik and G.~Manca and A.~Manousakis-Katsikakis and F.~Margaroli and P.~Marino and K.~Matera and M.E.~Mattson and A.~Mazzacane and P.~Mazzanti and R.~McNulty and A.~Mehta and P.~Mehtala and C.~Mesropian and T.~Miao and D.~Mietlicki and A.~Mitra and H.~Miyake and S.~Moed and N.~Moggi and C.S.~Moon and R.~Moore and M.J.~Morello and A.~Mukherjee and Th.~Muller and P.~Murat and M.~Mussini and J.~Nachtman and Y.~Nagai and J.~Naganoma and I.~Nakano and A.~Napier and J.~Nett and C.~Neu and T.~Nigmanov and L.~Nodulman and S.Y.~Noh and O.~Norniella and L.~Oakes and S.H.~Oh and Y.D.~Oh and I.~Oksuzian and T.~Okusawa and R.~Orava and L.~Ortolan and C.~Pagliarone and E.~Palencia and P.~Palni and V.~Papadimitriou and W.~Parker and G.~Pauletta and M.~Paulini and C.~Paus and T.J.~Phillips and E.~Pianori and J.~Pilot and K.~Pitts and C.~Plager and L.~Pondrom and S.~Poprocki and K.~Potamianos and F.~Prokoshin and A.~Pranko and F.~Ptohos and G.~Punzi and I.~Redondo Fernández and P.~Renton and M.~Rescigno and F.~Rimondi and L.~Ristori and A.~Robson and T.~Rodriguez and S.~Rolli and M.~Ronzani and R.~Roser and J.L.~Rosner and F.~Ruffini and A.~Ruiz and J.~Russ and V.~Rusu and W.K.~Sakumoto and Y.~Sakurai and L.~Santi and K.~Sato and V.~Saveliev and A.~Savoy-Navarro and P.~Schlabach and E.E.~Schmidt and T.~Schwarz and L.~Scodellaro and F.~Scuri and S.~Seidel and Y.~Seiya and A.~Semenov and F.~Sforza and S.Z.~Shalhout and T.~Shears and P.F.~Shepard and M.~Shimojima and M.~Shochet and I.~Shreyber-Tecker and A.~Simonenko and K.~Sliwa and J.R.~Smith and F.D.~Snider and V.~Sorin and H.~Song and M.~Stancari and R.~St.~Denis and D.~Stentz and J.~Strologas and Y.~Sudo and A.~Sukhanov and I.~Suslov and K.~Takemasa and Y.~Takeuchi and J.~Tang and M.~Tecchio and P.K.~Teng and J.~Thom and E.~Thomson and V.~Thukral and D.~Toback and S.~Tokar and K.~Tollefson and T.~Tomura and D.~Tonelli and S.~Torre and D.~Torretta and P.~Totaro and M.~Trovato and F.~Ukegawa and S.~Uozumi and F.~Vázquez and G.~Velev and C.~Vellidis and C.~Vernieri and M.~Vidal and R.~Vilar and J.~Vizán and M.~Vogel and G.~Volpi and P.~Wagner and R.~Wallny and S.M.~Wang and D.~Waters and W.C.~Wester III and D.~Whiteson and A.B.~Wicklund and S.~Wilbur and H.H.~Williams and J.S.~Wilson and P.~Wilson and B.L.~Winer and P.~Wittich and S.~Wolbers and H.~Wolfe and T.~Wright and X.~Wu and Z.~Wu and K.~Yamamoto and D.~Yamato and T.~Yang and U.K.~Yang and Y.C.~Yang and W.-M.~Yao and G.P.~Yeh and K.~Yi and J.~Yoh and K.~Yorita and T.~Yoshida and G.B.~Yu and I.~Yu and A.M.~Zanetti and Y.~Zeng and C.~Zhou and S.~Zucchelli}, title = {{M}easurement of indirect {CP}-violating asymmetries in ${D}^0\to {K}^+{K}^-$ and ${D}^0\to \pi^+\pi^-$ decays at {CDF}}, year = {2014}, eprint = {1410.5435}, howpublished = {Phys. Rev. D 90, 111103(R) (2014)}, doi = {10.1103/PhysRevD.90.111103}, note = {arXiv:1410.5435v2} }
PDF
We report a measurement of the indirect CP-violating asymmetries ($A_{\Gamma}$) between effective lifetimes of anticharm and charm mesons reconstructed in $D^0\to K^+ K^-$ and $D^0\to \pi^+\pi^-$ decays. We use the full data set of proton-antiproton collisions collected by the Collider Detector at Fermilab experiment and corresponding to $9.7$~fb$^{-1}$ of integrated luminosity. The strong-interaction decay $D^{*+}\to D^0\pi^+$ is used to identify the meson at production as $D^0$ or $\overline{D}^0$. We statistically subtract $D^0$ and $\overline{D}^0$ mesons originating from $b$-hadron decays and measure the yield asymmetry between anticharm and charm decays as a function of decay time. We measure $A_\Gamma (K^+K^-) = (-0.19 \pm 0.15 (stat) \pm 0.04 (syst))\%$ and $A_\Gamma (\pi^+\pi^-)= (-0.01 \pm 0.18 (stat) \pm 0.03 (syst))\%$. The results are consistent with the hypothesis of CP symmetry and their combination yields $A_\Gamma = (-0.12 \pm 0.12)\%$.
GSI Oscillations as Interference of Neutrino Flavour Mass--Eigenstates and Measuring Process
A. N. Ivanov, P. Kienle
Jun 11 2014 hep-ph nucl-ex nucl-th arXiv:1406.2450v1

@misc{1406.2450, author = {A.~N.~Ivanov and P.~Kienle}, title = {{GSI} {O}scillations as {I}nterference of {N}eutrino {F}lavour {M}ass--{E}igenstates and {M}easuring {P}rocess}, year = {2014}, eprint = {1406.2450}, note = {arXiv:1406.2450v1} }
PDF
This paper is addressed to the proof of the important role of measuring apparatus, i.e. the measuring process, in the formation of necessary and sufficient conditions for the explanation of a time modulation of K-shell electron capture (EC) decay rates of hydrogen-like (H-like) heavy ions (or the GSI oscillations) as the interference of neutrino mass-eigenstates of the electron neutrino constituents. For our analysis we use a toy-model, which has been recently proposed by Peshkin arXiv: 1403.4292 [nucl-th] for a verification of the mechanism of the GSI oscillations as the interference of neutrino mass-eigenstates by Ivanov and Kienle Phys. Rev. Lett. 103, 062502 (2009).
Non-Relativistic Approximation of the Dirac Equation for Slow Fermions in Static Metric Spacetimes
A. N. Ivanov, M. Pitschmann
Jun 11 2014 gr-qc hep-ph nucl-ex arXiv:1406.2484v1

@misc{1406.2484, author = {A.~N.~Ivanov and M.~Pitschmann}, title = {{N}on-{R}elativistic {A}pproximation of the {D}irac {E}quation for {S}low {F}ermions in {S}tatic {M}etric {S}pacetimes}, year = {2014}, eprint = {1406.2484}, note = {arXiv:1406.2484v1} }
PDF
We analyse the non-relativistic approximation of the Dirac equation for slow fermions moving in spacetimes with a static metric, caused by the weak gravitational field of the Earth and a chameleon field, and derive the most general effective gravitational potential, induced by a static metric of spacetime. The derivation of the non-relativistic Hamilton operator of the Dirac equation is carried out by using a standard Foldy-Wouthuysen (SFW) transformation. We discuss the chameleon field as source of a torsion field and torsion-matter interactions.
Measurement of radiative widths of $a_2(1320)$ and $\pi_2(1670)$
C. Adolph, R. Akhunzyanov, M.G. Alekseev, G.D. Alexeev, A. Amoroso, V. Andrieux, V. Anosov, A. Austregesilo, B. Badelek, F. Balestra, J. Barth, G. Baum, R. Beck, Y. Bedfer, A. Berlin, J. Bernhard, K. Bicker, J. Bieling, R. Birsa, J. Bisplinghoff, et al (189)
Mar 12 2014 hep-ex hep-ph arXiv:1403.2644v1

@misc{1403.2644, author = {C.~Adolph and R.~Akhunzyanov and M.G.~Alekseev and G.D.~Alexeev and A.~Amoroso and V.~Andrieux and V.~Anosov and A.~Austregesilo and B.~Badelek and F.~Balestra and J.~Barth and G.~Baum and R.~Beck and Y.~Bedfer and A.~Berlin and J.~Bernhard and K.~Bicker and J.~Bieling and R.~Birsa and J.~Bisplinghoff and M.~Bodlak and M.~Boer and P.~Bordalo and F.~Bradamante and C.~Braun and A.~Bressan and M.~Buechele and E.~Burtin and L.~Capozza and M.~Chiosso and S.U.~Chung and A.~Cicuttin and M.L.~Crespo and Q.~Curiel and S.~Dalla Torre and S.S.~Dasgupta and S.~Dasgupta and O.Yu.~Denisov and S.V.~Donskov and N.~Doshita and V.~Duic and W.~Duennweber and M.~Dziewiecki and A.~Efremov and C.~Elia and P.D.~Eversheim and W.~Eyrich and M.~Faessler and A.~Ferrero and A.~Filin and M.~Finger and M.~Finger~jr.~and H.~Fischer and C.~Franco and N.~du~Fresne~von~Hohenesche and J.M.~Friedrich and V.~Frolov and F.~Gautheron and O.P.~Gavrichtchouk and S.~Gerassimov and R.~Geyer and I.~Gnesi and B.~Gobbo and S.~Goertz and M.~Gorzellik and S.~Grabmueller and A.~Grasso and B.~Grube and A.~Guskov and T.~Guthoerl and F.~Haas and D.~von Harrach and D.~Hahne and R.~Hashimoto and F.H.~Heinsius and F.~Herrmann and F.~Hinterberger and Ch.~Hoeppner and N.~Horikawa and N.~d'Hose and S.~Huber and S.~Ishimoto and A.~Ivanov and Yu.~Ivanshin and T.~Iwata and R.~Jahn and V.~Jary and P.~Jasinski and P.~Joerg and R.~Joosten and E.~Kabuss and B.~Ketzer and G.V.~Khaustov and Yu.A.~Khokhlov and Yu.~Kisselev and F.~Klein and K.~Klimaszewski and J.H.~Koivuniemi and V.N.~Kolosov and K.~Kondo and K.~Koenigsmann and I.~Konorov and V.F.~Konstantinov and A.M.~Kotzinian and O.~Kouznetsov and Z.~Kral and M.~Kraemer and Z.V.~Kroumchtein and N.~Kuchinski and F.~Kunne and K.~Kurek and R.P.~Kurjata and A.A.~Lednev and A.~Lehmann and S.~Levorato and J.~Lichtenstadt and A.~Maggiora and A.~Magnon and N.~Makke and G.K.~Mallot and C.~Marchand and A.~Martin and J.~Marzec and J.~Matousek and H.~Matsuda and T.~Matsuda and G.~Meshcheryakov and W.~Meyer and T.~Michigami and Yu.V.~Mikhailov and Y.~Miyachi and A.~Nagaytsev and T.~Nagel and F.~Nerling and S.~Neubert and D.~Neyret and V.I.~Nikolaenko and J.~Novy and W.-D.~Nowak and A.S.~Nunes and I.~Orlov and A.G.~Olshevsky and M.~Ostrick and R.~Panknin and D.~Panzieri and B.~Parsamyan and S.~Paul and M.~Pesek and S.~Platchkov and J.~Pochodzalla and V.A.~Polyakov and J.~Pretz and M.~Quaresma and C.~Quintans and S.~Ramos and G.~Reicherz and E.~Rocco and A.~Rychter and N.S.~Rossiyskaya and D.I.~Ryabchikov and V.D.~Samoylenko and A.~Sandacz and S.~Sarkar and I.A.~Savin and G.~Sbrizzai and P.~Schiavon and C.~Schill and T.~Schlueter and A.~Schmidt and K.~Schmidt and H.~Schmieden and K.~Schoenning and S.~Schopferer and M.~Schott and O.Yu.~Shevchenko and L.~Silva and L.~Sinha and S.~Sirtl and M.~Slunecka and S.~Sosio and F.~Sozzi and A.~Srnka and L.~Steiger and M.~Stolarski and M.~Sulc and R.~Sulej and H.~Suzuki and A.~Szabelski and T.~Szameitat and P.~Sznajder and S.~Takekawa and J.~ter~Wolbeek and S.~Tessaro and F.~Tessarotto and F.~Thibaud and S.~Uhl and I.~Uman and M.~Vandenbroucke and M.~Virius and J.~Vondra and L.~Wang and T.~Weisrock and M.~Wilfert and R.~Windmolders and H.~Wollny and K.~Zaremba and M.~Zavertyaev and E.~Zemlyanichkina and M.~Ziembicki.}, title = {{M}easurement of radiative widths of $a_2(1320)$ and $\pi_2(1670)$}, year = {2014}, eprint = {1403.2644}, note = {arXiv:1403.2644v1} }
PDF
The COMPASS Collaboration at CERN has investigated the reaction $\pi^- \gamma \rightarrow \pi^-\pi^-\pi^+$ embedded in the Primakoff reaction of $190~\textrm{GeV}$ pions scattering in the Coulomb field of a lead target, $\pi^- \text{Pb} \rightarrow \pi^-\pi^-\pi^+ \text{Pb}$. Exchange of quasi-real photons is selected by isolating the sharp Coulomb peak observed at momentum transfer below $0.001~(\text{GeV}/c)^2$. Using a partial-wave analysis the amplitudes and relative phases of the $a_2(1320)$ and $\pi_2(1670)$ mesons have been extracted, and the Coulomb and the diffractive contributions have been disentangled. Measuring absolute production cross sections we have determined the radiative width of the $a_2(1320)$ to be $\Gamma_0(a_2(1320) \rightarrow \pi\gamma) = (358 \pm 6_{\textrm{stat}} \pm 42_{\textrm{syst}})~\textrm{keV}$. As the first measurement, $\Gamma_0(\pi_2(1670) \rightarrow \pi\gamma) = (181 \pm 11_{\textrm{stat}} \pm 27_{\textrm{syst}})~\textrm{keV} \cdot (\textrm{BR}^{\textrm{PDG}}_{f_2 \pi}/\textrm{BR}_{f_2 \pi})$ is obtained for the radiative width of the $\pi_2(1670)$, where in this analysis the branching ratio $\textrm{BR}^{\textrm{PDG}}_{f_2 \pi}=0.56$ has been used. We compare these values to previous measurements and theoretical predictions.
The Bound-State Beta Decay of the Neutron Revisited
A. N. Ivanov, M. Pitschmann, N. I. Troitskaya, Ya. A. Berdnikov
Jan 31 2014 hep-ph nucl-ex nucl-th arXiv:1401.7809v2

@misc{1401.7809, author = {A.~N.~Ivanov and M.~Pitschmann and N.~I.~Troitskaya and Ya.~A.~Berdnikov}, title = {{T}he {B}ound-{S}tate {B}eta {D}ecay of the {N}eutron {R}evisited}, year = {2014}, eprint = {1401.7809}, doi = {10.1103/PhysRevC.89.055502}, note = {arXiv:1401.7809v2} }
PDF
This paper is addressed to the analysis of the set of observables of the bound-state beta-decay, which can be used for the experimental investigation of contributions of i) interactions beyond the Standard Model (SM) and of ii) the left-handed polarisation state of antineutrinos. For this aim we calculate the branching ratio, probabilities and angular distributions of probabilities of hydrogen in the hyperfine states and of the proton-electron pair in different spinorial states, induced by left-handed and right-handed hadronic and leptonic currents. The branching ratio of the bound-state beta-decay is calculated by taking into account radiative corrections. We show that the probabilities of the bound-state beta-decay can be good observables for experimental investigations of contributions of interactions beyond the SM, whereas the angular distributions of probabilities are good observables for experimental searches of contributions of the left-handed polarisation state of antineutrinos.
A high-statistics measurement of transverse spin effects in dihadron production from muon-proton semi-inclusive deep-inelastic scattering
C. Adolph, R. Akhunzyanov, M.G. Alekseev, Yu. Alexandrov, G.D. Alexeev, A. Amoroso, V. Andrieux, V. Anosov, A. Austregesilo, B. Badelek, F. Balestra, J. Barth, G. Baum, R. Beck, Y. Bedfer, A. Berlin, J. Bernhard, R. Bertini, K. Bicker, J. Bieling, et al (201)
Jan 31 2014 hep-ex hep-ph arXiv:1401.7873v1

@misc{1401.7873, author = {C.~Adolph and R.~Akhunzyanov and M.G.~Alekseev and Yu.~Alexandrov and G.D.~Alexeev and A.~Amoroso and V.~Andrieux and V.~Anosov and A.~Austregesilo and B.~Badelek and F.~Balestra and J.~Barth and G.~Baum and R.~Beck and Y.~Bedfer and A.~Berlin and J.~Bernhard and R.~Bertini and K.~Bicker and J.~Bieling and R.~Birsa and J.~Bisplinghoff and M.~Bodlak and M.~Boer and P.~Bordalo and F.~Bradamante and C.~Braun and A.~Bravar and A.~Bressan and M.~Buechele and E.~Burtin and L.~Capozza and M.~Chiosso and S.U.~Chung and A.~Cicuttin and M.L.~Crespo and Q.~Curiel and S.~Dalla Torre and S.S.~Dasgupta and S.~Dasgupta and O.Yu.~Denisov and S.V.~Donskov and N.~Doshita and V.~Duic and W.~Duennweber and M.~Dziewiecki and A.~Efremov and C.~Elia and P.D.~Eversheim and W.~Eyrich and M.~Faessler and A.~Ferrero and A.~Filin and M.~Finger and M.~Finger jr.~and H.~Fischer and C.~Franco and N.~du Fresne von Hohenesche and J.M.~Friedrich and V.~Frolov and R.~Garfagnini and F.~Gautheron and O.P.~Gavrichtchouk and S.~Gerassimov and R.~Geyer and M.~Giorgi and I.~Gnesi and B.~Gobbo and S.~Goertz and M.~Gorzellik and S.~Grabmueller and A.~Grasso and B.~Grube and A.~Guskov and T.~Guthoerl and F.~Haas and D.~von Harrach and D.~Hahne and R.~Hashimoto and F.H.~Heinsius and F.~Herrmann and F.~Hinterberger and Ch.~Hoeppner and N.~Horikawa and N.~d'Hose and S.~Huber and S.~Ishimoto and A.~Ivanov and Yu.~Ivanshin and T.~Iwata and R.~Jahn and V.~Jary and P.~Jasinski and P.~Joerg and R.~Joosten and E.~Kabuss and D.~Kang and B.~Ketzer and G.V.~Khaustov and Yu.A.~Khokhlov and Yu.~Kisselev and F.~Klein and K.~Klimaszewski and J.H.~Koivuniemi and V.N.~Kolosov and K.~Kondo and K.~Koenigsmann and I.~Konorov and V.F.~Konstantinov and A.M.~Kotzinian and O.~Kouznetsov and Z.~Kral and M.~Kraemer and Z.V.~Kroumchtein and N.~Kuchinski and F.~Kunne and K.~Kurek and R.P.~Kurjata and A.A.~Lednev and A.~Lehmann and S.~Levorato and J.~Lichtenstadt and A.~Maggiora and A.~Magnon and N.~Makke and G.K.~Mallot and C.~Marchand and A.~Martin and J.~Marzec and J.~Matousek and H.~Matsuda and T.~Matsuda and G.~Meshcheryakov and W.~Meyer and T.~Michigami and Yu.V.~Mikhailov and Y.~Miyachi and A.~Nagaytsev and T.~Nagel and F.~Nerling and S.~Neubert and D.~Neyret and V.I.~Nikolaenko and J.~Novy and W.-D.~Nowak and A.S.~Nunes and I.~Orlov and A.G.~Olshevsky and M.~Ostrick and R.~Panknin and D.~Panzieri and B.~Parsamyan and S.~Paul and M.~Pesek and D.~Peshekhonov and G.~Piragino and S.~Platchkov and J.~Pochodzalla and J.~Polak and V.A.~Polyakov and J.~Pretz and M.~Quaresma and C.~Quintans and S.~Ramos and G.~Reicherz and E.~Rocco and V.~Rodionov and E.~Rondio and A.~Rychter and N.S.~Rossiyskaya and D.I.~Ryabchikov and V.D.~Samoylenko and A.~Sandacz and S.~Sarkar and I.A.~Savin and G.~Sbrizzai and P.~Schiavon and C.~Schill and T.~Schlueter and A.~Schmidt and K.~Schmidt and H.~Schmieden and K.~Schoenning and S.~Schopferer and M.~Schott and O.Yu.~Shevchenko and L.~Silva and L.~Sinha and S.~Sirtl and M.~Slunecka and S.~Sosio and F.~Sozzi and A.~Srnka and L.~Steiger and M.~Stolarski and M.~Sulc and R.~Sulej and H.~Suzuki and A.~Szabeleski and T.~Szameitat and P.~Sznajder and S.~Takekawa and J.~ter Wolbeek and S.~Tessaro and F.~Tessarotto and F.~Thibaud and S.~Uhl and I.~Uman and M.~Vandenbroucke and M.~Virius and J.~Vondra and L.~Wang and T.~Weisrock and M.~Wilfert and R.~Windmolders and W.~Wislicki and H.~Wollny and K.~Zaremba and M.~Zavertyaev and E.~Zemlyanichkina and M.~Ziembicki}, title = {{A} high-statistics measurement of transverse spin effects in dihadron production from muon-proton semi-inclusive deep-inelastic scattering}, year = {2014}, eprint = {1401.7873}, note = {arXiv:1401.7873v1} }
PDF
A measurement of the azimuthal asymmetry in dihadron production in deep-inelastic scattering of muons on transversely polarised proton (NH$_{3}$) targets are presented. They provide independent access to the transversity distribution functions through the measurement of the Collins asymmetry in single hadron production. The data were taken in the year $2010$ with the COMPASS spectrometer using a $160\,\mbox{GeV}/c$ muon beam of the CERN SPS, increasing by a factor of about three the available statistics of the previously published data taken in the year $2007$. The measured sizeable asymmetry is in good agreement with the published data. An approximate equality of the Collins asymmetry and the dihadron asymmetry is observed, suggesting a common physical mechanism in the underlying fragmentation.
GSI Oscillations as Laboratory for Testing of New Physics
A. N. Ivanov, P. Kienle
Dec 19 2013 hep-ph nucl-ex nucl-th quant-ph arXiv:1312.5206v2

@misc{1312.5206, author = {A.~N.~Ivanov and P.~Kienle}, title = {{GSI} {O}scillations as {L}aboratory for {T}esting of {N}ew {P}hysics}, year = {2013}, eprint = {1312.5206}, note = {arXiv:1312.5206v2} }
PDF
We analyse recent experimental data on the GSI oscillations of the hydrogen-like heavy ^142\rm Pm^60+ ions that is a time modulation of the K-shell electron capture (EC) decay rate. We follow the mechanism of the GSI oscillations, caused by an interference of the neutrino flavour mass-eigenstates in a content of the electron neutrino. We give arguments that these experimental data show i) an existence of sterile neutrinos that is necessary for an explanation of a phase-shift, ii) an observation of CP violation, related to a phase-shift, and iii) an influence of the Quantum Zeno Effect, explaining different values of the amplitude and phase-shift for two runs of measurements with different time resolutions and different numbers of consecutive measurements.
Snowmass 2013 Top quark working group report
K. Agashe, R. Erbacher, C. E. Gerber, K. Melnikov, R. Schwienhorst, A. Mitov, M. Vos, S. Wimpenny, J. Adelman, M. Baumgart, A. Garcia-Bellido, A. Loginov, A. Jung, M. Schulze, J. Shelton, N. Craig, M. Velasco, T. Golling, J. Hubisz, A. Ivanov, et al (150)
Nov 11 2013 hep-ph hep-ex arXiv:1311.2028v1

@misc{1311.2028, author = {K.~Agashe and R.~Erbacher and C.~E.~Gerber and K.~Melnikov and R.~Schwienhorst and A.~Mitov and M.~Vos and S.~Wimpenny and J.~Adelman and M.~Baumgart and A.~Garcia-Bellido and A.~Loginov and A.~Jung and M.~Schulze and J.~Shelton and N.~Craig and M.~Velasco and T.~Golling and J.~Hubisz and A.~Ivanov and M.~Perelstein and S.~Chekanov and J.~Dolen and J.~Pilot and R.~Pöschl and B.~Tweedie and S.~Alioli and B.~Alvarez-Gonzalez and D.~Amidei and T.~Andeen and A.~Arce and B.~Auerbach and A.~Avetisyan and M.~Backovic and Y.~Bai and M.~Begel and S.~Berge and C.~Bernard and C.~Bernius and S.~Bhattacharya and K.~Black and A.~Blondel and K.~Bloom and T.~Bose and J.~Boudreau and J.~Brau and A.~Broggio and G.~Brooijmans and E.~Brost and R.~Calkins and D.~Chakraborty and T.~Childress and G.~Choudalakis and V.~Coco and J.S.~Conway and C.~Degrande and A.~Delannoy and F.~Deliot and L.~Dell'Asta and E.~Drueke and B.~Dutta and A.~Effron and K.~Ellis and J.~Erdmann and J.~Evans and C.~Feng and E.~Feng and A.~Ferroglia and K.~Finelli and W.~Flanagan and I.~Fleck and A.~Freitas and F.~Garberson and R.~Gonzalez Suarez and M.~L.~Graesser and N.~Graf and Z.~Greenwood and J.~George and C.~Group and A.~Gurrola and G.~Hammad and T.~Han and Z.~Han and U.~Heintz and S.~Hoeche and T.~Horiguchi and I.~Iashvili and A.~Ismail and S.~Jain and P.~Janot and W.~Johns and J.~Joshi and A.~Juste and T.~Kamon and C.~Kao and Y.~Kats and A.~Katz and M.~Kaur and R.~Kehoe and W.~Keung and S.~Khalil and A.~Khanov and A.~Kharchilava and N.~Kidonakis and C.~Kilic and N.~Kolev and A.~Kotwal and J.~Kraus and D.~Krohn and M.~Kruse and A.~Kumar and S.~Lee and E.~Luiggi and S.~Mantry and A.~Melo and D.~Miller and G.~Moortgat-Pick and M.~Narain and N.~Odell and Y.~Oksuzian and M.~Oreglia and A.~Penin and Y.~Peters and C.~Pollard and S.~Poss and H.~B.~Prosper S.~Rappoccio and S.~Redford and M.~Reece and F.~Rizatdinova and P.~Roloff and R.~Ruiz and M.~Saleem and B.~Schoenrock and C.~Schwanenberger and T.~Schwarz and K.~Seidel and E.~Shabalina and P.~Sheldon and F.~Simon and K.~Sinha and P.~Skands and P.~Skubik and G.~Sterman and D.~Stolarski and J.~Strube and J.~Stupak and S.~Su and M.~Tesar and S.~Thomas and E.~Thompson and P.~Tipton and E.~Varnes and N.~Vignaroli and J.~Virzi and M.~Vogel and D.~Walker and K.~Wang and B.~Webber and J.D.~Wells and S.~Westhoff and D.~Whiteson and M.~Williams and S.~Wu and U.~Yang and H.~Yokoya and H.~Yoo and H.~Zhang and N.~Zhou and H.~Zhu and J.~Zupan}, title = {{S}nowmass 2013 {T}op quark working group report}, year = {2013}, eprint = {1311.2028}, note = {arXiv:1311.2028v1} }
PDF
This report summarizes the work of the Energy Frontier Top Quark working group of the 2013 Community Summer Study (Snowmass).
Limits on Fourth Generation Fermions
Andrew Ivanov, for, ATLAS Collaboration, CMS Collaborations
Aug 15 2013 hep-ex hep-ph arXiv:1308.3084v3

@misc{1308.3084, author = {Andrew Ivanov and for and ATLAS Collaboration and CMS Collaborations}, title = {{L}imits on {F}ourth {G}eneration {F}ermions}, year = {2013}, eprint = {1308.3084}, note = {arXiv:1308.3084v3} }
PDF
We present recent results on searches for the fourth generation quarks performed at the CMS and ATLAS experiments at LHC.
Proton Recoil Energy and Angular Distribution of Neutron Radiative Beta Decay
A. N. Ivanov, R. Hollwieser, N. I. Troitskaya, M. Wellenzohn
Jun 20 2013 hep-ph nucl-ex nucl-th arXiv:1306.4448v2

@misc{1306.4448, author = {A.~N.~Ivanov and R.~Hollwieser and N.~I.~Troitskaya and M.~Wellenzohn}, title = {{P}roton {R}ecoil {E}nergy and {A}ngular {D}istribution of {N}eutron {R}adiative {B}eta {D}ecay}, year = {2013}, eprint = {1306.4448}, howpublished = {Physical Review D88, 065026 (2013)}, doi = {10.1103/PhysRevD.88.065026}, note = {arXiv:1306.4448v2} }
PDF
We analyse the proton recoil energy and angular distribution of the radiative beta-decay of the neutron to leading order in the large baryon mass expansion by taking into account the contributions of the proton-photon correlations. We show that the account for the proton-photon correlations does not contradict the description of the radiative corrections to the lifetime of the neutron and the proton recoil energy spectrum of the neutron beta-decay in terms of the functions (\alpha/\pi) g_n(E_e) and (\alpha/\pi) f_n(E_e), where E_e is the electron energy. In addition we find that the contributions of the proton-photon correlations in the radiative beta-decay of the neutron to the proton recoil asymmetry C are of order 10^(-4). They make the contributions of the radiative corrections to the proton recoil asymmetry C symmetric with respect to a change A_0 <--> B_0, where A_0 and B_0 are the correlation coefficients of the neutron beta-decay.
Deficit of reactor antineutrinos at distances smaller than 100 m and inverse beta-decay
A. N. Ivanov, R. Hollwieser, N. I. Troitskaya, M. Wellenzohn, O. M. Zherebtsov, A. P. Serebrov
Jun 11 2013 hep-ph hep-ex nucl-th arXiv:1306.1995v2

@misc{1306.1995, author = {A.~N.~Ivanov and R.~Hollwieser and N.~I.~Troitskaya and M.~Wellenzohn and O.~M.~Zherebtsov and A.~P.~Serebrov}, title = {{D}eficit of reactor antineutrinos at distances smaller than 100 m and inverse beta-decay}, year = {2013}, eprint = {1306.1995}, howpublished = {Phys.Rev. C88, 055501 (2013)}, doi = {10.1103/PhysRevC.88.055501}, note = {arXiv:1306.1995v2} }
PDF
We analyse a change of a deficit of reactor antineutrinos at distances smaller than 100 m by changing the lifetime of the neutron from tau_n = 885.7 s to tau_n = 879.6 s, calculated for the axial coupling constants lambda = - 1.2694 and lambda = - 1.2750, respectively, in order to get a result corresponding the new world average value tau_n = 880.1(1.1) s. We calculate the angular distribution and cross section for the inverse beta-decay, taking into account the contributions of the "weak magnetism" and the neutron recoil to next-to-leading order in the large baryon mass expansion and the radiative corrections of order alpha/\pi ~ 10^(-3), calculated to leading order in the large baryon mass expansion. We obtain an increase of a deficit of reactor antineutrinos in of about 0.734%.
Updated search for the standard model Higgs boson in events with jets and missing transverse energy using the full CDF data set
CDF Collaboration, T. Aaltonen, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, J.A. Appel, T. Arisawa, A. Artikov, J. Asaadi, W. Ashmanskas, B. Auerbach, A. Aurisano, F. Azfar, W. Badgett, T. Bae, A. Barbaro-Galtieri, V.E. Barnes, et al (391)
Jan 21 2013 hep-ex hep-ph arXiv:1301.4440v1

@misc{1301.4440, author = {CDF Collaboration and T.~Aaltonen and S.~Amerio and D.~Amidei and A.~Anastassov and A.~Annovi and J.~Antos and G.~Apollinari and J.A.~Appel and T.~Arisawa and A.~Artikov and J.~Asaadi and W.~Ashmanskas and B.~Auerbach and A.~Aurisano and F.~Azfar and W.~Badgett and T.~Bae and A.~Barbaro-Galtieri and V.E.~Barnes and B.A.~Barnett and P.~Barria and P.~Bartos and M.~Bauce and F.~Bedeschi and S.~Behari and G.~Bellettini and J.~Bellinger and D.~Benjamin and A.~Beretvas and A.~Bhatti and K.R.~Bland and B.~Blumenfeld and A.~Bocci and A.~Bodek and D.~Bortoletto and J.~Boudreau and A.~Boveia and L.~Brigliadori and C.~Bromberg and E.~Brucken and J.~Budagov and H.S.~Budd and K.~Burkett and G.~Busetto and P.~Bussey and P.~Butti and A.~Buzatu and A.~Calamba and S.~Camarda and M.~Campanelli and F.~Canelli and B.~Carls and D.~Carlsmith and R.~Carosi and S.~Carrillo and B.~Casal and M.~Casarsa and A.~Castro and P.~Catastini and D.~Cauz and V.~Cavaliere and M.~Cavalli-Sforza and A.~Cerri and L.~Cerrito and Y.C.~Chen and M.~Chertok and G.~Chiarelli and G.~Chlachidze and K.~Cho and D.~Chokheli and M.A.~Ciocci and A.~Clark and C.~Clarke and M.E.~Convery and J.~Conway and M.~Corbo and M.~Cordelli and C.A.~Cox and D.J.~Cox and M.~Cremonesi and D.~Cruz and J.~Cuevas and R.~Culbertson and N.~d'Ascenzo and M.~Datta and P.~De Barbaro and L.~Demortier and M.~Deninno and F.~Devoto and M.~d'Errico and A.~Di Canto and B.~Di Ruzza and J.R.~Dittmann and M.~D'Onofrio and S.~Donati and M.~Dorigo and A.~Driutti and K.~Ebina and R.~Edgar and A.~Elagin and R.~Erbacher and S.~Errede and B.~Esham and R.~Eusebi and S.~Farrington and J.P.~Fernandez Ramos and R.~Field and G.~Flanagan and R.~Forrest and M.~Franklin and J.C.~Freeman and H.~Frisch and Y.~Funakoshi and A.F.~Garfinkel and P.~Garosi and H.~Gerberich and E.~Gerchtein and S.~Giagu and V.~Giakoumopoulou and K.~Gibson and C.M.~Ginsburg and N.~Giokaris and P.~Giromini and G.~Giurgiu and V.~Glagolev and D.~Glenzinski and M.~Gold and D.~Goldin and A.~Golossanov and G.~Gomez and G.~Gomez-Ceballos and M.~Goncharov and O.~Gonzalez Lopez and I.~Gorelov and A.T.~Goshaw and K.~Goulianos and E.~Gramellini and S.~Grinstein and C.~Grosso-Pilcher and R.C.~Group and J.~Guimaraes da Costa and S.R.~Hahn and J.Y.~Han and F.~Happacher and K.~Hara and M.~Hare and R.F.~Harr and T.~Harrington-Taber and K.~Hatakeyama and C.~Hays and J.~Heinrich and M.~Herndon and A.~Hocker and Z.~Hong and W.~Hopkins and S.~Hou and R.E.~Hughes and U.~Husemann and J.~Huston and G.~Introzzi and M.~Iori and A.~Ivanov and E.~James and D.~Jang and B.~Jayatilaka and E.J.~Jeon and S.~Jindariani and M.~Jones and K.K.~Joo and S.Y.~Jun and T.R.~Junk and M.~Kambeitz and T.~Kamon and P.E.~Karchin and A.~Kasmi and Y.~Kato and W.~Ketchum and J.~Keung and B.~Kilminster and D.H.~Kim and H.S.~Kim and J.E.~Kim and M.J.~Kim and S.B.~Kim and S.H.~Kim and Y.K.~Kim and Y.J.~Kim and N.~Kimura and M.~Kirby and K.~Knoepfel and K.~Kondo and D.J.~Kong and J.~Konigsberg and A.V.~Kotwal and M.~Kreps and J.~Kroll and M.~Kruse and T.~Kuhr and M.~Kurata and A.T.~Laasanen and S.~Lammel and M.~Lancaster and K.~Lannon and G.~Latino and H.S.~Lee and J.S.~Lee and S.~Leo and S.~Leone and J.D.~Lewis and A.~Limosani and E.~Lipeles and T.~Liu and Q.~Liu and T.~Liu and S.~Lockwitz and A.~Loginov and D.~Lucchesi and J.~Lueck and P.~Lujan and P.~Lukens and G.~Lungu and J.~Lys and R.~Lysak and R.~Madrak and P.~Maestro and S.~Malik and G.~Manca and A.~Manousakis-Katsikakis and F.~Margaroli and P.~Marino and M.~Martinez and K.~Matera and M.E.~Mattson and A.~Mazzacane and P.~Mazzanti and R.~McNulty and A.~Mehta and P.~Mehtala and C.~Mesropian and T.~Miao and D.~Mietlicki and A.~Mitra and H.~Miyake and S.~Moed and N.~Moggi and C.S.~Moon and R.~Moore and M.J.~Morello and A.~Mukherjee and Th.~Muller and P.~Murat and M.~Mussini and J.~Nachtman and Y.~Nagai and J.~Naganoma and I.~Nakano and A.~Napier and J.~Nett and C.~Neu and T.~Nigmanov and L.~Nodulman and S.Y.~Noh and O.~Norniella and L.~Oakes and S.H.~Oh and Y.D.~Oh and I.~Oksuzian and T.~Okusawa and R.~Orava and L.~Ortolan and C.~Pagliarone and E.~Palencia and P.~Palni and V.~Papadimitriou and W.~Parker and G.~Pauletta and M.~Paulini and C.~Paus and T.J.~Phillips and G.~Piacentino and E.~Pianori and J.~Pilot and K.~Pitts and C.~Plager and L.~Pondrom and S.~Poprocki and K.~Potamianos and F.~Prokoshin and A.~Pranko and F.~Ptohos and G.~Punzi and N.~Ranjan and I.~Redondo Fernandez and P.~Renton and M.~Rescigno and T.~Riddick and F.~Rimondi and L.~Ristori and A.~Robson and T.~Rodriguez and S.~Rolli and M.~Ronzani and R.~Roser and J.L.~Rosner and F.~Ruffini and A.~Ruiz and J.~Russ and V.~Rusu and A.~Safonov and W.K.~Sakumoto and Y.~Sakurai and L.~Santi and K.~Sato and V.~Saveliev and A.~Savoy-Navarro and P.~Schlabach and E.E.~Schmidt and T.~Schwarz and L.~Scodellaro and F.~Scuri and S.~Seidel and Y.~Seiya and A.~Semenov and F.~Sforza and S.Z.~Shalhout and T.~Shears and P.F.~Shepard and M.~Shimojima and M.~Shochet and I.~Shreyber-Tecker and A.~Simonenko and P.~Sinervo and K.~Sliwa and J.R.~Smith and F.D.~Snider and V.~Sorin and H.~Song and M.~Stancari and R.~St.~Denis and B.~Stelzer and O.~Stelzer-Chilton and D.~Stentz and J.~Strologas and Y.~Sudo and A.~Sukhanov and I.~Suslov and K.~Takemasa and Y.~Takeuchi and J.~Tang and M.~Tecchio and P.K.~Teng and J.~Thom and E.~Thomson and V.~Thukral and D.~Toback and S.~Tokar and K.~Tollefson and T.~Tomura and D.~Tonelli and S.~Torre and D.~Torretta and P.~Totaro and M.~Trovato and F.~Ukegawa and S.~Uozumi and F.~Vaquez and G.~Velev and C.~Vellidis and C.~Vernieri and M.~Vidal and R.~Vilar and J.~Vizan and M.~Vogel and G.~Volpi and P.~Wagner and R.~Wallny and S.M.~Wang and A.~Warburton and D.~Waters and W.C.~Wester III and D.~Whiteson and A.B.~Wicklund and S.~Wilbur and H.H.~Williams and J.S.~Wilson and P.~Wilson and B.L.~Winer and P.~Wittich and S.~Wolbers and H.~Wolfe and T.~Wright and X.~Wu and Z.~Wu and K.~Yamamoto and D.~Yamato and T.~Yang and U.K.~Yang and Y.C.~Yang and W.-M.~Yao and G.P.~Yeh and K.~Yi and J.~Yoh and K.~Yorita and T.~Yoshida and G.B.~Yu and I.~Yu and A.M.~Zanetti and Y.~Zeng and C.~Zhou and S.~Zucchelli}, title = {{U}pdated search for the standard model {H}iggs boson in events with jets and missing transverse energy using the full {CDF} data set}, year = {2013}, eprint = {1301.4440}, doi = {10.1103/PhysRevD.87.052008}, note = {arXiv:1301.4440v1} }
PDF
We present an updated search for the Higgs boson produced in association with a vector boson in the final state with missing transverse energy and two jets. We use the full CDF data set corresponding to an integrated luminosity of 9.45 fb${}^{-1}$ at a proton-antiproton center-of-mass energy of $\sqrt{s}=1.96$ TeV. New to this analysis is the inclusion of a $b$-jet identification algorithm specifically optimized for $H\to b\bar{b}$ searches. Across the Higgs boson mass range $90 \le m_H \le 150$ GeV$/c^2$, the expected 95% credibility level upper limits on the $V H$ production cross section times the $H\to b\bar{b}$ branching fraction are improved by an average of 14% relative to the previous analysis. At a Higgs boson mass of 125 GeV$/c^2$, the observed (expected) limit is 3.06 (3.33) times the standard model prediction, corresponding to one of the most sensitive searches to date in this final state.
Neutron Beta-Decay as Laboratory for Test of Standard Model
A. N. Ivanov, M. Pitschmann, N. I. Troitskaya
Dec 04 2012 hep-ph hep-ex nucl-ex arXiv:1212.0332v6

@misc{1212.0332, author = {A.~N.~Ivanov and M.~Pitschmann and N.~I.~Troitskaya}, title = {{N}eutron {B}eta-{D}ecay as {L}aboratory for {T}est of {S}tandard {M}odel}, year = {2012}, eprint = {1212.0332}, howpublished = {Phys.Rev. D88, 073002 (2013)}, doi = {10.1103/PhysRevD.88.073002}, note = {arXiv:1212.0332v6} }
PDF
We analyse the sensitivity of all experimentally observable asymmetries and energy distributions for the neutron beta-decay with a polarised neutron and unpolarised decay proton and electron and the lifetime of the neutron to contributions of order 10^(-4) of interactions beyond the Standard model (SM).
Hadron production in lepton-nuclei interactions at high energies: Monte Carlo generator HARDPING 2.0
Yaroslav Berdnikov, Alexey Ivanov, Victor Kim, Victor Murzin
Apr 23 2012 hep-ph nucl-th arXiv:1204.4595v1

@misc{1204.4595, author = {Yaroslav Berdnikov and Alexey Ivanov and Victor Kim and Victor Murzin}, title = {{H}adron production in lepton-nuclei interactions at high energies: {M}onte {C}arlo generator {HARDPING} 2.0}, year = {2012}, eprint = {1204.4595}, howpublished = {JETP Letters 96 (2012) 85-89}, note = {arXiv:1204.4595v1} }
PDF
Hadron production in lepton-nucleus interactions at high-energies is considered in framework of developing Monte Carlo event generator HARDPING (HARD Probe INteraction Generator). Such effects as formation length, energy loss and multiple rescattering for produced hadrons and their constituents are implemented into the HARDPING 2.0. Available data from HERMES collaboration on hadron production in lepton-nucleus collisions are described by the present version of the HARDPING generator in a reasonable agreement.
Molecule model for deeply bound and broad kaonic nuclear clusters
A. N. Ivanov, P. Kienle, J. Marton, M. Pitschmann
Feb 22 2011 nucl-th hep-ph nucl-ex arXiv:1102.4163v1

@misc{1102.4163, author = {A.~N.~Ivanov and P.~Kienle and J.~Marton and M.~Pitschmann}, title = {{M}olecule model for deeply bound and broad kaonic nuclear clusters}, year = {2011}, eprint = {1102.4163}, note = {arXiv:1102.4163v1} }
PDF
A molecule model is proposed for the description of the properties of the kaonic nuclear cluster (KNC) anti-KNN with the structure N(ant-KN)_(I = 0) and quantum numbers I(J^P) = 1/2(0^-), the large binding energy B^(\exp)_(anti-KNN) = 103(6) MeV and the width Gamma^(\exp)_(anti-KNN) = 118(13) MeV, observed recently by the DISTO Collaboration. The theoretical values of the binding energy B^(th)_(anti-KNN) = 118 MeV, the width Gamma^(th)_(anti-KNN) = 142 MeV of the KNC anti-KNN and the density n_(anti-KNN) = 2.71 n_0, where n_0= 0.17 fm^(-3) is the normal nuclear density, reproduce well the large experimental values. They are calculated with the trial harmonic oscillator wave functions by using chiral Lagrangians, accounting for all self-energy terms, contributing to the masses of the kaonic nuclear clusters (anti-KN)_(I = 0) and anti-KNN. In addition the high Lambda*p sticking probability in the pp reaction at the kinetic energy T_p = 2.85 GeV of the incident proton is explained.