Precision measurement of the ratio B(t -> Wb)/B(t -> Wq)

Collaboration, D0 and Bertram, Iain and Borissov, Guennadi and Fox, Harald and Ross, Anthony and Williams, Mark and Ratoff, Peter (2011) Precision measurement of the ratio B(t -> Wb)/B(t -> Wq). Physical review letters, 107 (12). ISSN 1079-7114

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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 ttbar final states. The measurement uses data from 5.4 fb-1 of ppbar collisions collected with the D0 detector at the Fermilab Tevatron Collider. We measure R = 0.90 +/- 0.04, and we extract the CKM matrix element |Vtb| as |Vtb| = 0.95 +/- 0.02, assuming unitarity of the 3x3 CKM matrix.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Additional Information:
© 2011 American Physical Society Submitted to Phys. Rev. Lett., 7 pages
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
63663
Deposited By:
Deposited On:
24 Apr 2013 09:53
Refereed?:
Yes
Published?:
Published
Last Modified:
02 Dec 2020 01:41