Phys. Rev. D 43, 651 - 663 (1991)
Exclusive and inclusive semileptonic decays of B mesons to D mesons
R. Fulton et al.
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R. Fulton, T. Jensen, D. R. Johnson, H. Kagan, R. Kass, F. Morrow, J. Whitmore, P. Wilson, D. Bortolettob, W. -Y. Chenb, J. Dominickb, R. L. McIlwainb, D. H. Millerb, C. R. Ngb, S. F. Schaffnerb, E. I. Shibatab, I. P. J. Shipseyb, W. -M. Yaob, M. Battlec, K. Sparksc, E. H. Thorndikec, C. -H. Wangc, M. S. Alamd, I. J. Kimd, W. C. Lid, V. Romerod, C. R. Sund, P. -N. Wangd, M. M. Zoellerd, M. Goldberge, T. Haupte, N. Horwitze, V. Jaine, M. D. Mestayere, G. C. Monetie, Y. Rozene, P. Rubine, V. Sharmae, T. Skwarnickie, M. Thulasidase, G. Zhue, S. E. Csornaf, T. Letsonf, J. Alexanderg, M. Artusog, C. Bebekg, K. Berkelmang, T. Browderg, D. G. Casselg, E. Cheug, D. M. Coffmang, G. Crawfordg, J. W. DeWireg, P. S. Drellg, R. Ehrlichg, R. S. Galikg, M. Garcia-Sciveresg, B. Geiserg, B. Gittelmang, S. W. Grayg, A. M. Hallingg, D. L. Hartillg, B. K. Heltsleyg, K. Honscheidg, J. Kandaswamyg, N. Katayamag, D. L. Kreinickg, J. D. Lewisg, G. S. Ludwigg, J. Masuig, J. Mevisseng, N. B. Mistryg, S. Nandig, E. Nordbergg, C. O'Gradyg, D. Petersong, M. Pisharodyg, D. Rileyg, M. Sapperg, M. Seleng, A. Silvermang, S. Stoneg, H. Wordeng, M. Worrisg, A. J. Sadoffh, P. Averyi, D. Bessoni, L. Garreni, J. Yeltoni, K. Kinoshitaj, F. M. Pipkinj, M. Procarioj, Richard Wilsonj, J. Wolinskij, D. Xiaoj, Y. Zhuj, R. Ammark, P. Baringerk, D. Coppagek, R. Davisk, P. Haask, N. Kwakk, Ha Lamk, S. Rok, Y. Kubotal, J. K. Nelsonl, D. Perticonel, and R. Polingl
aOhio State University, Columbus, Ohio 43210
bPurdue University, West Lafayette, Indiana 47907
cUniversity of Rochester, Rochester, New York 14627
dState University of New York at Albany, Albany, New York 12222
eSyracuse University, Syracuse, New York 13244
fVanderbilt University, Nashville, Tennessee 37235
gCornell University, Ithaca, New York 14853
hIthaca College, Ithaca, New York 14850
iUniversity of Florida, Gainesville, Florida 32611
jHarvard University, Cambridge, Massachusetts 02138
kUniversity of Kansas, Lawrence, Kansas 66045
lUniversity of Minnesota, Minneapolis, Minnesota 55455
Received 1 August 1990
We report new measurements of the branching fractions B(B-→D0l-ν̅ ), B(B̅ 0→D+l-ν̅ ), and B(B-→D*0l-ν̅ ). Combining these results with our previous measurement of B(B̅ 0→D*+l-ν̅ ), we find that the ratio of semileptonic widths for final states with a vector meson and pseudoscalar meson is (2.6-0.6-0.8+1.1+1.0) and the ratio of charged- to neutral-B-meson lifetimes is (0.89±0.19±0.13)(f00 / f+-) where (f00 / f+-) is the ratio of neutral- to charged-B-meson production at the ϒ(4S). From the B̅ →Dl-ν̅ branching fraction, we calculate |Vcb|=0.040±0.006±0.006, where the first error is statistical and the second is systematic and dominated by the uncertainty in the B-meson lifetime.
©1991 The American Physical Society
URL: http://link.aps.org/doi/10.1103/PhysRevD.43.651
DOI: 10.1103/PhysRevD.43.651
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