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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.ORCID iD: 0000-0003-3867-0336
University of Chicago.ORCID iD: 0000-0002-8913-0981
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Number of Authors: 30332011 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 701, no 1, p. 31-49Article 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, p. 31-49
Keywords [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: 000292719700003Scopus ID: 2-s2.0-85041751927OAI: oai:DiVA.org:kth-37329DiVA, id: diva2:433212
Funder
Swedish Research Council
Note

QC 20110809. Antal författare: 3033.

Available from: 2011-08-09 Created: 2011-08-09 Last updated: 2019-12-04Bibliographically approved

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Strandberg, Jonas

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