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Title: Measurement of the W charge asymmetry in the pp collisions at √s = 7 TeV with the ATLAS detector

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 → 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. The measurement provides information on the u and d quark momentum fractions in the proton.
Authors:
 [1]
  1. et al.
Publication Date:
Grant/Contract Number:
FG02-95ER40893
Type:
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 701; Journal Issue: 1; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Univ. of Pennsylvania, Philadelphia, PA (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Orgs:
ATLAS Collaboration
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ASYMMETRY; CERN LHC; D QUARKS; DISTRIBUTION FUNCTIONS; EXPERIMENTAL DATA; LUMINOSITY; MUONS; PARTICLE DECAY; PARTICLE RAPIDITY; PROTON-PROTON INTERACTIONS; TEV RANGE; W MINUS BOSONS; W PLUS BOSONS; muon charge asymmetry
OSTI Identifier:
1213823
Alternate Identifier(s):
OSTI ID: 1196002