Abstract
The production of electroweak Z bosons that decay to neutrinos and recoil against jets with large transverse momentum p⊥ is an important background process to searches for dark matter at the Large Hadron Collider (LHC). To fully benefit from opportunities offered by the future high-luminosity LHC, the theoretical description of the pp → Z + j process should be extended to include mixed QCD-electroweak corrections. The goal of this paper is to initiate the computation of such corrections starting with the calculation of the Feynman integrals needed to describe two-loop QCD-electroweak contributions to \( q\overline{q} \)→ Z + g scattering amplitudes. Making use of the hierarchy between the large transverse momenta of the recoiling jet, relevant for heavy dark matter searches, and the Z boson mass mZ , we present the relevant master integrals as a series expansion in mZ /p⊥.
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Frellesvig, H., Kudashkin, K. & Wever, C. Two-loop QCD-EW master integrals for Z plus jet production at large transverse momentum. J. High Energ. Phys. 2020, 38 (2020). https://doi.org/10.1007/JHEP05(2020)038
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DOI: https://doi.org/10.1007/JHEP05(2020)038