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

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

2003-12-19

arxiv.org/abs/hep-ex/0312053v1

Eur.Phys.J.C33:s210-s212,2004

Physics

High Energy Physics

High Energy Physics - Experiment

3 pages, 3 figures, uses svjour.cls, submitted to Proceedings of EPS 2003

Scientific paper

10.1140/epjcd/s2003-03-108-3

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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