Direct Measurement of the W Production Charge Asymmetry in p anti-p Collisions at s**(1/2) = 1.96-TeV
Journal Article
·
· Submitted to Phys.Rev.Lett.
We present the first direct measurement of the W production charge asymmetry as a function of the W boson rapidity y{sub W} in p{bar p} collisions at {radical}s = 1.96 TeV. We use a sample of W {yields} e{nu} events in data from 1 fb{sup -1} of integrated luminosity collected using the CDF II detector. In the region |y{sub W}| < 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 a function of the charged-lepton pseudorapidity.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 946543
- Report Number(s):
- FERMILAB-PUB-09-017-E; arXiv eprint number arXiv:0901.2169; TRN: US0900974
- Journal Information:
- Submitted to Phys.Rev.Lett., Vol. 102, Issue 18; ISSN 0031--9007
- Country of Publication:
- United States
- Language:
- English
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