Phys. Rev. Lett.
73,
1472–1476
(1994)
Observation of Inclusive B Decays to the Charmed Baryons Σc++ and Σc0
M. Procario et al.
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M. Procario1, R. Balest2, K. Cho2, M. Daoudi2, W. T. Ford2, D. R. Johnson2, K. Lingel2, M. Lohner2, P. Rankin2, J. G. Smith2, J. P. Alexander3, C. Bebek3, K. Berkelman3, K. Bloom3, T. E. Browder3, D. G. Cassel3, H. A. Cho3, D. M. Coffman3, P. S. Drell3, R. Ehrlich3, R. S. Galik3, M. Garcia-Sciveres3, B. Geiser3, B. Gittelman3, S. W. Gray3, D. L. Hartill3, B. K. Heltsley3, C. D. Jones3, S. L. Jones3, J. Kandaswamy3, N. Katayama3, P. C. Kim3, D. L. Kreinick3, G. S. Ludwig3, J. Masui3, J. Mevissen3, N. B. Mistry3, C. R. Ng3, E. Nordberg3, J. R. Patterson3, D. Peterson3, D. Riley3, S. Salman3, M. Sapper3, F. Würthwein3, P. Avery4, A. Freyberger4, J. Rodriguez4, R. Stephens4, S. Yang4, J. Yelton4, D. Cinabro5, S. Henderson5, T. Liu5, M. Saulnier5, R. Wilson5, H. Yamamoto5, T. Bergfeld6, B. I. Eisenstein6, G. Gollin6, B. Ong6, M. Palmer6, M. Selen6, J. J. Thaler6, A. J. Sadoff7, R. Ammar8, S. Ball8, P. Baringer18, A. Bean8, D. Besson8, D. Coppage8, N. Copty8, R. Davis8, N. Hancock8, M. Kelly8, N. Kwak8, H. Lam8, Y. Kubota9, M. Lattery9, J. K. Nelson9, S. Patton9, D. Perticone9, R. Poling9, V. Savinov9, S. Schrenk9, R. Wang9, M. S. Alam10, I. J. Kim10, B. Nemati10, J. J. O'Neill10, H. Severini10, C. R. Sun10, M. M. Zoeller10, G. Crawford11, C. M. Daubenmier11, R. Fulton11, D. Fujino11, K. K. Gan11, K. Honscheid11, H. Kagan11, R. Kass11, J. Lee11, R. Malchow11, F. Morrow11, Y. Skovpen11,*, M. Sung11, C. White11, F. Butler12, X. Fu12, G. Kalbfleisch12, W. R. Ross12, P. Skubic12, J. Snow12, P. L. Wang12, M. Wood12, D. N. Brown13, J. Fast13, R. L. McIlwain13, T. Miao13, D. H. Miller13, M. Modesitt13, D. Payne13, E. I. Shibata13, I. P. J. Shipsey13, P. N. Wang13, M. Battle14, J. Ernst14, Y. Kwon14, S. Roberts14, E. H. Thorndike14, C. H. Wang14, J. Dominick15, M. Lambrecht15, S. Sanghera15, V. Shelkov15, T. Skwarnicki15, R. Stroynowski15, I. Volobouev15, G. Wei15, P. Zadorozhny15, M. Artuso16, M. Goldberg16, D. He16, N. Horwitz16, R. Kennett16, R. Mountain16, G. C. Moneti16, F. Muheim16, Y. Mukhin16, S. Playfer16, Y. Rozen16, S. Stone16, M. Thulasidas16, G. Vasseur16, G. Zhu16, J. Bartelt17, S. E. Csorna17, Z. Egyed17, V. Jain17, K. Kinoshita18, K. W. Edwards19, M. Ogg19, D. I. Britton20, E. R. F. Hyatt20, D. B. MacFarlane20, P. M. Patel20, D. S. Akerib21, B. Barish21, M. Chadha21, S. Chan21, D. F. Cowen21, G. Eigen21, J. S. Miller21, C. O'Grady21, J. Urheim21, A. J. Weinstein21, D. Acosta22, M. Athanas22, G. Masek22, H. P. Paar22, J. Gronberg23, R. Kutschke23, S. Menary23, R. J. Morrison23, S. Nakanishi23, H. N. Nelson23, T. K. Nelson23, C. Qiao23, J. D. Richman23, A. Ryd23, H. Tajima23, D. Schmidt23, D. Sperka23, and M. S. Witherell23
1Carnegie-Mellon, Pittsburgh, Pennsylvania 15213
2University of Colorado, Boulder, Colorado 80309-0390
3Cornell University, Ithaca, New York 14853
4University of Florida, Gainesville, Florida 32611
5Harvard University, Cambridge, Massachusetts 02138
6University of Illinois, Champaign-Urbana, Illinois 61801
7Ithaca College, Ithaca, New York 14850
8University of Kansas, Lawrence, Kansas 66045
9University of Minnesota, Minneapolis, Minnesota 55455
10State University of New York at Albany, Albany, New York 12222
11Ohio State University, Columbus, Ohio 43210
12University of Oklahoma, Norman, Oklahoma 73019
13Purdue University, West Lafayette, Indiana 47907
14University of Rochester, Rochester, New York 14627
15Southern Methodist University, Dallas, Texas 75275
16Syracuse University, Syracuse, New York 13244
17Vanderbilt University, Nashville, Tennessee 37235
18Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
19Carleton University, Ottawa, Ontario K1S 5B6 and the Institute of Particle Physics, Canada
20McGill University, Montréal, Québec H3A 2T8 and the Institute of Particle Physics, Canada
21California Institute of Technology, Pasadena, California 91125
22University of California, San Diego, La Jolla, California 92093
23University of California, Santa Barbara, California 93106
Received 21 December 1993; published in the issue dated 12 September 1994
Using data collected in the region of the γ(4S) resonance with the CLEO II detector operating at the Cornell Electron Storage Ring, we report on evidence for the production of Σc++ and Σc0 baryons in B decays, with Σc→Λc+π. This observation is based on 77±19 Σc++ and 76±21 Σc0 candidates from B decays. We find the product branching fractions B(B̅ →ΣcX)B(Λc+→pK-π+) for Σc=Σc++, Σc0, and Σc+ to be (2.1 ± 0.8 ± 0.7) × 10-4, (2.3 ± 0.8 ± 0.7) × 10-4, and less than 4.8 × 10-4 at 90% confidence level, respectively. A study of the Σc++ and Σc0 momentum spectra indicates that B decays to two-body final states with Σc are suppressed.
© 1994 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.73.1472
DOI:
10.1103/PhysRevLett.73.1472
*Parmanent address: INP, Novosibirsk, Russia.
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