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

  • Author(s): Aad, G
  • Abbott, B
  • Abdallah, J
  • Abdelalim, AA
  • Abdesselam, A
  • Abdinov, O
  • Abi, B
  • Abolins, M
  • Abramowicz, H
  • Abreu, H
  • Acerbi, E
  • Acharya, BS
  • Adams, DL
  • Addy, TN
  • Adelman, J
  • Aderholz, M
  • Adomeit, S
  • Adragna, P
  • Adye, T
  • Aefsky, S
  • Aguilar-Saavedra, JA
  • Aharrouche, M
  • Ahlen, SP
  • Ahles, F
  • Ahmad, A
  • Ahsan, M
  • Aielli, G
  • Akdogan, T
  • Åkesson, TPA
  • Akimoto, G
  • Akimov, AV
  • Akiyama, A
  • Alam, MS
  • Alam, MA
  • Albrand, S
  • Aleksa, M
  • Aleksandrov, IN
  • Alessandria, F
  • Alexa, C
  • Alexander, G
  • Alexandre, G
  • Alexopoulos, T
  • Alhroob, M
  • Aliev, M
  • Alimonti, G
  • Alison, J
  • Aliyev, M
  • Allport, PP
  • Allwood-Spiers, SE
  • Almond, J
  • Aloisio, A
  • Alon, R
  • Alonso, A
  • Alviggi, MG
  • Amako, K
  • Amaral, P
  • Amelung, C
  • Ammosov, VV
  • Amorim, A
  • Amorós, G
  • Amram, N
  • Anastopoulos, C
  • Andeen, T
  • Anders, CF
  • Anderson, KJ
  • Andreazza, A
  • Andrei, V
  • Andrieux, ML
  • Anduaga, XS
  • Angerami, A
  • Anghinolfi, F
  • Anjos, N
  • Annovi, A
  • Antonaki, A
  • Antonelli, M
  • Antonelli, S
  • Antonov, A
  • Antos, J
  • Anulli, F
  • Aoun, S
  • Aperio Bella, L
  • Apolle, R
  • Arabidze, G
  • Aracena, I
  • Arai, Y
  • Arce, ATH
  • Archambault, JP
  • Arfaoui, S
  • Arguin, JF
  • Arik, E
  • Arik, M
  • Armbruster, AJ
  • Arnaez, O
  • Arnault, C
  • Artamonov, A
  • Artoni, G
  • Arutinov, D
  • Asai, S
  • Asfandiyarov, R
  • Ask, S
  • et al.

Published Web Location

https://doi.org/10.1016/j.physletb.2011.05.024Creative Commons 'BY' version 4.0 license
Abstract

© 2011 CERN 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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