6533b859fe1ef96bd12b7ea2

RESEARCH PRODUCT

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

Atlas CollaborationVasiliki MitsouAntonio Ferrer SoriaSusana Cabrera UrbánMaría Victoria Castillo GiménezJuan Antonio Valls FerrerJuan A. Fuster VerdúEduardo Ros MartínezLuca FioriniYesenia Hernández JiménezCarlos Lacasta LlácerSantiago González De La HozJosé Salt CairolsEmilio Higón RodríguezCarmen García GarcíaSalvador Martí GarcíaMiguel Villaplana Pérez

subject

Physics::Instrumentation and DetectorsHigh Energy Physics::PhenomenologyPhysics::Accelerator PhysicsHigh Energy Physics::ExperimentFísica nuclearNuclear ExperimentDetectors de radiació

description

This Letter reports a measurement of the muon charge asymmetry from W bosons produced in proton-proton collisions at a centre-of-mass energy of 7 TeV with the ATLAS experiment at the LHC. The asymmetry is measured in the W -> μnu 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 the u and d quark momentum fractions in the proton.

yearjournalcountryeditionlanguage
2011-01-01
10.1016/j.physletb.2011.05.024http://hdl.handle.net/10550/34450