A study of decay channels

J M Link,P M Yager,J C Anjos,I Bediaga,C Gobel,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 Sanchezhernandez,Claramonika Uribe,F Vazquez,L Agostino,L Cinquini, J P Cumalat,B Oreilly, I Segoni,Kevin Stenson, J N Butler, H W K Cheung,G Chiodini,I Gaines,P H Garbincius,L Garren, E Gottschalk,P H Kasper,A Kreymer,R Kutschke,M Wang,L Benussi,M Bertani,S Bianco,F Fabbri, A Zallo,Marco A H Reyes,C Cawlfield,Dae Yeon Kim, A M Rahimi,J Wiss,Robert Gardner,A Kryemadhi, Y S Chung,J S Kang,B R Ko, J W Kwak,K B Lee,Kihyun Cho,H Park,G Alimonti,S Barberis,M Boschini,A Cerutti,P Dangelo,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 Bonomi,G Gianini,G Liguori,D Lopes Pegna,M M Merlo, D Pantea,S P Ratti,Cristina Riccardi,P Vitulo,H Hernandez,A Lopez,Hector Mendez,A Paris,J Quinones,J E Ramirez,Yan Zhang,J R Wilson,T Handler,R E Mitchell, D Engh,M Hosack, W Johns,E Luiggi,Jane E Moore,M Nehring, P Sheldon, E W Vaandering, M S Webster,M Sheaff

Physics Letters B（2005）

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摘要

Using data from the FOCUS experiment (FNAL-E831), we report on the decay of D0 mesons into final states containing more than one KS0. We present evidence for two Cabibbo favored decay modes, D0→KS0KS0K−π+ and D0→KS0KS0K+π−, and measure their combined branching fraction relative to D0→K¯0π+π− to be Γ(D0→KS0KS0K±π∓)Γ(D0→K¯0π+π−)=0.0106±0.0019±0.0010. Further, we report new measurements of Γ(D0→KS0KS0KS0)Γ(D0→K¯0π+π−)=0.0179±0.0027±0.0026, Γ(D0→K0K¯0)Γ(D0→K¯0π+π−)=0.0144±0.0032±0.0016, and Γ(D0→KS0KS0π+π−)Γ(D0→K¯0π+π−)=0.0208±0.0035±0.0021 where the first error is statistical and the second is systematic.

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