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
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. Theasymmetry is measured in the W →μν decay mode as a function of the muon pseudorapidity usinga data sample corresponding to a total integrated luminosity of 31 pb−1. The results are compared topredictions based on next-to-leading order calculations with various parton distribution functions. Thismeasurement 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.
IdentifiersURN: urn:nbn:se:uu:diva-157221DOI: 10.1016/j.physletb.2011.05.024ISI: 000292719700003OAI: oai:DiVA.org:uu-157221DiVA: diva2:435886
ATLAS Collaboration2011-08-202011-08-202011-08-20Bibliographically approved