Study Of The Decays Lambda(C)+-]Xi(0)K+,Lambda(C)+-]Sigma +K+K-, And Lambda(C)+-]Xi-K+Pi+

P. Avery,A. Freyberger,J. Rodriguez,R. Stephens, J. Yelton,D. Cinabro,S. Henderson,K. Kinoshita,T. Liu,M. Saulnier,R. Wilson,H. Yamamoto,B. Ong,M. Selen,A. Sadoff,R. Ammar,S. Ball, P. Baringer,D. Coppage,N. Copty,R. Davis,N. Hancock,M. Kelly,N. Kwak,H. Lam,Y. Kubota, M. Lattery,J. Nelson,S. Patton,D. Perticone,R. Poling, V. Savinov,S. Schrenk,R. Wang,M. Alam,I. Kim,B. Nemati,J. O’Neill,V. Romero, H. Severini,C. Sun,M. Zoeller,G. Crawford,C. Daubenmier,R. Fulton,D. Fujino,K. Gan,K. Honscheid,H. Kagan, R. Kass,J. Lee,R. Malchow,F. Morrow,Y. Skovpen,M. Sung,C. White, J. Whitmore,P. Wilson,F. Butler,X. Fu,G. Kalbfleisch,M. Lambrecht,W. Ross, P. Skubic,J. Snow, P. Wang,M. Wood, D. Bortoletto,D. Brown,J. Fast,R. McIlwain, T. Miao,D. Miller,M. Modesitt,S. Schaffner, E. Shibata,I. Shipsey, P. Wang,M. Battle,J. Ernst, H. Kroha,S. Roberts,K. Sparks,E. Thorndike,C. Wang,J. Dominick,S. Sanghera, T. Skwarnicki, R. Stroynowski,M. Artuso, D. He,M. Goldberg,N. Horwitz, R. Kennett, G. Moneti, F. Muheim, Y. Mukhin,S. Playfer, Y. Rozen,S. Stone,M. Thulasidas, G. Vasseur, G. Zhu, J. Bartelt, S. Csorna,Z. Egyed,V. Jain, P. Sheldon,D. Akerib,B. Barish,M. Chadha,S. Chan,D. Cowen,G. Eigen,J. Miller,J. Urheim,A. Weinstein, D. Acosta,M. Athanas,G. Masek, H. Paar,M. Sivertz,A. Bean, J. Gronberg,R. Kutschke,S. Menary,R. Morrison,S. Nakanishi,H. Nelson,T. Nelson,J. Richman, A. Ryd,H. Tajima,D. Schmidt, D. Sperka,M. Witherell,M. Procario,S. Yang,R. Balest,K. Cho,M. Daoudi,W. Ford,D. Johnson,K. Lingel,M. Lohner,P. Rankin,J. Smith,J. Alexander,C. Bebek,K. Berkelman,D. Besson, T. Browder,D. Cassel,H. Cho,D. Coffman, P. Drell,R. Ehrlich, M. Garcia-Sciveres,B. Geiser,B. Gittelman,S. Gray,D. Hartill, B. Heltsley,C. Jones,S. Jones,J. Kandaswamy,N. Katayama, P. Kim,D. Kreinick,G. Ludwig,J. Masui,J. Mevissen,N. Mistry,C. Ng,E. Nordberg,M. Ogg,C. O’Grady,J. Patterson,D. Peterson,D. Riley,S. Salman,M. Sapper,H. Worden,M. Worris, F. Würthwein

PHYSICAL REVIEW LETTERS（1993）

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摘要

We report the measurement of new modes of the charmed baryon LAMBDA(c)+ using data recorded by the CLEO II detector at the Cornell Electron Storage Ring. We find branching ratios, relative to LAMBDA(c)+ --> pK-pi+, of 0.070 +/- 0.011 +/- 0.011 for LAMBDA(c)+ --> SIGMA+K+K-, 0.069 +/- 0.023 +/- 0.016 for LAMBDA(c)+ --> SIGMAphi, 0.078 +/- 0.013 +/- 0.013 for LAMBDA(c)+ --> XI0K+, and 0.053 +/- 0.016 +/- 0.010 for LAMBDA(c)+ --> XI*0K+. These measurements indicate that W-exchange diagrams contribute to LAMBDA(c)+ decay. We have also made a new measurement of the previously found mode LAMBDA(c)+ --> XI-K+pi+.

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