First Observation of Inclusive B Decays to the Charmed Strange Baryons Barry C. Barish , Megha Chadha , Simon Chan , Gerald Eigen , J. S. Miller , C. O’Grady , Mauritius A. R. Schmidtler , Jon Urheim , A. J. R. Weinstein , Frank K. Wuerthwein , D. M. Asner , Daniel Bliss , William S. Brower , G. E. Masek , Hans P. Paar , Soeren Prell , Vivek Kumar Sharma , Jeffrey Gronberg , Theresa Hill , R. Kutschke , D. J. Lange , S. B. Menary , Richard J. S. Morrison , Harry Norman Nelson , Timothy Knight Nelson , Chun Qiao , Jeffrey D. Richman , David A. Roberts , Anders Ryd , Michael S. Witherell , R. Balest , Bh H. Behrens , Kilwon Cho , William T. Ford , Harold S. Park , Peter C. Rankin , J D Roy , James G. Smith , James Alexander , Christopher J. Bebek , Brian Berger , Karl Berkelman , Kenneth Bloom , David Cassel , Hokwon A. Cho , D. M. Coffman , David S. Crowcroft , Michael Dickson , Persis S. Drell , Karl Matthew Ecklund , Rodney I Ehrlich , Rodolfo Elia , Andrew Dean Foland , Peter B. Gaidarev , Bernard Gittelman , Susan Walton Gray , Donald Leroy Hartill , Brian K. Heltsley , Pablo I. Hopman , J. Kandaswamy , P. C. Kim , David L. Kreinick , T. N. Lee , Yi-Hsin Liu , Gerda Ludwig , Junya Masui , J. Mevissen , Nari B. Mistry , Chuen Rue Ng , Emery Nordberg , Mandy Ogg , J. R. Patterson , Dean E. Peterson , David C. Riley , Abner Soffer , Bonnie L. Valant-Spaight , Christopher P. Ward , Michael J. Athanas , Paul Avery , Christopher D. Jones , Martin Lohner , Charles Y. Prescott , John Yelton , Jian-zhuang Zheng , George Brandenburg , Roy Anthony Briere , Y. S. Gao , D. Y.-J. Kim , Richard K. Wilson , Hitoshi Yamamoto , Thomas E. Browder , Fengpei Li , Yan Li , Javier Leonardo González Rodríguez , Tanja Bergfeld , Bob I. Eisenstein , Jesse Ernst , Gary E. Gladding , George D Gollin , R. M. Hans , Erik W. Johnson , Inga Karliner , Michael A. Marsh , Matthew Palmer , Mats A. Selen , Jesse Thaler , Kasper Edwards , Alain Bellerive , Radoslav Janícek , David Brian Macfarlane , Kevin McLean , P. M. Patel , Ahren Sadoff , Rachid Ammar , P. Baringer , Alice Bean , David Zeke Besson , Don Coppage , Cynthia L. Darling , Robert F. Davis , Nigel H. Hancock , Sergey Kotov , I. P. Kravchenko , Nowhan Kwak , Stuart Anderson , Y. Kubota , Mark J. Lattery , Se Ju Lee , John J. O’Neill , S. Patton , Ron Poling , T. H. Riehle , Victor P. Savinov , A. M. Smith , Mohd. Siraj Alam , S. B. Athar , Zhi Ling , Ahmed Mahmood , Horst Severini , Steven Charles Timm , F. R. Wappler , Anton Anastassov , S. V. Blinov , J. E. Duboscq , Kerry Fisher , Daisuke Fujino , K. K. Gan , Teresa L. Hart , Klaus Honscheid , Harris Kagan , Richard Kass , Jason Sang Hun Lee , Michael B. Spencer , Max W. Sung , Alexander Undrus , Ruediger Wanke , Andreas Dr. Wolf , M. Zoeller , Bijan Nemati , Sj J. Richichi , W. R. Ross , Patrick Skubic , Matthew S. Wood , Mary Bishai , J. E. Fast , Ekkehard K. E. Gerndt , Joseph W. Hinson , Narayanan Menon , David Harry Miller , Edward I. Shibata , Ian Peter Joseph Shipsey , M. Yurko , Lawrence Kent Gibbons , Steven M Glenn , Stuart D. Johnson , Y. Kwon , Stuart Roberts , Edward H. Thorndike , Colin P. Jessop , Karen Lingel , Helmut Marsiske , Martin Lewis Perl , Dennis Wayne Ugolini , Raymond Wang , X. J. Zhou , Thomas E. Coan , Vitaliy Fadeyev , Ilya V. Korolkov , Yurii Maravin , Ilya Narsky , V. G. Shelkov , J. Staeck , Ryszard Stroynowski , Igor Volobouev , Jingbo Ye , Marina Artuso , A. O. Efimov , F. Frasconi , Ming Gao , Mitchell D. Goldberg , Dongfeng He , Sacha Elmer Kopp , Gloriano Moneti , Raymond Mountain , Sonja L. Schuh , Tomasz Skwarnicki , Sheldon Stone , Gabriel Viehhauser , Xiangjun Xing , John E. Bartelt , Steven Eugene Tibor Csorna , Vivek Jain , Sz. Márka , R. Godang , Keisuke Kinoshita , Ivan Chee Hong Lai , Paweł Pomianowski , Stephen Schrenk , Gianni Bonvicini , David Anthony Cinabro , Richard L. Greene , Lokukaluge Prasad Perera , Guo Zhou semanticscholar（1997）
摘要
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 Ξc and Ξ + c . We find 79 ± 27 Ξ 0 c and 125 ± 28 Ξ + c candidates from B decays, leading to product branching fractions of B(B → ΞcX)B(Ξ 0 c → Ξ −π+) = (0.144±0.048±0.021)×10−3 and B(B → Ξc X)B(Ξ + c → Ξ −π+π+) = (0.453± 0.096 + 0.085 − 0.065) × 10 −3.
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