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Measurement of the W Charge Asymmetry in the $W\to\mu\nu$ Decay Mode in pp Collisions at $\sqrt{s}=7$ TeV with the ATLAS Detector
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).
Stockholm University, Faculty of Science, Department of Physics.
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).
Stockholm University, Faculty of Science, Department of Physics.
2011 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 701, no 1, 31-49 p.Article in journal (Refereed) Published
##### Abstract [en]

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 Wμν 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.

##### Place, publisher, year, edition, pages
2011. Vol. 701, no 1, 31-49 p.
##### Keyword [en]
W production, Charge asymmetry, Parton distribution function, Muon decay mode
##### National Category
Subatomic Physics
Physics
##### Identifiers
ISI: 000292719700003OAI: oai:DiVA.org:su-63001DiVA: diva2:446321
Atlas
##### Funder
Swedish Research CouncilKnut and Alice Wallenberg Foundation
##### Note
Publikationen har totalt 3044 författare, G. Aad et al.Available from: 2011-10-06 Created: 2011-10-06 Last updated: 2012-01-17Bibliographically approved

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Åsman, BarbroBohm, ChristianClément, ChristopheEriksson, DanielGellerstedt, KarlHellman, StenHidvégi, AttilaHolmgren, Sven-OlofJohansen, MarianneJohansson, ErikJon-And, KerstinLundberg, JohanMilstead, DavidMoa, TorbjörnNordkvist, BjörnOhm, ChristianPapadelis, ArasSelldén, BjörnSilverstein, SamuelSjölin, JörgenStrandberg, SaraTylmad, MajaYang, Zhaoyu
##### By organisation
Department of PhysicsThe Oskar Klein Centre for Cosmo Particle Physics (OKC)
##### In the same journal
Physics Letters B
##### On the subject
Subatomic Physics

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