First Observation Of Inclusive B Decays To The Charmed Strange Baryons Xi(0)(C) And Xi(+)(C)

B. Barish,M. Chadha,S. Chan,G. Eigen,J. Miller,C. O'Grady,M. Schmidtler,J. Urheim,A. Weinstein, F. Würthwein,D. Asner,D. Bliss, W. Brower, G. Masek, H. Paar, S. Prell,V. Sharma, J. Gronberg,T. Hill, R. Kutschke,D. Lange, S. Menary,R. Morrison,H. Nelson,T. Nelson,C. Qiao,J. Richman,D. Roberts, A. Ryd,M. Witherell,R. Balest,B. Behrens,K. Cho,W. Ford,H. Park,P. Rankin,J. Roy,J. Smith, J. Alexander,C. Bebek,B. Berger,K. Berkelman,K. Bloom,D. Cassel,H. Cho,D. Coffman,D. Crowcroft,M. Dickson, P. Drell, K. Ecklund,R. Ehrlich,R. Elia,A. Foland,P. Gaidarev,B. Gittelman, S. Gray,D. Hartill, B. Heltsley,P. Hopman,J. Kandaswamy, P. Kim,D. Kreinick,T. Lee,Y. Liu,G. Ludwig,J. Masui,J. Mevissen,N. Mistry,C. Ng, E. Nordberg,M. Ogg,J. Patterson, D. Peterson, D. Riley, A. Soffer,B. Valant-Spaight,C. Ward,M. Athanas, P. Avery,C. Jones, M. Lohner, C. Prescott, J. Yelton, J. Zheng, G. Brandenburg,R. Briere, Y. Gao,D. Kim,R. Wilson, H. Yamamoto, T. Browder,F. Li, Y. Li,J. Rodriguez,T. Bergfeld,B. Eisenstein, J. Ernst,G. Gladding, G. Gollin,R. Hans,E. Johnson,I. Karliner,M. Marsh,M. Palmer,M. Selen,J. Thaler, K. Edwards, A. Bellerive,R. Janicek, D. MacFarlane,K. McLean,P. Patel,A. Sadoff,R. Ammar, P. Baringer,A. Bean, D. Besson,D. Coppage,C. Darling,R. Davis,N. Hancock,S. Kotov,I. Kravchenko,N. Kwak,S. Anderson,Y. Kubota,M. Lattery, S. Lee,J. O'Neill,S. Patton, R. Poling,T. Riehle, V. Savinov,A. Smith,M. Alam,S. Athar,Z. Ling,A. Mahmood, H. Severini,S. Timm,F. Wappler, A. Anastassov,S. Blinov,J. Duboscq,K. Fisher,D. Fujino,K. Gan, T. Hart,K. Honscheid, H. Kagan, R. Kass,J. Lee,M. Spencer,M. Sung, A. Undrus,R. Wanke, A. Wolf, M. Zoeller,B. Nemati,S. Richichi,W. Ross, P. Skubic,M. Wood,M. Bishai,J. Fast,E. Gerndt,J. Hinson,N. Menon,D. Miller, E. Shibata,I. Shipsey, M. Yurko, L. Gibbons,S. Glenn,S. Johnson,Y. Kwon,S. Roberts,E. Thorndike,C. Jessop,K. Lingel,H. Marsiske,M. Perl, D. Ugolini,R. Wang,X. Zhou,T. Coan,V. Fadeyev, I. Korolkov, Y. Maravin,I. Narsky,V. Shelkov,J. Staeck, R. Stroynowski, I. Volobouev,J. Ye,M. Artuso,A. Efimov,F. Frasconi,M. Gao,M. Goldberg, D. He,S. Kopp, G. Moneti,R. Mountain,S. Schuh, T. Skwarnicki,S. Stone,G. Viehhauser, X. Xing, J. Bartelt, S. Csorna,V. Jain,S. Marka,R. Godang, K. Kinoshita,I. Lai,P. Pomianowski,S. Schrenk,G. Bonvicini,D. Cinabro,R. Greene,L. Perera,G. Zhou

PHYSICAL REVIEW LETTERS(1997)

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摘要
Using data collected in the region of the Upsilon(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 Xi(c)(0) and Xi(c)(+). We find 79 +/- 27 Xi(c)(0) and 125 +/- 28 Xi(c)(+) candidates from B decays, leading to product branching fractions of B((B) over bar --> Xi(c)(0)X)B(Xi(c)(0) --> Xi(-)pi(+)) = (0.144 +/- 0.048 +/- 0.021) X 10(-3) and B((B) over bar --> Xi(c)(+)X)B(Xi(C)(+) --> Xi(-)pi(+)pi(+)) = (0.453 +/- 0.096(+0.085)(-0.065)) X 10(-3). [S0031-9007(97)04481-5].
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