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Improved measurement of |Vub| with inclusive semileptonic B decays
- Source :
- Physical Review Letters. 88(23)
- Publication Year :
- 2002
-
Abstract
- We report a new measurement of the Cabibbo-Kobayashi-Maskawa parameter Vub made with a sample of 9.7 x 10(6) BB- events collected with the CLEO II detector. Using heavy quark theory, we combine the observed yield of leptons from semileptonic B decay in the end-point momentum interval 2.2-2.6 GeV/c with recent CLEO II data on B-->X(s)gamma to find Vub = (4.08+/-0.34+/-0.44+/-0.16+/-0.24)x10(-3), where the first two uncertainties are experimental and the last two are from theory.
Details
- Language :
- English
- ISSN :
- 00319007
- Volume :
- 88
- Issue :
- 23
- Database :
- OpenAIRE
- Journal :
- Physical Review Letters
- Accession number :
- edsair.pmid.dedup....d5758966f600a6904cc8599712bb154e