Precision Measurement of the Ratio B(t -> Wb)/B(t -> Wq) and Extraction of V-tb
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
30/09/2013
20/05/2014
30/09/2013
20/05/2014
15/09/2011
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Resumo |
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) 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 t (t) over bar final states. The measurement uses data from 5: 4 fb(-1) of p (p) over bar 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 vertical bar V-tb vertical bar as vertical bar V-tb vertical bar = 0.95 +/- 0.02, assuming unitarity of the 3 x 3 CKM matrix. |
Formato |
7 |
Identificador |
http://dx.doi.org/10.1103/PhysRevLett.107.121802 Physical Review Letters. College Pk: Amer Physical Soc, v. 107, n. 12, p. 7, 2011. 0031-9007 http://hdl.handle.net/11449/24582 10.1103/PhysRevLett.107.121802 WOS:000294929600001 WOS000294929600001.pdf |
Idioma(s) |
eng |
Publicador |
Amer Physical Soc |
Relação |
Physical Review Letters |
Direitos |
closedAccess |
Tipo |
info:eu-repo/semantics/article |