Phys. Rev. Lett.
80,
1150–1155
(1998)
Flavor-Specific Inclusive B Decays to Charm
T. E. Coan et al. (CLEO Collaboration)
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T. E. Coan1, V. Fadeyev1, I. Korolkov1, Y. Maravin1, I. Narsky1, V. Shelkov1, J. Staeck1, R. Stroynowski1, I. Volobouev1, J. Ye1, M. Artuso2, F. Azfar2, A. Efimov2, M. Goldberg2, D. He2, S. Kopp2, G. C. Moneti2, R. Mountain2, S. Schuh2, T. Skwarnicki2, S. Stone2, G. Viehhauser2, X. Xing2, J. Bartelt3, S. E. Csorna3, V. Jain3,*, K. W. McLean3, S. Marka3, R. Godang4, K. Kinoshita4, I. C. Lai4, P. Pomianowski4, S. Schrenk4, G. Bonvicini5, D. Cinabro5, R. Greene5, L. P. Perera5, G. J. Zhou5, B. Barish6, M. Chadha6, S. Chan6, G. Eigen6, J. S. Miller6, C. O'Grady6, M. Schmidtler6, J. Urheim6, A. J. Weinstein6, F. Würthwein6, D. W. Bliss7, G. Masek7, H. P. Paar7, S. Prell7, V. Sharma7, D. M. Asner8, J. Gronberg8, T. S. Hill8, D. J. Lange8, R. J. Morrison8, H. N. Nelson8, T. K. Nelson8, J. D. Richman8, D. Roberts8, A. Ryd8, M. S. Witherell8, R. Balest9, B. H. Behrens9, W. T. Ford9, A. Gritsan9, H. Park9, J. Roy9, J. G. Smith9, J. P. Alexander10, C. Bebek10, B. E. Berger10, K. Berkelman10, K. Bloom10, V. Boisvert10, D. G. Cassel10, H. A. Cho10, D. S. Crowcroft10, M. Dickson10, S. von Dombrowski10, P. S. Drell10, K. M. Ecklund10, R. Ehrlich10, A. D. Foland10, P. Gaidarev10, L. Gibbons10, B. Gittelman10, S. W. Gray10, D. L. Hartill10, B. K. Heltsley10, P. I. Hopman10, J. Kandaswamy10, P. C. Kim10, D. L. Kreinick10, T. Lee10, Y. Liu10, N. B. Mistry10, C. R. Ng10, E. Nordberg10, M. Ogg10,†, J. R. Patterson10, D. Peterson10, D. Riley10, A. Soffer10, B. Valant-Spaight10, C. Ward10, M. Athanas11, P. Avery11, C. D. Jones11, M. Lohner11, C. Prescott11, J. Yelton11, J. Zheng11, G. Brandenburg12, R. A. Briere12, A. Ershov12, Y. S. Gao12, D. Y.-J. Kim12, R. Wilson12, H. Yamamoto12, T. E. Browder13, Y. Li13, J. L. Rodriguez13, T. Bergfeld14, B. I. Eisenstein14, J. Ernst14, G. E. Gladding14, G. D. Gollin14, R. M. Hans14, E. Johnson14, I. Karliner14, M. A. Marsh14, M. Palmer14, M. Selen14, J. J. Thaler14, K. W. Edwards15a,15b, A. Bellerive16a,16b, R. Janicek16a,16b, D. B. MacFarlane16a,16b, P. M. Patel16a,16b, A. J. Sadoff17, R. Ammar18, P. Baringer18, A. Bean18, D. Besson18, D. Coppage18, C. Darling18, R. Davis18, S. Kotov18, I. Kravchenko18, N. Kwak18, L. Zhou18, S. Anderson19, Y. Kubota19, S. J. Lee19, J. J. O'Neill19, S. Patton19, R. Poling19, T. Riehle19, A. Smith19, M. S. Alam20, S. B. Athar20, Z. Ling20, A. H. Mahmood20, H. Severini20, S. Timm20, F. Wappler20, A. Anastassov21, J. E. Duboscq21, D. Fujino21,‡, K. K. Gan21, T. Hart21, K. Honscheid21, H. Kagan21, R. Kass21, J. Lee21, M. B. Spencer21, M. Sung21, A. Undrus21,§, R. Wanke21, A. Wolf21, M. M. Zoeller21, B. Nemati22, S. J. Richichi22, W. R. Ross22, P. Skubic22, M. Bishai23, J. Fast23, J. W. Hinson23, N. Menon23, D. H. Miller23, E. I. Shibata23, I. P. J. Shipsey23, M. Yurko23, S. Glenn24, S. D. Johnson24, Y. Kwon24,**, S. Roberts24, E. H. Thorndike24, C. P. Jessop25, K. Lingel25, H. Marsiske25, M. L. Perl25, V. Savinov25, D. Ugolini25, R. Wang25, and X. Zhou25 (CLEO Collaboration)
1Southern Methodist University, Dallas, Texas 75275
2Syracuse University, Syracuse, New York 13244
3Vanderbilt University, Nashville, Tennessee 37235
4Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
5Wayne State University, Detroit, Michigan 48202
6California Institute of Technology, Pasadena, California 91125
7University of California, San Diego, La Jolla, California 92093
8University of California, Santa Barbara, California 93106
9University of Colorado, Boulder, Colorado 80309-0390
10Cornell University, Ithaca, New York 14853
11University of Florida, Gainesville, Florida 32611
12Harvard University, Cambridge, Massachusetts 02138
13University of Hawaii at Manoa, Honolulu, Hawaii 96822
14University of Illinois, Urbana-Champaign, Illinois 61801
15aCarleton University Ottawa, Ontario, Canada K1S 5B6
15band the Institute of Particle Physics, Canada
16aMcGill University, Montréal Québec, Canada H3A 2T8
16band the Institute of Particle Physics, Canada
17Ithaca College, Ithaca, New York 14850
18University of Kansas, Lawrence, Kansas 66045
19University of Minnesota, Minneapolis, Minnesota 55455
20State University of New York at Albany, Albany, New York 12222
21Ohio State University, Columbus, Ohio 43210
22University of Oklahoma, Norman, Oklahoma 73019
23Purdue University, West Lafayette, Indiana 47907
24University of Rochester, Rochester, New York 14627
25Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309
Received 23 October 1997; published in the issue dated 9 February 1998
We have measured the branching fractions for B→D̅ X, B→DX, and B→D̅ Xℓ+ν. From these results and some previously measured branching fractions, we obtain B(b→cc̅ s) = (21.9±3.7)%, B(b→sg)<6.8% at 90% C.L., and B(D0→K-π+) = (3.69±0.20)%. Implications for the “ B semileptonic decay problem” (measured branching fraction being below theoretical expectations) are discussed. With the increase in the value of B(b→cc̅ s) due to B→DX, the discrepancy is no longer statistically compelling.
© 1998 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.80.1150
DOI:
10.1103/PhysRevLett.80.1150
PACS:
13.25.Hw, 13.20.He, 14.40.Nd
*Permanent address: Brookhaven National Laboratory, Upton, NY 11973. †Permanent address: University of Texas, Austin, TX 78712. ‡Permanent address: Lawrence Livermore National Laboratory, Livermore, CA 94551. §Permanent address: BINP, RU-630090 Novosibirsk, Russia. **Permanent address: Yonsei University, Seoul 120-749, Korea.
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