Measurement of the Muon Charge Asymmetry from W Bosons Produced in pp Collisions at sqrt(s) = 7 TeV with the ATLAS detector

Details Measurement of the Muon Charge Asymmetry from W Bosons Produced in pp Collisions at sqrt(s) = 7 TeV with the ATLAS detector Measurement of the Muon Charge Asymmetry from W Bosons Produced in pp Collisions at sqrt(s) = 7 TeV with the ATLAS detector

2011-03-15

arxiv.org/abs/1103.2929v1

Phys. Lett. B 701 (2011) 31-49

Physics

High Energy Physics

High Energy Physics - Experiment

8 pages plus author list (23 pages total), 6 figure, 3 tables, submitted to Phys. Lett. B

Scientific paper

10.1016/j.physletb.2011.05.024

This letter reports a measurement of the muon charge asymmetry from W Boson 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 Boson to muon 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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