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Compact Muon Solenoid
LHC, CERN

CMS-PAS-SMP-12-021
Muon charge asymmetry in inclusive W production at 7 TeV
Abstract: We report on a measurement of the muon charge asymmetry in inclusive ppW+X production at s=7 TeV. The data sample corresponds to an integrated luminosity of 4.7 fb1 recorded by the CMS detector at the LHC. With a sampleof more than 20 million Wμν events, the statistical precision is greatly improved in comparison to previous measurements. These new results provide additional constraints on the Parton Distribution Functions~(PDFs) in the proton in the Bj\"{o}rken parameter x range from 0.001 to 0.1.
Compact Muon Solenoid
LHC, CERN