Phys. Rev. Lett.
73,
3503–3507
(1994)
Semileptonic Branching Fractions of Charged and Neutral B Mesons
M. Athanas et al.
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M. Athanas1, W. Brower1, G. Masek1, H. P. Paar1, J. Gronberg2, R. Kutschke2, S. Menary2, R. J. Morrison2, S. Nakanishi2, H. N. Nelson2, T. K. Nelson2, C. Qiao2, J. D. Richman2, A. Ryd2, H. Tajima2, D. Sperka2, M. S. Witherell2, R. Balest3, K. Cho3, W. T. Ford3, D. R. Johnson3, K. Lingel3, M. Lohner3, P. Rankin3, J. G. Smith3, J. P. Alexander4, C. Bebek4, K. Berkelman4, K. Bloom4, T. E. Browder4,*, D. G. Cassel4, H. A. Cho4, D. M. Coffman4, D. S. Crowcroft4, P. S. Drell4, D. Dumas4, R. Ehrlich4, P. Gaidarev4, M. Garcia-Sciveres4, B. Geiser4, B. Gittelman4, S. W. Gray4, D. L. Hartill4, B. K. Heltsley4, S. Henderson4, C. D. Jones4, S. L. Jones4, J. Kandaswamy4, N. Katayama4, P. C. Kim4, D. L. Kreinick4, G. S. Ludwig4, J. Masui4, J. Mevissen4, N. B. Mistry4, C. R. Ng4, E. Nordberg4, J. R. Patterson4, D. Peterson4, D. Riley4, S. Salman4, M. Sapper4, F. Würthwein4, P. Avery5, A. Freyberger5, J. Rodriguez5, S. Yang5, D. Yelton5, D. Cinabro6, T. Liu6, M. Saulnier6, R. Wilson6, H. Yamamoto6, T. Bergfeld7, B. I. Eisenstein7, G. Gollin7, B. Ong7, M. Palmer7, M. Selen7, J. J. Thaler7, K. W. Edwards8, M. Ogg8, A. Bellerive9, D. I. Britton9, E. R. F. Hyatt9, D. B. MacFarlane9, P. M. Patel9, B. Spaan9, A. J. Sadoff10, R. Ammar11, P. Baringer11, A. Bean11, D. Besson11, D. Coppage11, N. Copty11, R. Davis11, N. Hancock11, M. Kelly11, S. Kotov11, I. Kravchenko11, N. Kwak11, H. Lam11, Y. Kubota12, M. Lattery12, M. Momayezi12, J. K. Nelson12, S. Patton12, R. Poling12, V. Savinov12, S. Schrenk12, R. Wang12, M. S. Alam13, I. J. Kim13, Z. Ling13, A. H. Mahmood13, J. J. O'Neill13, H. Severini13, C. R. Sun13, F. Wappler13, G. Crawford14, C. M. Daubenmier14, R. Fulton14, D. Fujino14, K. K. Gan14, K. Honscheid14, H. Kagan14, R. Kass14, J. Lee14, R. Malchow14, Y. Skovpen14,†, M. Sung14, C. White14, M. M. Zoeller14, F. Butler15, X. Fu15, B. Nemati15, W. R. Ross15, P. Skubic15, M. Wood15, M. Bishai16, J. Fast16, E. Grendt16, R. L. McIlwain16, T. Miao16, D. H. Miller16, M. Modesitt16, D. Payne16, E. I. Shibata16, I. P. J. Shipsey16, P. N. Wang16, M. Battle17, J. Ernst17, L. Gibbons17, Y. Kwon17, S. Roberts17, E. H. Thorndike17, C. H. Wang17, J. Dominick18, M. Lambrecht18, S. Sanghera18, V. Shelkov18, T. Skwarnicki18, R. Stroynowski18, I. Volobouev18, G. Wei18, P. Zadorozhny18, M. Artuso19, M. Gao19, M. Goldberg19, D. He19, N. Horwitz19, R. Kennett19, R. Mountain19, G. C. Moneti19, F. Muheim19, Y. Mukhin19, S. Playfer19, Y. Rozen19, S. Stone19, G. Vasseur19, X. Xing19, G. Zhu19, J. Bartelt20, S. E. Csorna20, Z. Egyed20, V. Jain20, D. Gibaut21, K. Kinoshita21, P. Pomianowski21, B. Barish22, M. Chadha22, S. Chan22, D. F. Cowen22, G. Eigen22, J. S. Miller22, C. O'Grady22, J. Urheim22, and A. J. Weinstein22
1University of California, San Diego, La Jolla, California 92093
2University of California, Santa Barbara, California 93106
3University of Colorado, Boulder, Colorado 80309-0390
4Cornell University, Ithaca, New York 14853
5University of Florida, Gainesville, Florida 32611
6Harvard University, Cambridge, Massachusetts 02138
7University of Illinois, Champaign-Urbana, Illinois 61801
8Carleton University, Ottawa, Ontario K1S 5B6 and The Institute of Particle Physics, Canada
9McGill University, Montréal, Québec H3A 2T8 and The Institute of Particle Physics, Canada
10Ithaca College, Ithaca, New York 14850
11University of Kansas, Lawrence, Kansas 66045
12University of Minnesota, Minneapolis, Minnesota 55455
13State University of New York at Albany, Albany, New York 12222
14The Ohio State University, Columbus, Ohio 43210
15University of Oklahoma, Norman, Oklahoma 73019
16Purdue University, West Lafayette, Indiana 47907
17University of Rochester, Rochester, New York 14627
18Southern Methodist University, Dallas, Texas 75275
19Syracuse University, Syracuse, New York 13244
20Vanderbilt University, Nashville, Tennessee 37235
21Virginia Polytechnica Institute and State University, Blacksburg, Virginia 24061
22California Institute of Technology, Pasadena, California 91125
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Erratum
Received 24 June 1994; published in the issue dated 26 December 1994
An examination of leptons in ϒ(4S) events tagged by reconstructed B meson decays yields semileptonic branching fractions of b-=(10.1±1.8±1.5)% for charged and b0=(10.9±0.7±1.1)% for neutral B mesons. This is the first measurement for charged B mesons. Assuming equality of the charged and neutral semileptonic widths, the ratio b-/b0=0.93±0.18±0.12 is equivalent to the ratio of lifetimes.
© 1994 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.73.3503
DOI:
10.1103/PhysRevLett.73.3503
*Permanent address: University of Hawaii at Manoa. †Permanent address: INP, Novosibirsk, Russia.
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