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arXiv · 1309.2591

Measurement of the muon charge asymmetry in ppbar to W + X to mu nu + X events at sqrt{s} = 1.96 TeV

D0 Collaboration
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Abstract

We present a measurement of the muon charge asymmetry from the decay of the $W$ boson via W to mu nu using 7.3 fb^{-1} of integrated luminosity collected with the D0 detector at the Fermilab Tevatron Collider at sqrt{s} = 1.96 TeV. The muon charge asymmetry is presented in two kinematic regions in muon transverse momentum and event missing transverse energy: (p^μ_{T} > 25 GeV, \met > 25 GeV) and (p^μ_{T} > 35 GeV, \met > 35 GeV). The measured asymmetries are compared with theory predictions made using three parton distribution function sets. The predictions do not describe the data well for p^μ_{T} > 35 GeV, \met > 35 GeV, and larger values of muon pseudorapidity.

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D0 Collaboration. 2013-09-10. Measurement of the muon charge asymmetry in ppbar to W + X to mu nu + X events at sqrt{s} = 1.96 TeV. https://doi.org/10.1103/physrevd.88.091102

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