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Measurement of the muon charge asymmetry in pp¯W+Xμν+X events at s=1.96TeV

V. M. Abazov et al. (The D0 Collaboration)
Phys. Rev. D 88, 091102(R) – Published 8 November 2013

Abstract

We present a measurement of the muon charge asymmetry from the decay of the W boson via Wμν using 7.3fb1 of integrated luminosity collected with the D0 detector at the Fermilab Tevatron Collider at s=1.96TeV. The muon charge asymmetry is presented in two kinematic regions in muon transverse momentum and event missing transverse energy: (pTμ>25GeV, T>25GeV) and (pTμ>35GeV, T>35GeV). The measured asymmetries are compared with theory predictions made using three parton distribution function sets. The data at pTμ>35GeV, T>35GeV, and larger values of |ημ| favor an increased d(x)/u(x) ratio at higher values of x than is predicted.

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  • Received 11 September 2013

DOI:https://doi.org/10.1103/PhysRevD.88.091102

© 2013 American Physical Society

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Vol. 88, Iss. 9 — 1 November 2013

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