NNLO analysis of the LHC W lepton charge asymmetry data

TL;DR

This paper applies a reweighting method to incorporate LHC W lepton asymmetry data into NNLO PDF analysis, confirming that these data significantly reduce uncertainties in light quark PDFs at medium and small-x.

Contribution

It introduces a reweighting approach for NNLO PDF analysis using LHC W asymmetry data, providing the first solid constraints from LHC measurements.

Findings

LHC W asymmetry data reduce PDF uncertainties in light quarks.

First solid constraints on PDFs from LHC data at NNLO.

Reweighting method effectively incorporates new data into PDF analysis.

Abstract

The reweighting method presented in earlier publications is applied for incorporating the LHC W lepton asymmetry data published in 2010 into the NNPDF2.1 NNLO analysis. We confirm the result of the NLO analysis which indicated that these data reduce PDF uncertainties of light quarks in the medium and small-x region, providing the first solid constraints on PDFs from LHC data.