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.

T., A., H., A., A., A., M. G., A., P., A., S. R., A., 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

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
T., A., H., A., A., A., M. G., A., P., A., S. R., A., 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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