| Article | |
| Report number | arXiv:2401.15682 ; FR-PHENO-2024-01 ; CERN-TH-2024-001 |
| Title | Mixed NNLO QCD × electroweak corrections to single-Z production in pole approximation: differential distributions and forward-backward asymmetry |
| Related title | Mixed NNLO QCD $\times$ electroweak corrections to single-Z production in pole approximation: differential distributions and forward-backward asymmetry |
| Author(s) | Dittmaier, Stefan (Freiburg U.) ; Huss, Alexander (CERN) ; Schwarz, Jan (Freiburg U.) |
| Publication | 2024-05-14 |
| Imprint | 2024-01-28 |
| Number of pages | 42 |
| In: | JHEP 2405 (2024) 170 |
| DOI | 10.1007/JHEP05(2024)170 |
| Subject category | hep-ph ; Particle Physics - Phenomenology |
| Abstract | Radiative corrections in pole approximation, which are based on the leading contribution in a systematic expansion of amplitudes about resonance poles, naturally decompose into factorizable corrections attributed to the production or decay of the resonance and non-factorizable corrections induced by soft photon (or gluon) exchange between those subprocesses. In this paper we complete an earlier calculation of mixed QCD$\times$electroweak corrections of $\mathcal{O}(\alpha_s\alpha)$ to the neutral-current Drell-Yan cross section in pole approximation by including the previously neglected corrections that are solely related to the Z-boson production process. We present numerical results both for differential distributions and for the forward-backward asymmetry differential in the lepton-pair invariant mass, which is the key observable in the measurement of the effective weak mixing angle at the LHC. Carefully disentangling the various types of factorizable and non-factorizable corrections, we find (as expected in our earlier work) that the by far most important contribution at $\mathcal{O}(\alpha_s\alpha)$ originates from the interplay of initial-state QCD corrections and electroweak final-state corrections. |
| Copyright/License | preprint: (License: arXiv nonexclusive-distrib 1.0) publication: © 2024 The Authors (License: CC-BY-4.0), sponsored by SCOAP³ |
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