dc.contributor.author | Ammar, Raymond G. | |
dc.contributor.author | Baringer, Philip S. | |
dc.contributor.author | Bean, Alice | |
dc.contributor.author | Besson, David Zeke | |
dc.contributor.author | Coppage, Don | |
dc.contributor.author | Copty, N. | |
dc.contributor.author | Davis, Robin E. P. | |
dc.contributor.author | Hancock, N. | |
dc.contributor.author | Kotov, S. | |
dc.contributor.author | Kravchenko, I. | |
dc.contributor.author | Kwak, Nowhan | |
dc.date.accessioned | 2007-04-13T20:04:19Z | |
dc.date.available | 2007-04-13T20:04:19Z | |
dc.date.issued | 1996-03 | |
dc.identifier.citation | Barish, 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.other | http://publish.aps.org/ | |
dc.identifier.uri | http://hdl.handle.net/1808/1407 | |
dc.description.abstract | We 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.iso | en_US | |
dc.publisher | AMERICAN PHYSICAL SOC | |
dc.title | Measurement of the B semileptonic branching fraction with lepton tags | |
dc.type | Article | |
dc.rights.accessrights | openAccess | |