Published December 20, 1993 | Version v1
Journal article

Measurement of charmless semileptonic decays of B mesons

Creators

Description

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

Additional details

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
71
Journal Issue
25
Journal Page Range
p. 4111-4115.
ISSN
0031-9007
CODEN
PRLTAO

Optional Information

Collaborations
(CLEO Collaboration).