NNLO analysis of the LHC W lepton charge asymmetry data

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.Comment: 4 pages, prepared for the 23rd Rencontres de Blois, 29 May - 3 June 2011, Blois, Franc