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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. Boisvert
  • D. 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

Research output: Contribution to journalArticlepeer-review

Abstract

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
Volume70
Issue number3
DOIs
StatePublished - 2004

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