Document Type
Article
Publication Date
1-1-1993
Abstract
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.
Recommended Citation
Bartelt, J.; Csorna, S. E.; Egyed, Z.; Jain, V.; Akerib, D. S.; Barish, B.; Chadha, M.; Chan, S.; Cowen, D. F.; Eigen, G.; Miller, J. S.; O'Grady, C.; Urheim, J.; Weinstein, A. J.; Acosta, D.; Athanas, M.; Masek, G.; Paar, H.; Sivertz, M.; Bean, A.; Gronberg, J.; Kutschke, R.; Menary, S.; Morrison, R. J.; Nakanishi, S.; Nelson, H. N.; Nelson, T. K.; Richman, J. D.; Ryd, A.; Tajima, H.; and Schmidt, D., "Measurement of charmless semileptonic decays of B mesons" (1993). Physics Faculty Publications. 54.
https://digitalcommons.bowdoin.edu/physics-faculty-publications/54