Γ(b→ulν)/Γ(b→clν) from the end point of the lepton momentum spectrum in semileptonicBdecay

27 July 1987

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 59 (4) , 407-410
https://doi.org/10.1103/physrevlett.59.407

Abstract

We have used the measured yield of leptons near the end point of the momentum spectrum from semileptonic B decay to obtain an upper limit on Γ(b→ulν)/Γ(b→clν) and a corresponding limit on ‖

V_{ub}

‖/‖

V_{cb}

‖.

Keywords

CLEO

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