Inclusive Semileptonic B Decays at BABAR

نویسنده

  • Urs Langenegger
چکیده

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 Υ (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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تاریخ انتشار 2001