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
Number of Authors: 3033
2011 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 701, no 1, 31-49 p.Article in journal (Refereed) Published
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.
W production, Charge asymmetry, Parton distribution function, Muon decay mode
IdentifiersURN: urn:nbn:se:kth:diva-37329DOI: 10.1016/j.physletb.2011.05.024ISI: 000292719700003OAI: oai:DiVA.org:kth-37329DiVA: diva2:433212
FunderSwedish Research Council
QC 20110809. Antal författare: 3033.2011-08-092011-08-092012-02-14Bibliographically approved