Precision measurements of the Lepton-Charge and Forward-Backward Drell-Yan Asymmetries to Enhance the Sensitivity to Broad Resonances of New Gauge Sectors

TL;DR

This paper demonstrates that precise measurements of lepton-charge and forward-backward asymmetries in Drell-Yan processes can significantly improve the sensitivity to new gauge bosons like W' and Z', enabling tighter constraints or potential discoveries.

Contribution

It introduces a method to use asymmetry measurements to reduce uncertainties in Parton Distribution Functions, enhancing BSM search sensitivity.

Findings

Sensitivity to W' and Z' bosons is substantially increased.

Uncertainties in Parton Distribution Functions are reduced near gauge boson peaks.

Stronger limits on new gauge bosons can be established with improved asymmetry measurements.

Abstract

We study the impact of future measurements of lepton-charge and forward-backward asymmetries in Drell-Yan processes in regions of transverse and invariant masses near the Standard Model gauge bosons peaks to improve the Parton Distribution Functions uncertainties. We study the implications on $W^{'}$ and $Z^{'}$ searches following the reduction of these uncertainties. We find that the sensitivity to the Beyond the Standard Model states is greatly increased with respect to the case of base Parton Distribution Functions sets, thereby enabling one to set more stringent limits on (or indeed discover) such new particles.