Measurement of charmless semileptonic decays of B mesons
Using the CLEO II detector and a sample of 955 000 Υ(4S) decays we have confirmed charmless semileptonic decays of B mesons. In the momentum interval 2.3-2.6 GeV/c we observe an excess of 107±15±11 leptons, which we attribute to b→ulν. This result yields a model-dependent range of values for Vub/Vcb that is lower than has been obtained in previous studies. For the inclusive spectator model of Altarelli et al. we find Vub/Vcb=0.076±0.008. Models that describe b→ulν with a limited set of exclusive final states give Vub/Vcb=0.06-0.10. © 1993 The American Physical Society.
About this item
Creator - J. Bartelt
- S. E. Csorna
- Z. Egyed
- V. Jain
- D. S., Akerib
- B. Barish
- M. Chadha
- S. Chan
- D. F. Cowen
- G. Eigen
- J. S. Miller
- C. O'Grady
- J. Urheim
- A. J. Weinstein
- D. Acosta
- M. Athanas
- G. Masek
- H. Paar
- M. Sivertz
- A. Bean
- J. Gronberg
- R. Kutschke
- S. Menary
- R. J. Morrison
- S. Nakanishi
- H. N. Nelson
- T. K. Nelson
- J. D. Richman
- A. Ryd
- H. Tajima
- D. Schmidt
Date - 1993-01-01
Bowdoin Department or Program - Physics and Astronomy
Access - Open access
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