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Direct measurement of the W production charge asymmetry in pp collisions at square root s=1.96 TeV.

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 sqrt[s]=1.96 TeV. We use a sample of W-->enu 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.
Publication status:
Published

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Journal:
Physical Review Letters More from this journal
Volume:
102
Issue:
18
Pages:
181801
Publication date:
2009-05-01
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Language:
English
Keywords:
Pubs id:
pubs:19563
UUID:
uuid:ccc1f5d4-05ab-4874-9605-2fec3004739c
Local pid:
pubs:19563
Source identifiers:
19563
Deposit date:
2012-12-19

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