Measurement of the B-meson inclusive semileptonic branching fraction and electron-energy moments

A. H. Mahmood, S. E. Csorna, G. Bonvicini, D. Cinabro, M. Dubrovin, A. Bornheim, E. Lipeles, S. P. Pappas, A. Shapiro, A. J. Weinstein, R. A. Briere, G. P. Chen, T. Ferguson, G. Tatishvili, H. Vogel, M. E. Watkins, N. E. Adam, J. P. Alexander, K. Berkelman, V. BoisvertD. G. Cassel, J. E. Duboscq, K. M. Ecklund, R. Ehrlich, R. S. Galik, L. Gibbons, B. Gittelman, S. W. Gray, D. L. Hartill, B. K. Heltsley, L. Hsu, C. D. Jones, J. Kandaswamy, D. L. Kreinick, V. E. Kuznetsov, A. Magerkurth, H. Mahlke-Krüger, T. O. Meyer, J. R. Patterson, T. K. Pedlar, D. Peterson, J. Pivarski, D. Riley, A. J. Sadoff, H. Schwarthoff, M. R. Shepherd, W. M. Sun, J. G. Thayer, D. Urner, T. Wilksen

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44 Scopus citations


We report a new measurement of the B-meson semileptonic decay momentum spectrum that has been made with a sample of 9.4 [Formula Presented] of [Formula Presented] data collected with the CLEO II detector at the [Formula Presented] resonance. Electrons from primary semileptonic decays and secondary charm decays were separated by using charge and angular correlations in [Formula Presented] events with a high-momentum lepton and an additional electron. We determined the semileptonic branching fraction to be [Formula Presented] from the normalization of the electron-energy spectrum. We also measured the moments of the electron-energy spectrum with minimum energies from 0.6 to 1.5 GeV.

Original languageEnglish (US)
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number3
StatePublished - 2004


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