On direct measurement of the W production charge asymmetry at the LHC

TL;DR

This paper discusses the potential for directly measuring the W production charge asymmetry at the LHC, proposing a modified method and comparing its effectiveness to lepton charge asymmetry measurements.

Contribution

It introduces a modified measurement method for W charge asymmetry at the LHC and evaluates its sensitivity relative to lepton asymmetry measurements.

Findings

Direct measurement less effective for constraining PDFs than lepton asymmetry.

Proposed method adapts Tevatron techniques for LHC conditions.

Sensitivity analysis shows limited advantage of direct measurement.

Abstract

The prospects for making a direct measurement of the W production charge asymmetry at the LHC are discussed. A modification to the method used at the Tevatron is proposed for measurements at the LHC. The expected sensitivity for such a measurement to parton distribution functions is compared to that for a measurement of the lepton charge asymmetry. The direct measurement approach is found to be less useful for placing constraints on parton distribution functions at the LHC than a measurement of the lepton charge asymmetry.