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  • PhysRevD.88.091102

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

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  • The D0 Collaboration
Article number091102
<mark>Journal publication date</mark>8/11/2013
<mark>Journal</mark>Physical Review D
Issue number9
Number of pages1
Publication StatusPublished
<mark>Original language</mark>English


We present a measurement of the muon charge asymmetry from the decay of the W boson via W→μν using 7.3  fb-1 of integrated luminosity collected with the D0 detector at the Fermilab Tevatron Collider at √s=1.96  TeV. The muon charge asymmetry is presented in two kinematic regions in muon transverse momentum and event missing transverse energy: (pTμ>25  GeV, E̸T>25  GeV) and (pTμ>35  GeV, E̸T>35  GeV). The measured asymmetries are compared with theory predictions made using three parton distribution function sets. The data at pTμ>35  GeV, E̸T>35  GeV, 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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© 2013 American Physical Society