Direct Measurement of the <em><strong>W</strong></em> Production Charge Asymmetry in <em>pp</em> Collisions at s√=1.96 TeV
- CDF Collaboration
Publication date
January 2009
DOI Publisher
American Physical Society (APS)Abstract
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
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