Direct Measurement of the W Production Charge Asymmetry in p(p)over-bar Collisions at root s = 1.96 TeV

Direct Measurement of the W Production Charge Asymmetry in p(p)over-bar Collisions at root s = 1.96 TeV

We present the first direct measurement of the W production charge asymmetry as a function of the W boson rapidity yW in p(p)over-bar collisions at √s=1.96  TeV. We use a sample of W→eν events in data from 1  fb[superscript -1] of integrated luminosity collected using the CDF II detector. In the reg...

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Bibliographic Details
Main Authors: Paus, Christoph M. E. (Contributor), Gomez-Ceballos, Guillelmo (Contributor), Henderson, C. (Contributor), Choudalakis, Georgios (Contributor), Knuteson, Bruce O. (Contributor), Hahn, Kristian Allan (Contributor), Goncharov, Maxim (Contributor), Makhoul, K. (Contributor), Xie, Si (Contributor), Bauer, Gerry P. (Contributor)
Other Authors: Massachusetts Institute of Technology. Laboratory for Nuclear Science (Contributor)
Format: Article
Language:English
Published: American Physical Society, 2010-01-15T15:26:36Z.
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Summary:We present the first direct measurement of the W production charge asymmetry as a function of the W boson rapidity yW in p(p)over-bar collisions at √s=1.96  TeV. We use a sample of W→eν events in data from 1  fb[superscript -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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