PS01 Heavy Flavour Physics
Inclusive semileptonic B decays at BABAR
Stanford Linear Accelerator Center, Stanford University, Stanford, CA 94309, USA
Accepted: 10 November 2003
Published online: 26 November 2003
We report updates on two analyses of inclusive semileptonic B decays based on a dataset of 89 million events recorded with the BABAR detector at the Υ(4S) resonance. Events are selected by fully reconstructing the decay of one B meson and identifying a charged lepton from the decay of the other meson. In the first analysis, the measurement of the first and second moment of the hadronic mass distribution in Cabibbo-favored decays allows for the determination of the nonperturbative parameters and λ 1 of Heavy Quark Effective Theory (HQET) and |V cb |. In the second analysis, the hadronic mass distribution is used to measure the inclusive charmless semileptonic branching fraction and to determine |V ub |.
PACS: 13.20.He Decays of beauty mesons – 12.39.Hg Heavy quark effective theory
© Società Italiana di Fisica, Springer-Verlag, 2004