We present the first measurement of the ratio of branching fractions R equivalent to B(t --> Wb)/B(t --> Wq) from pa collisions at roots = 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(-0.24)(+0.31)(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 element V-tb under the assumption of three generations and unitarity.

Affolder, T., Akimoto, H., Akopian, A., Albrow, M.G., Amaral, P., Amendolia, S.R., et al. (2001). First measurement of the ratio B(t -> Wb)/B(t -> Wq) and associated limit on the Cabibbo-Kobayashi-Maskawa element vertical bar V-tb vertical bar. PHYSICAL REVIEW LETTERS, 86(15), 3233-3238 [10.1103/PhysRevLett.86.3233].

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

A. Cerri;PAOLETTI, RICCARDO;
2001-01-01

Abstract

We present the first measurement of the ratio of branching fractions R equivalent to B(t --> Wb)/B(t --> Wq) from pa collisions at roots = 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(-0.24)(+0.31)(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 element V-tb under the assumption of three generations and unitarity.
2001
Affolder, T., Akimoto, H., Akopian, A., Albrow, M.G., Amaral, P., Amendolia, S.R., et al. (2001). First measurement of the ratio B(t -> Wb)/B(t -> Wq) and associated limit on the Cabibbo-Kobayashi-Maskawa element vertical bar V-tb vertical bar. PHYSICAL REVIEW LETTERS, 86(15), 3233-3238 [10.1103/PhysRevLett.86.3233].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/39634
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