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Simultaneous measurement of the ratio R=B(t --> Wb)/B(t --> Wq) and the top-quark pair production cross section with the D0 detector at sqrt(s) = 1.96 TeV.

Abstract:

We present the first simultaneous measurement of the ratio of branching fractions, R=B(t --> Wb)/B(t --> Wq), with q being a d, s, or b quark, and the top-quark pair production cross section sigma(tt[over]) in the lepton plus jets channel using 0.9 fb(-1) of pp[over] collision data at sqrt(s)=1.96 TeV collected with the D0 detector. We extract R and sigma(tt[over]) by analyzing samples of events with 0, 1, and > or =2 identified b jets. We measure R=0.97(+0.09)/(-0.08)(stat+syst) and...

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Journal:
Physical review letters
Volume:
100
Issue:
19
Pages:
192003
Publication date:
2008-05-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:2b5799a8-3cb4-4bce-8f2d-7efcc394297d
Source identifiers:
180053
Local pid:
pubs:180053
Language:
English

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