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dc.contributor.authorAmmar, Raymond G.
dc.contributor.authorBaringer, Philip S.
dc.contributor.authorBean, Alice
dc.contributor.authorBesson, David Zeke
dc.contributor.authorCoppage, Don
dc.contributor.authorCopty, N.
dc.contributor.authorDavis, Robin E. P.
dc.contributor.authorHancock, N.
dc.contributor.authorKotov, S.
dc.contributor.authorKravchenko, I.
dc.contributor.authorKwak, Nowhan
dc.date.accessioned2007-04-13T20:04:19Z
dc.date.available2007-04-13T20:04:19Z
dc.date.issued1996-03
dc.identifier.citationBarish, B, Chadha, M, et al. Measurement of the B semileptonic branching fraction with lepton tags. PHYSICAL REVIEW LETTERS. March 1996. 76(10) : 1570-1574
dc.identifier.otherhttp://publish.aps.org/
dc.identifier.urihttp://hdl.handle.net/1808/1407
dc.description.abstractWe have used the CLEO II detector and 2.06 fb(-1) of Y(4S) data to measure the B-meson semileptonic branching fraction. The B --> Xe nu momentum spectrum was obtained over nearly the full momentum range by using charge and kinematic correlations in events with a high-momentum lepton tag and an additional electron. We find B(B --> Xe nu) = (10.49 +/- 0.17 +/- 0.43)%, with overall systematic uncertainties less than those of untagged single-lepton measurements. We use this result to calculate the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element V-cb and to set an upper limit on the fraction of Y(4S) decays to final states other than B (B) over bar.
dc.language.isoen_US
dc.publisherAMERICAN PHYSICAL SOC
dc.titleMeasurement of the B semileptonic branching fraction with lepton tags
dc.typeArticle
dc.rights.accessrightsopenAccess


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