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First measurement of the ratio B(t --> Wb)/B(t --> Wq) and associated limit on the Cabibbo-Kobayashi-Maskawa element /V(tb)/.

Abstract:

We present the first measurement of the ratio of branching fractions R identical withB(t-->Wb)/B(t-->Wq) from p_p collisions at sqrt[s] = 1.8 TeV. The data set corresponds to 109 pb(-1) of data recorded by the Collider Detector at Fermilab during the 1992-95 Tevatron run. We measure R = 0.94(+0.31)(-0.24)(stat+syst) or R>0.61 (0.56) at 90% (95)% C.L., in agreement with the standard model predictions. This measurement yields a limit on the Cabibbo-Kobayashi-Maskawa quark mixing matrix...

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Publisher copy:
10.1103/physrevlett.86.3233

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Journal:
Physical review letters
Volume:
86
Issue:
15
Pages:
3233-3238
Publication date:
2001-04-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:c93d3aa9-ac67-496e-86ab-20db8d60f1d2
Source identifiers:
16143
Local pid:
pubs:16143
Language:
English

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