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

CollaborationWith : Clark, Allan Geoffrey / Garcia Navarro, Jose Enrique / Vallecorsa, Sofia / Wu, Xin
Published in Physical Review Letters. 2009, vol. 102, no. 18, p. 181801
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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CDF COLLABORATION. Direct Measurement of the W Production Charge Asymmetry in pp Collisions at s√=1.96  TeV. In: Physical Review Letters, 2009, vol. 102, n° 18, p. 181801. https://archive-ouverte.unige.ch/unige:38559

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Deposited on : 2014-07-08

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