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

Authors	G. Aad [Unknown] et al. S. Bentvelsen A.P. Colijn P. de Jong L. de Nooij A.D. Doxiadis P. Ferrari H. Garitaonandia D.A.A. Geerts M. Gosselink M.S. Kayl E. Koffeman H. Lee F. Linde J. Mechnich I. Mussche J.P. Ottersbach M. Tsiakiris E. van der Kraaij R. van der Leeuw Z. van Kesteren I. van Vulpen J.C. Vermeulen M. Vreeswijk
Publication date	2011
Journal	Physics Letters B
Volume \| Issue number	701 \| 1
Pages (from-to)	31-49
Organisations	Faculty of Science (FNWI) - Institute of Physics (IoP) - Institute for High Energy Physics (IHEF)
Abstract	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→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 the u and d quark momentum fractions in the proton.
Document type	Article
Note	ATLAS Collaboration
Language	English
Published at	https://doi.org/10.1016/j.physletb.2011.05.024
Downloads	358680.pdf (Final published version)
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