  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.
