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

A. H. Mahmood et al. (CLEO Collaboration)
Phys. Rev. D 70, 032003 – Published 17 August 2004
PDFExport Citation

Abstract

We report a new measurement of the B-meson semileptonic decay momentum spectrum that has been made with a sample of 9.4 fb1 of e+e data collected with the CLEO II detector at the Υ(4S) resonance. Electrons from primary semileptonic decays and secondary charm decays were separated by using charge and angular correlations in Υ(4S) events with a high-momentum lepton and an additional electron. We determined the semileptonic branching fraction to be B(BXe+νe)=(10.91±0.09±0.24)% 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.

  • Received 8 April 2004

DOI:https://doi.org/10.1103/PhysRevD.70.032003

©2004 American Physical Society

Authors & Affiliations

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 70, Iss. 3 — 1 August 2004

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review D

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×