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arXiv · hep-ex/0312053

|Vcb|, |Vub|, and Hqet at Cleo

Karl M. Ecklund
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Abstract

I report results from the CLEO collaboration on semileptonic B decays, highlighting measurements of the Cabibbo-Kobayashi-Maskawa matrix elements Vcb and Vub. I describe the techniques used to obtain the recent improvements in precision for these measurements, including the use of the b -> s gamma photon spectrum to reduce hadronic uncertainties in semileptonic B decays. I also report new measurements of Vcb using the inclusive semileptonic branching fraction BF(B -> X e nu) and of Vub through study of the q^2 dependence of B -> pi l nu and B -> rho l nu.

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Karl M. Ecklund. 2003-12-19. |Vcb|, |Vub|, and Hqet at Cleo. https://doi.org/10.1140/epjcd%2Fs2003-03-108-3

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