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Measurement of charmless semileptonic decays of B mesons

dc.contributor.authorAmmar, Raymond G.
dc.contributor.authorBall, S.
dc.contributor.authorBaringer, Philip S.
dc.contributor.authorCoppage, Don
dc.contributor.authorCopty, N.
dc.contributor.authorDavis, Robin E. P.
dc.contributor.authorHancock, N.
dc.contributor.authorKelly, M.
dc.contributor.authorKwak, Nowhan
dc.contributor.authorLam, H.
dc.date.accessioned2007-04-14T10:01:18Z
dc.date.available2007-04-14T10:01:18Z
dc.date.issued1993-12
dc.identifier.citationBARTELT, J, CSORNA, SE, et al. Measurement of charmless semileptonic decays of B mesons. PHYSICAL REVIEW LETTERS. December 1993. 71(25) : 4111-4115
dc.identifier.urihttp://hdl.handle.net/1808/1469
dc.description.abstractUsing the CLEO II detector and a sample of 955 000 UPSILON(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 --> ulnu. This result yields a model-dependent range of values for \V(ub)/V(cb)\ that is lower than has been obtained in previous studies. For the inclusive spectator model of Altarelli et al. we find \V(ub)/V(cb)\ = 0.076 +/- 0.008. Models that describe b --> ulnu with a limited set of exclusive final states give \V(ub)/V(cb)\ = 0.06 - 0.10.
dc.language.isoen_US
dc.publisherAMERICAN PHYSICAL SOC
dc.titleMeasurement of charmless semileptonic decays of B mesons
dc.typeArticle
dc.identifier.doi10.1103/PhysRevLett.71.4111
dc.rights.accessrightsopenAccess


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