Measurement of beta (t -> Wb)/beta(t -> Wq) at root s=1.96 TeV
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
20/05/2014
20/05/2014
24/08/2006
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Resumo |
We present the measurement of R = B(t -> Wb)/B(t -> Wq) in pp collisions at root s = 1.96 TeV, using 230 pb(-1) of data collected by the DO experiment at the Fermilab Tevatron Collider. We fit simultaneously R and the number (N-tt) of selected top quark pairs (tt), to the number of identified b-quark jets in events with one electron or one muon, three or more jets, and high transverse energy imbalance. To improve sensitivity, kinematical properties of events with no identified b-quark jets are included in the fit. We measure R = 1.03(-0.17)(0.19) (stat + syst), in good agreement with the standard model. We set lower limits of R > 0.61 and vertical bar V-tb vertical bar > 0.78 at 95% confidence level. (c) 2006 Elsevier B.V. All rights reserved. |
Formato |
616-622 |
Identificador |
http://dx.doi.org/10.1016/j.physletb.2006.07.019 Physics Letters B. Amsterdam: Elsevier B.V., v. 639, n. 6, p. 616-622, 2006. 0370-2693 http://hdl.handle.net/11449/23828 10.1016/j.physletb.2006.07.019 WOS:000239858600006 |
Idioma(s) |
eng |
Publicador |
Elsevier B.V. |
Relação |
Physics Letters B |
Direitos |
closedAccess |
Tipo |
info:eu-repo/semantics/article |