Phys. Rev. Lett. 79, 3599 - 3603 (1997)
First Observation of Inclusive B Decays to the Charmed Strange Baryons Ξc0 and Ξc+
B. Barish et al. (CLEO Collaboration)
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B. Barish1, M. Chadha1, S. Chan1, G. Eigen1, J. S. Miller1, C. O'Grady1, M. Schmidtler1, J. Urheim1, A. J. Weinstein1, F. Würthwein1, D. M. Asner2, D. W. Bliss2, W. S. Brower2, G. Masek2, H. P. Paar2, S. Prell2, V. Sharma2, J. Gronberg3, T. S. Hill3, R. Kutschke3, D. J. Lange3, S. Menary3, R. J. Morrison3, H. N. Nelson3, T. K. Nelson3, C. Qiao3, J. D. Richman3, D. Roberts3, A. Ryd3, M. S. Witherell3, R. Balest4, B. H. Behrens4, K. Cho4, W. T. Ford4, H. Park4, P. Rankin4, J. Roy4, J. G. Smith4, J. P. Alexander5, C. Bebek5, B. E. Berger5, K. Berkelman5, K. Bloom5, D. G. Cassel5, H. A. Cho5, D. M. Coffman5, D. S. Crowcroft5, M. Dickson5, P. S. Drell5, K. M. Ecklund5, R. Ehrlich5, R. Elia5, A. D. Foland5, P. Gaidarev5, B. Gittelman5, S. W. Gray5, D. L. Hartill5, B. K. Heltsley5, P. I. Hopman5, J. Kandaswamy5, P. C. Kim5, D. L. Kreinick5, T. Lee5, Y. Liu5, G. S. Ludwig5, J. Masui5, J. Mevissen5, N. B. Mistry5, C. R. Ng5, E. Nordberg5, M. Ogg5, J. R. Patterson5, D. Peterson5, D. Riley5, A. Soffer5, B. Valant-Spaight5, C. Ward5, M. Athanas6, P. Avery6, C. D. Jones6, M. Lohner6, C. Prescott6, J. Yelton6, J. Zheng6, G. Brandenburg7, R. A. Briere7, Y. S. Gao7, D. Y.-J. Kim7, R. Wilson7, H. Yamamoto7, T. E. Browder8, F. Li8, Y. Li8, J. L. Rodriguez8, T. Bergfeld9, B. I. Eisenstein9, J. Ernst9, G. E. Gladding9, G. D. Gollin9, R. M. Hans9, E. Johnson9, I. Karliner9, M. A. Marsh9, M. Palmer9, M. Selen9, J. J. Thaler9, K. W. Edwards10,10b, A. Bellerive11,11b, R. Janicek11,11b, D. B. MacFarlane11,11b, K. W. McLean11,11b, P. M. Patel11,11b, A. J. Sadoff12, R. Ammar13, P. Baringer13, A. Bean13, D. Besson13, D. Coppage13, C. Darling13, R. Davis13, N. Hancock13, S. Kotov13, I. Kravchenko13, N. Kwak13, S. Anderson14, Y. Kubota14, M. Lattery14, S. J. Lee14, J. J. O'Neill14, S. Patton14, R. Poling14, T. Riehle14, V. Savinov14, A. Smith14, M. S. Alam15, S. B. Athar15, Z. Ling15, A. H. Mahmood15, H. Severini15, S. Timm15, F. Wappler15, A. Anastassov16, S. Blinov16, J. E. Duboscq16, K. D. Fisher16, D. Fujino16, K. K. Gan16, T. Hart16, K. Honscheid16, H. Kagan16, R. Kass16, J. Lee16, M. B. Spencer16, M. Sung16, A. Undrus16, R. Wanke16, A. Wolf16, M. M. Zoeller16, B. Nemati17, S. J. Richichi17, W. R. Ross17, P. Skubic17, M. Wood17, M. Bishai18, J. Fast18, E. Gerndt18, J. W. Hinson18, N. Menon18, D. H. Miller18, E. I. Shibata18, I. P. J. Shipsey18, M. Yurko18, L. Gibbons19, S. Glenn19, S. D. Johnson19, Y. Kwon19, S. Roberts19, E. H. Thorndike19, C. P. Jessop20, K. Lingel20, H. Marsiske20, M. L. Perl20, D. Ugolini20, R. Wang20, X. Zhou20, T. E. Coan21, V. Fadeyev21, I. Korolkov21, Y. Maravin21, I. Narsky21, V. Shelkov21, J. Staeck21, R. Stroynowski21, I. Volobouev21, J. Ye21, M. Artuso22, A. Efimov22, F. Frasconi22, M. Gao22, M. Goldberg22, D. He22, S. Kopp22, G. C. Moneti22, R. Mountain22, S. Schuh22, T. Skwarnicki22, S. Stone22, G. Viehhauser22, X. Xing22, J. Bartelt23, S. E. Csorna23, V. Jain23, S. Marka23, R. Godang24, K. Kinoshita24, I. C. Lai24, P. Pomianowski24, S. Schrenk24, G. Bonvicini25, D. Cinabro25, R. Greene25, L. P. Perera25, and G. J. Zhou25 (CLEO Collaboration)
1California Institute of Technology, Pasadena, California 91125
2University of California, San Diego, La Jolla, California 92093
3University of California, Santa Barbara, California 93106
4University of Colorado, Boulder, Colorado 80309-0390
5Cornell University, Ithaca, New York 14853
6University of Florida, Gainesville, Florida 32611
7Harvard University, Cambridge, Massachusetts 02138
8University of Hawaii at Manoa, Honolulu, Hawaii 96822
9University of Illinois, Champaign-Urbana, Illinois 61801
10aCarleton University, Ottawa, Ontario, Canada K1S 5B6
10band the Institute of Particle Physics, Canada
11aMcGill University, Montréal, Québec, Canada H3A 2T8
11band the Institute of Particle Physics, Canada
12Ithaca College, Ithaca, New York 14850
13University of Kansas, Lawrence, Kansas 66045
14University of Minnesota, Minneapolis, Minnesota 55455
15State University of New York at Albany, Albany, New York 12222
16Ohio State University, Columbus, Ohio 43210
17University of Oklahoma, Norman, Oklahoma 73019
18Purdue University, West Lafayette, Indiana 47907
19University of Rochester, Rochester, New York 14627
20Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309
21Southern Methodist University, Dallas, Texas 75275
22Syracuse University, Syracuse, New York 13244
23Vanderbilt University, Nashville, Tennessee 37235
24Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
25Wayne State University, Detroit, Michigan 48202
Received 8 May 1997
Using data collected in the region of the ϒ(4S) resonance with the CLEO II detector operating at the Cornell Electron Storage Ring (CESR), we present the first observation of B mesons decaying into the charmed strange baryons Ξc0 and Ξc+. We find 79±27 Ξc0 and 125±28 Ξc+ candidates from B decays, leading to product branching fractions of B( B̅ →Ξc0X)B(Ξc0→Ξ-π+) = (0.144±0.048±0.021)×10-3 and B( B̅ →Ξc+X)B(ΞC+→Ξ-π+π+) = (0.453±0.096- 0.065+ 0.085)×10-3.
©1997 The American Physical Society
URL: http://link.aps.org/abstract/PRL/v79/p3599
DOI: 10.1103/PhysRevLett.79.3599
PACS: 13.25.Hw, 14.20.Lq
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