Semileptonic branching fractions of charged and neutral B mesons

Authors

M. Athanas, University of California, San Diego
W. Brower, University of California, San Diego
G. Masek, University of California, San Diego
H. P. Paar, University of California, San Diego
J. Gronberg, University of California, Santa Barbara
R. Kutschke, University of California, Santa Barbara
S. Menary, University of California, Santa Barbara
R. J. Morrison, University of California, Santa Barbara
S. Nakanishi, University of California, Santa Barbara
H. N. Nelson, University of California, Santa Barbara
T. K. Nelson, University of California, Santa Barbara
C. Qiao, University of California, Santa Barbara
J. D. Richman, University of California, Santa Barbara
A. Ryd, University of California, Santa Barbara
H. Tajima, University of California, Santa Barbara
D. Sperka, University of California, Santa Barbara
M. S. Witherell, University of California, Santa Barbara
R. Balest, University of Colorado Boulder
K. Cho, University of Colorado Boulder
W. T. Ford, University of Colorado Boulder
D. R. Johnson, University of Colorado Boulder
K. Lingel, University of Colorado Boulder
M. Lohner, University of Colorado Boulder
P. Rankin, University of Colorado Boulder
J. G. Smith, University of Colorado Boulder
J. P. Alexander, Cornell University
C. Bebek, Cornell University
K. Berkelman, Cornell University
K. Bloom, Cornell University
T. E. Browder, Cornell University
D. G. Cassel, Cornell University

Document Type

Article

Publication Date

1-1-1994

Abstract

An examination of leptons in (4S) events tagged by reconstructed B meson decays yields semileptonic branching fractions of b-=(10.1±1.8±1. 5)% for charged and b0=(10.9±0.7±1.1)% for neutral B mesons. This is the first measurement for charged B mesons. Assuming equality of the charged and neutral semileptonic widths, the ratio b-b0=0.93±0.18±0.12 is equivalent to the ratio of lifetimes. © 1994 The American Physical Society.

Recommended Citation

Athanas, M.; Brower, W.; Masek, G.; Paar, H. P.; Gronberg, J.; Kutschke, R.; Menary, S.; Morrison, R. J.; Nakanishi, S.; Nelson, H. N.; Nelson, T. K.; Qiao, C.; Richman, J. D.; Ryd, A.; Tajima, H.; Sperka, D.; Witherell, M. S.; Balest, R.; Cho, K.; Ford, W. T.; Johnson, D. R.; Lingel, K.; Lohner, M.; Rankin, P.; Smith, J. G.; Alexander, J. P.; Bebek, C.; Berkelman, K.; Bloom, K.; Browder, T. E.; and Cassel, D. G., "Semileptonic branching fractions of charged and neutral B mesons" (1994). Physics Faculty Publications. 36.
https://digitalcommons.bowdoin.edu/physics-faculty-publications/36