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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

Affolder, T; Akimoto, H; Akopian, A; Albrow, MG; Amaral, P; Amendolia, SR; Amidei, D; ... CDF Collaboration, The; + view all (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. Green open access

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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.

Type: Article
Title: 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
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.86.3233
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.86.3233
Language: English
Additional information: © 2001 The American Physical Society
Keywords: PRODUCTION CROSS-SECTION, SILICON VERTEX DETECTOR, TOP-QUARK PRODUCTION, COLLIDER DETECTOR, (P)OVER-BAR-P COLLISIONS, P(P)OVER-BAR COLLISIONS, ROOT-S=1.8 TEV, FERMILAB, PHYSICS, SEARCH
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/409146
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