Measurement of the W charge asymmetry in the W→μν decay mode in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

5 Laboratoire de Physique Corpusculaire
LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand
10 APC - Neutrinos
LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies, APC (UMR_7164) - AstroParticule et Cosmologie
Abstract : 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→μν 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.
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Journal articles

http://hal.in2p3.fr/in2p3-00577025
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Submitted on : Wednesday, March 16, 2011 - 8:40:12 AM
Last modification on : Thursday, December 16, 2021 - 2:11:29 PM

Citation

G. Aad, S. Albrand, M.L. Andrieux, B. Clement, J. Collot, et al.. Measurement of the W charge asymmetry in the W→μν decay mode in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector. Physics Letters B, Elsevier, 2011, 701, pp.31-49. ⟨10.1016/j.physletb.2011.05.024⟩. ⟨in2p3-00577025⟩

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