| Article | |
| Report number | arXiv:2310.19638 ; DESY-23-160 |
| Title | Exploring SMEFT couplings using the forward–backward asymmetry in neutral current Drell–Yan production at the LHC |
| Author(s) | Abdolmaleki, Hamed (IPM, Tehran ; Lorestan U.) ; Amoroso, Simone (DESY) ; Britzger, Daniel (Munich, Max Planck Inst.) ; Dattola, Filippo (DESY) ; Fiaschi, Juri (INFN, Milan Bicocca ; Milan Bicocca U.) ; Giuli, Francesco (CERN) ; Glazov, Alexander (DESY) ; Hautmann, Francesco (CERN ; Antwerp U. ; Oxford U.) ; Luszczak, Agnieszka (Cracow Tech. U.) ; Taheri Monfared, Sara (DESY) ; Olness, Fred (Southern Methodist U.) ; Vazzoler, Federico (DESY) ; Zenaiev, Oleksandr (Hamburg U.) ; Anataichuk, Andrii (Kharkov Natl. U. ; Taras Shevchenko U.) ; Moch, Sven-Olaf (Hamburg U.) |
| Publication | 2024-12-09 |
| Imprint | 2023-10-30 |
| Number of pages | 22 |
| In: | Eur. Phys. J. C 84 (2024) 1277 |
| DOI | 10.1140/epjc/s10052-024-13480-4 (publication) |
| Subject category | hep-ph ; Particle Physics - Phenomenology |
| Accelerator/Facility, Experiment | CERN LHC |
| Abstract | Neutral current Drell-Yan (DY) lepton-pair production is considered in the framework of the Standard Model Effective Field Theory (SMEFT). Using the open-source fit platform xFitter, we investigate the impact of high-statistics measurements of the neutral current DY (NCDY) forward-backward asymmetry $A_{\rm{FB}}$ near the weak boson mass scale in the present and forthcoming stages of the Large Hadron Collider (LHC). Besides recovering earlier results on the $A_{\rm{FB}}$ sensitivity to parton distribution functions, we analyze the precision determination of $Z$-boson couplings to left-handed and right-handed $u$-quarks and $d$-quarks, and explore Beyond-Standard-Model contributions using the SMEFT framework. We perform a sensitivity study and comment on the role of the $A_{\rm{FB}}$ asymmetry for the electroweak SMEFT fit and precision $Z$-boson physics at the LHC and high-luminosity HL-LHC. |
| Copyright/License | preprint: (License: arXiv nonexclusive-distrib 1.0) publication: © 2024 The Author(s) (License: CC-BY-4.0), sponsored by SCOAP³ |
Corresponding record in: Inspire
Záznam vytvorený 2023-11-28, zmenený 2024-12-19
PDF