Abazov, V. M. ; Mondal, N. K. ; et., al (2011) Precision measurement of the ratio B(t→Wb)/B(t→Wq) and extraction of Vtb Physical Review Letters, 107 . 121802_1-121802_7. ISSN 0031-9007
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Official URL: http://prl.aps.org/abstract/PRL/v107/i12/e121802
Related URL: http://dx.doi.org/10.1103/PhysRevLett.107.121802
Abstract
We present a measurement of the ratio of top quark branching fractions R=B(t→Wb)/B(t→Wq), where q can be a d, s, or b quark, in the lepton+jets and dilepton tt̅ final states. The measurement uses data from 5.4fb-1 of pp̅ collisions collected with the D0 detector at the Fermilab Tevatron Collider. We measure R=0.90±0.04, and we extract the Cabibbo-Kobayashi-Maskawa (CKM) matrix element |Vtb| as |Vtb|=0.95±0.02, assuming unitarity of the 3×3 CKM matrix.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 92379 |
| Deposited On: | 30 May 2012 09:26 |
| Last Modified: | 30 May 2012 09:26 |
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