Search for exclusive b→u semileptonic decays of B mesons
Using a sample of 935 000 BB̄ pairs collected with the CLEO-II detector at the Cornell Electron Storage Ring, we have obtained upper limits on the branching ratios for the b→ul-ν̄ processes B-→ωl- ν̄, B-→ρ0l-ν̄, and B̄0→ρ+l-ν̄. The combined result using the relationships among the widths for these three modes is B(B-→ρ0l-ν̄)<(1.6-2.7)×10-4 at 90% C.L., where the range of values is due to model dependence of the detection efficiencies. These measurements yield the limits Vub/Vcb<0.08-0.13. © 1993 The American Physical Society.
About this item
Creator - A. Bean
- J. Gronberg
- R. Kutschke
- S. Menary
- R. J., Morrison
- H. N. Nelson
- J. D. Richman
- H. Tajima
- D. Schmidt
- D. Sperka
- M. S. Witherell
- M. Procario
- S. Yang
- R. Ballest
- M. Daoudi
- W. T. Ford
- D. R. Johnson
- K. Lingel
- M. Lohner
- P. Rankin
- J. G. Smith
- J. P. Alexander
- C. Bebek
- K. Berkelman
- D. Besson
- T. E. Browder
- D. G. Cassel
- H. A. Cho
- D. M. Coffman
- P. S. Drell
- R. Ehrlich
Date - 1993-01-01
Bowdoin Department or Program - Physics and Astronomy
Access - Open access
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