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Measurement of the W charge asymmetry in the W -> mu nu decay mode in pp collisions at root s=7 TeV with the ATLAS detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
University of Chicago.ORCID iD: 0000-0002-8913-0981
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Number of Authors: 3033
2011 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, 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 W -> mu nu 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
Identifiers
URN: urn:nbn:se:kth:diva-37329DOI: 10.1016/j.physletb.2011.05.024ISI: 000292719700003OAI: oai:DiVA.org:kth-37329DiVA: diva2:433212
Funder
Swedish Research Council
Note
QC 20110809. Antal författare: 3033.Available from: 2011-08-09 Created: 2011-08-09 Last updated: 2017-12-08Bibliographically approved

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Strandberg, Jonas

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