Lepton-charge and forward-backward asymmetries in Drell-Yan processes for precision electroweak measurements and new physics searches

Fiaschi, J ORCID: 0000-0003-0860-9569, Giuli, F, Hautmann, F and Moretti, S (2021) Lepton-charge and forward-backward asymmetries in Drell-Yan processes for precision electroweak measurements and new physics searches. NUCLEAR PHYSICS B, 968. p. 115444.

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Abstract

Precision determinations of Standard Model (SM) Electro-Weak (EW) parameters at the Large Hadron Collider (LHC) are dominated by uncertainties due to Parton Distribution Functions (PDFs). Reweighting and profiling techniques are routinely employed to treat this. We explore approaches based on combining measurements of charged current and neutral current Drell-Yan (DY) asymmetries to improve PDF uncertainties. We present the results of a numerical analysis performed with the open-source platform xFitter. PDF uncertainties are examined for lepton-charge and forward-backward asymmetries in regions of transverse and invariant masses near the vector-boson peak, based on LHC Run III and HL-LHC luminosity scenarios. We discuss the complementarity of the asymmetries in reducing PDF uncertainties in observables relevant to both SM and Beyond the SM (BSM) physics.

Item Type:	Article
Additional Information:	16 pages, 17 figures
Uncontrolled Keywords:	hep-ph, hep-ph
Divisions:	Faculty of Science and Engineering > School of Physical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	12 May 2022 14:18
Last Modified:	18 Jan 2023 21:03
DOI:	10.1016/j.nuclphysb.2021.115444
Open Access URL:	https://www.sciencedirect.com/science/article/pii/...
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3154666