Measurement of the W charge asymmetry in the W → µν decay mode in pp collisions at √ s = 7 TeV with the ATLAS detector

The ATLAS collaboration

Research output: Contribution to journalArticle

Abstract

This letter reports a measurement of the muon charge asymmetry from W bosons produced in proton-proton collisions at a center-of-mass energy of 7 TeV with the ATLAS experiment at the LHC. The asymmetry is measured in the W→μν decay mode as a function of the muon pseudorapidity using a data sample corresponding to a total integrated luminosity of 31 pb−1. The results are compared to predictions based on next-to-leading-order calculations with various Parton distribution functions. This measurement provides information on u and d quark momentum fractions in the proton.
Original languageEnglish (US)
Number of pages22
JournalPhysics Letters B
StatePublished - 2011

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