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

G. Aad; B. Abbott; J. Abdallah; A. A. Abdelalim; A. Abdesselam; O. Abdinov; B. Abi; M. Abolins; H. Abramowicz; H. Abreu; E. Acerbi; B. S. Acharya; D. L. Adams; T. N. Addy; J. Adelman; M. Aderholz; S. Adomeit; P. Adragna; T. Adye; S. Aefsky; J. A. Aguilar-Saavedra; M. Aharrouche; S. P. Ahlen; F. Ahles; A. Ahmad; M. Ahsan; G. Aielli; T. Akdogan; T. P A Åkesson; G. Akimoto; A. V. Akimov; A. Akiyama; M. S. Alam; M. A. Alam; S. Albrand; M. Aleksa; I. N. Aleksandrov; F. Alessandria; C. Alexa; G. Alexander; G. Alexandre; T. Alexopoulos; M. Alhroob; M. Aliev; G. Alimonti; J. Alison; M. Aliyev; P. P. Allport; S. E. Allwood-Spiers; N. Ruckstuhl; ATLAS Collaboration

doi:10.1016/j.physletb.2011.05.024

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

G. Aad, B. Abbott, J. Abdallah, A. A. Abdelalim, A. Abdesselam, O. Abdinov, B. Abi, M. Abolins, H. Abramowicz, H. Abreu, E. Acerbi, B. S. Acharya, D. L. Adams, T. N. Addy, J. Adelman, M. Aderholz, S. Adomeit, P. Adragna, T. Adye, S. AefskyJ. A. Aguilar-Saavedra, M. Aharrouche, S. P. Ahlen, F. Ahles, A. Ahmad, M. Ahsan, G. Aielli, T. Akdogan, T. P A Åkesson, G. Akimoto, A. V. Akimov, A. Akiyama, M. S. Alam, M. A. Alam, S. Albrand, M. Aleksa, I. N. Aleksandrov, F. Alessandria, C. Alexa, G. Alexander, G. Alexandre, T. Alexopoulos, M. Alhroob, M. Aliev, G. Alimonti, J. Alison, M. Aliyev, P. P. Allport, S. E. Allwood-Spiers, N. Ruckstuhl, ATLAS Collaboration

Physics and Astronomy (Twin Cities)

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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.

Original language	English (US)
Pages (from-to)	31-49
Number of pages	19
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	701
Issue number	1
DOIs	https://doi.org/10.1016/j.physletb.2011.05.024
State	Published - Jan 1 2011

Keywords

Charge asymmetry
Muon decay mode
Parton distribution function
W production

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Aad, G., Abbott, B., Abdallah, J., Abdelalim, A. A., Abdesselam, A., Abdinov, O., Abi, B., Abolins, M., Abramowicz, H., Abreu, H., Acerbi, E., Acharya, B. S., Adams, D. L., Addy, T. N., Adelman, J., Aderholz, M., Adomeit, S., Adragna, P., Adye, T., ... ATLAS Collaboration (2011). Measurement of the W charge asymmetry in the W →µν decay mode in pp collisions at √s = 7 TeV with the ATLAS detector. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 701(1), 31-49. https://doi.org/10.1016/j.physletb.2011.05.024

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, Ruckstuhl, N & ATLAS Collaboration 2011, 'Measurement of the W charge asymmetry in the W →µν decay mode in pp collisions at √s = 7 TeV with the ATLAS detector', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 701, no. 1, pp. 31-49. https://doi.org/10.1016/j.physletb.2011.05.024

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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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AU - Aad, G.

AU - Abbott, B.

AU - Abdallah, J.

AU - Abdelalim, A. A.

AU - Abdesselam, A.

AU - Abdinov, O.

AU - Abi, B.

AU - Abolins, M.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Acerbi, E.

AU - Acharya, B. S.

AU - Adams, D. L.

AU - Addy, T. N.

AU - Adelman, J.

AU - Aderholz, M.

AU - Adomeit, S.

AU - Adragna, P.

AU - Adye, T.

AU - Aefsky, S.

AU - Aguilar-Saavedra, J. A.

AU - Aharrouche, M.

AU - Ahlen, S. P.

AU - Ahles, F.

AU - Ahmad, A.

AU - Ahsan, M.

AU - Aielli, G.

AU - Akdogan, T.

AU - Åkesson, T. P A

AU - Akimoto, G.

AU - Akimov, A. V.

AU - Akiyama, A.

AU - Alam, M. S.

AU - Alam, M. A.

AU - Albrand, S.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alessandria, F.

AU - Alexa, C.

AU - Alexander, G.

AU - Alexandre, G.

AU - Alexopoulos, T.

AU - Alhroob, M.

AU - Aliev, M.

AU - Alimonti, G.

AU - Alison, J.

AU - Aliyev, M.

AU - Allport, P. P.

AU - Allwood-Spiers, S. E.

AU - Ruckstuhl, N.

AU - ATLAS Collaboration

PY - 2011/1/1

Y1 - 2011/1/1

N2 - 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.

AB - 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.

KW - Charge asymmetry

KW - Muon decay mode

KW - Parton distribution function

KW - W production

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U2 - 10.1016/j.physletb.2011.05.024

DO - 10.1016/j.physletb.2011.05.024

M3 - Article

SN - 0370-2693

VL - 701

SP - 31

EP - 49

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1

ER -

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

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Keywords

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