2021/03/31 by Juri Fiaschi, F. Giuli, Francesco Giuli +3
Physics and Astronomy · #Asymmetry #Drell–Yan process #Electroweak interaction #Hadron #High-Energy Particle Collisions Research #Invariant mass #Large Hadron Collider #Lepton #Neutral current #Neutrino #Nuclear physics #Observable #Particle physics #Particle physics theoretical and experimental studies #Parton #Physics #Physics beyond the Standard Model #Quantum Chromodynamics and Particle Interactions #Vector boson #hep-ph
paper · pdf · doi:10.1016/j.nuclphysb.2021.115444
16 pages, 17 figures
openalex publication_date 2021/05/24 · arxiv created 2021/05/25 · arxiv updated 2021/05/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.