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3 results for au:Aleshko_A in:hep-ex
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SPD Collaboration, V. Abazov, V. Abramov, L. Afanasyev, R. Akhunzyanov, A. Akindinov, I. Alekseev, A. Aleshko, V. Alexakhin, G. Alexeev, L. Alimov, A. Allakhverdieva, A. Amoroso, V. Andreev, V. Andreev, E. Andronov, Yu. Anikin, S. Anischenko, A. Anisenkov, V. Anosov, et al (397) The Spin Physics Detector collaboration proposes to install a universal detector in the second interaction point of the NICA collider under construction (JINR, Dubna) to study the spin structure of the proton and deuteron and other spin-related phenomena using a unique possibility to operate with polarized proton and deuteron beams at a collision energy up to 27 GeV and a luminosity up to $10^{32}$ cm$^{-2}$ s$^{-1}$. As the main goal, the experiment aims to provide access to the gluon TMD PDFs in the proton and deuteron, as well as the gluon transversity distribution and tensor PDFs in the deuteron, via the measurement of specific single and double spin asymmetries using different complementary probes such as charmonia, open charm, and prompt photon production processes. Other polarized and unpolarized physics is possible, especially at the first stage of NICA operation with reduced luminosity and collision energy of the proton and ion beams. This document is dedicated exclusively to technical issues of the SPD setup construction.
V.V. Abramov, A. Aleshko, V.A. Baskov, E.Boos, V.Bunichev, O.D. Dalkarov, R. El-Kholy, A. Galoyan, A.V. Guskov, V.T. Kim, E. Kokoulina, I.A. Koop, B.F. Kostenko, A.D. Kovalenko, V.P. Ladygin, A.B. Larionov, A.I. L'vov, A.I. Milstein, V.A. Nikitin, N.N. Nikolaev, et al (15) This paper contains suggestions for experiments with usage of the Spin Physics Detector (SPD) at the first stage of the SPD NICA Programme developing at JINR. Double polarized pp-, dd- and pd- collisions at c.m.s. NN energies of 3.4-10 GeV, which will be accessible at the initial stage of experiments, allow one to study spin dependence of the NN interaction, search for multiquark states at double strangeness, charm and beauty thresholds, study the short-range structure of the deuteron. Double polarized pd scattering offer a possibility to test the Standard Model through the search for T-invariance violation.
V.M. Abazov, V. Abramov, L.G. Afanasyev, R.R. Akhunzyanov, A.V. Akindinov, N. Akopov, I. G. Alekseev, A.M. Aleshko, V.Yu. Alexakhin, G.D. Alexeev, M. Alexeev, A. Amoroso, I.V. Anikin, V.F. Andreev, V.A. Anosov, A.B. Arbuzov, N.I. Azorskiy, A.A. Baldin, V.V. Balandina, E.G. Baldina, et al (275) The Spin Physics Detector, a universal facility for studying the nucleon spin structure and other spin-related phenomena with polarized proton and deuteron beams, is proposed to be placed in one of the two interaction points of the NICA collider that is under construction at the Joint Institute for Nuclear Research (Dubna, Russia). At the heart of the project there is huge experience with polarized beams at JINR. The main objective of the proposed experiment is the comprehensive study of the unpolarized and polarized gluon content of the nucleon. Spin measurements at the Spin Physics Detector at the NICA collider have bright perspectives to make a unique contribution and challenge our understanding of the spin structure of the nucleon. In this document the Conceptual Design of the Spin Physics Detector is presented.