Inclusive Semileptonic B Decays at BABAR

Details Inclusive Semileptonic B Decays at BABAR Inclusive Semileptonic B Decays at BABAR

2002-04-03

arxiv.org/abs/hep-ex/0204001v1

Physics

High Energy Physics

High Energy Physics - Experiment

6 pages, 1 postscript figure, submitted to EPS 2001

Scientific paper

We present measurements of the inclusive semileptonic branching fractions of charged and neutral B mesons using 20.6 fb-1 of data measured at the Upsilon(4S) with the BABAR detector. Events are tagged with a fully reconstructed hadronic decay of a B meson. The correlation between the flavor of the tag B meson and the electron charge allows the separation of prompt semileptonic B decays and cascade semileptonic charm decays. We obtain the preliminary inclusive semileptonic branching fraction of charged B mesons b+ = 0.103+/-0.006+/-0.005, neutral B mesons b0 = 0.104+/-0.008+/-0.005, their average b = 0.104+/-0.005+/-0.004, and their ratio b+/b0 = 0.99+/-0.10+/-0.03.

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