Scientific article
Open access

Direct Measurement of the W Production Charge Asymmetry in pp Collisions at s√=1.96  TeV

ContributorsCDF Collaboration
Published inPhysical review letters, vol. 102, no. 18, 181801
Publication date2009

We present the first direct measurement of the W production charge asymmetry as a function of the W boson rapidity yW in pp collisions at s√=1.96  TeV. We use a sample of W→eν events in data from 1  fb−1 of integrated luminosity collected using the CDF II detector. In the region |yW|<3.0, this measurement is capable of constraining the ratio of up- and down-quark momentum distributions in the proton more directly than in previous measurements of the asymmetry that are functions of the charged-lepton pseudorapidity.

Citation (ISO format)
CDF Collaboration. Direct Measurement of the <em>W</em> Production Charge Asymmetry in <em>pp</em> Collisions at s√=1.96  TeV. In: Physical review letters, 2009, vol. 102, n° 18, p. 181801. doi: 10.1103/PhysRevLett.102.181801
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Article (Published version)
ISSN of the journal0031-9007

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