English

Inclusive Semileptonic B Decays at BABAR

High Energy Physics - Experiment 2019-08-14 v1

Abstract

We report updates on two analyses of inclusive semileptonic B decays based on a dataset of 89 million BB events recorded with the BABAR detector at the Y(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 B meson. In the first analysis, the measurement of the first and second moment of the hadronic mass distribution in Cabibbo-favored B ->X_c l nu decays allows for the determination of the nonperturbative parameters Λˉ\bar{\Lambda} and λ1\lambda_1 of Heavy Quark Effective Theory (HQET) and |Vcb|. In the second analysis, the hadronic mass distribution is used to measure the inclusive charmless semileptonic branching fraction and to determine |Vub|.

Keywords

Cite

@article{arxiv.hep-ex/0402032,
  title  = {Inclusive Semileptonic B Decays at BABAR},
  author = {Urs Langenegger},
  journal= {arXiv preprint arXiv:hep-ex/0402032},
  year   = {2019}
}

Comments

3 pages, 4 postscript figures, submitted to EPS 2003