Study Of Cabibbo Suppressed Decays Of The D-S(+) Charmed-Strange Meson Involving A K-S(0)

J. M. Link,P. M. Yager,J. C. Anjos, I. Bediaga,C. Castromonte, A. A. Machado, J. Magnin, A. Massafferri,J. M. De Miranda,I. M. Pepe,E. Polycarpo,A. C. Dos Reis,S. Carrillo,E. Casimiro,E. Cuautle,A. Sanchez-Hernandez,C. Uribe, F. Vasquez,L. Agostino,L. Cinquini,J. P. Cumalat,V. Frisullo,B. O'Reilly, I. Segoni,K. Stenson, R. S. Tucker,J. N. Butler, H. W. K. Cheung,G. Chiodini, I. Gaines,P. H. Garbincius,L. A. Garren,E. Gottschalk,P. H. Kasper, A. E. Kreymer,R. Kutschke,M. Wang,L. Benussi,S. Bianco,F. L. Fabbri,A. Zallo,M. Reyes, C. Cawlfield,D. Y. Kim, A. Rahimi, J. Wiss,R. Gardner,A. Kryemadhi,Y. S. Chung,J. S. Kang,B. R. Ko, J. W. Kwaki,K. B. Lee,K. Cho,H. Park,G. Alimonti, S. Barberis,M. Boschini,A. Cerutti, P. D'Angelo, M. Dicorato,P. Dini,L. Edera,S. Erba,P. Inzani,F. Leveraro,S. Malvezzi,D. Menasce,M. Mezzadri, L. Moroni,D. Pedrini, C. Pontoglio,F. Prelz, M. Rovere, S. Sala,T. F. Davenport,V. Arena,G. Boca, G. Bonorni,G. Gianini,G. Liguori,D. Lopes Pegna, M. M. Merlo, D. Pantea,S. P. Ratti,C. Riccardi,P. Vitulo, C. Goebel, J. Otalora,H. Hernandez,A. M. Lopez,H. Mendez,A. Paris,J. Quinones,J. E. Ramirez,Y. Zhang,J. R. Wilson,T. Handler, R. Mitchell, D. Engh,M. Hosack, W. E. Johns,E. Luiggi,M. Nehring, P. D. Sheldon, E. W. Vaandering, M. Webster, M. Sheaff

PHYSICS LETTERS B（2008）

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摘要

We study the decay of D-s(+) mesons into final states involving a K-S(0) and report the discovery of Cabibbo suppressed decay modes D-s(+) --> K-S(0)pi(-)pi(+)pi(+) (179+/-36 events) and D-s(+) --> K-S(0)pi(+) (113+/-26 events). The branching fraction ratios for the new modes are Gamma(D-s(+) --> K-S(0)pi(-)pi(+)pi(+)) / Gamma(D-s(+) --> K-S(0)pi(-)pi(+)pi(+)) = 0.18+/-0.04+/-0.05 and Gamma(D-s(+) --> K-S(0)pi(+)) / Gamma(D-s(+) --> K-S(0)pi(+)) = 0.104+/-0.024+/-0.014. (C) 2008 Published by Elsevier B.V.

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