Observation Of The Xi(+)(C) Charmed Baryon Decays To Sigma K-+(-)Pi(+), Sigma(+)(K)Over-Bar*(O), And Lambda K-Pi(+)Pi(+)

T. Bergfeld,B.I. Eisenstein,J. Ernst,G.E. Gladding,G.D. Gollin,M. Palmer,M. Selen,J.J. Thaler,K.W. Edwards,K.W. McLean,M. Ogg, A. Bellerive,D.I. Britton,E.R.F. Hyatt,R. Janicek,D.B. MacFarlane,P.M. Patel,B. Spaan,A.J. Sadoff,R. Ammar, P. Baringer,A. Bean,D. Besson,D. Coppage,N. Copty,R. Davis,N. Hancock,S. Kotov,I. Kravchenko,N. Kwak,Y. Kubota, M. Lattery,M. Momayezi,J.K. Nelson,S. Patton,R. Poling, V. Savinov,S. Schrenk,R. Wang,M.S. Alam,I.J. Kim,Z. Ling,A.H. Mahmood,J.J. O'Neill, H. Severini,C.R. Sun,F. Wappler,G. Crawford,J.E. Duboscq,R. Fulton,D. Fujino,K.K. Gan,K. Honscheid,H. Kagan, R. Kass,J. Lee,M. Sung,C. White, A. Wolf,M.M. Zoeller,X. Fu,B. Nemati,W.R. Ross, P. Skubic,M. Wood,M. Bishai,J. Fast,E. Gerndt,J.W. Hinson, T. Miao,D.H. Miller,M. Modesitt,E.I. Shibata, I.P.J. Shipsey,P.N. Wang, L. Gibbons,S.D. Johnson,Y. Kwon,S. Roberts,E.H. Thorndike,T.E. Coan,J. Dominick,V. Fadeyev, I. Korolkov,M. Lambrecht,S. Sanghera,V. Shelkov,T. Skwarnicki, R. Stroynowski, I. Volobouev,G. Wei,M. Artuso,M. Gao,M. Goldberg,D. He,N. Horwitz,S. Kopp,G.C. Moneti,R. Mountain, F. Muheim,Y. Mukhin,S. Playfer,S. Stone,X. Xing,J. Bartelt,S.E. Csorna,V. Jain,S. Marka,D. Gibaut, K. Kinoshita,P. Pomianowski,B. Barish,M. Chadha,S. Chan,D.F. Cowen,G. Eigen,J.S. Miller,C. O'Grady,J. Urheim,A.J. Weinstein, F. Würthwein,D.M. Asner,M. Athanas,D.W. Bliss,W.S. Brower,G. Masek,H.P. Paar, J. Gronberg,C.M. Korte,R. Kutschke,S. Menary, R.J. Morrison,S. Nakanishi,H.N. Nelson,T.K. Nelson,C. Qiao,J.D. Richman,D. Roberts, A. Ryd,H. Tajima,M.S. Witherell,R. Balest,K. Cho, W.T. Ford,M. Lohner,H. Park,P. Rankin,J.G. Smith,J.P. Alexander,C. Bebek,B.E. Berger,K. Berkelman,K. Bloom,T.E. Browder,D.G. Cassel,H.A. Cho,D.M. Coffman,D.S. Crowcroft,M. Dickson,P.S. Drell,D.J. Dumas,R. Ehrlich,R. Elia,P. Gaidarev,M. Garcia-Sciveres,B. Gittelman,S.W. Gray,D.L. Hartill, B.K. Heltsley,S. Henderson,C.D. Jones,S.L. Jones,J. Kandaswamy,N. Katayama,P.C. Kim,D.L. Kreinick,T. Lee,Y. Liu,G.S. Ludwig,J. Masui,J. Mevissen,N.B. Mistry,C.R. Ng,E. Nordberg,J.R. Patterson,D. Peterson,D. Riley, A. Soffer, P. Avery,A. Freyberger,K. Lingel, C. Prescott,J. Rodriguez,S. Yang,J. Yelton,G. Brandenburg,D. Cinabro,T. Liu,M. Saulnier,R. Wilson,H. Yamamoto

PHYSICS LETTERS B（1996）

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摘要

We have observed two new decay modes of the charmed baryon Xi(c)(+) into Sigma(+)K(-) pi(+) and Sigma(+)K*(0) using data collected with the CLEO II detector, We also present the first measurement of the branching fraction for the previously observed decay mode Xi(c)(+) --> Lambda K- pi(+)pi(+). The branching fractions for these three modes relative to Xi(c)(+) --> Xi(-) pi(+)pi(+) are measured to be 1.18 +/- 0.26 +/- 0.17, 0.92 +/- 0.27 +/- 0.14, and 0.58 +/- 0.16 +/- 0.07, respectively.

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14.20.Lq,13.30.Eg

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