Observation Of (B)Over-Bar(0)-> D-0(K)Over-Bar(0) And (B)Over-Bar(0)-> D-0(K)Over-Bar(*0) Decays

P. Krokovny,K. Abe,T. Abe,I. Adachi,H. Aihara,M. Akatsu,Y. Asano,T. Aso,V. Aulchenko,T. Aushev,A. Bakich,Y. Ban,A. Bay,I. Bedny,A. Bondar,A. Bozek,M. Bračko,J. Brodzicka,T. Browder,B. Casey,P. Chang,Y. Chao,K.-F. Chen,B. Cheon,R. Chistov,S.-K. Choi,Y. Choi,M. Danilov,A. Drutskoy, S. Eidelman,V. Eiges,Y. Enari,C. Fukunaga,N. Gabyshev,A. Garmash,T. Gershon,J. Haba,T. Hara,K. Hasuko,H. Hayashii,M. Hazumi,I. Higuchi,T. Higuchi,T. Hojo,Y. Hoshi,W.-S. Hou,H.-C. Huang,Y. Igarashi,T. Iijima,K. Inami,A. Ishikawa,R. Itoh,H. Iwasaki,Y. Iwasaki,J. Kaneko,J. Kang,P. Kapusta,N. Katayama,H. Kawai,Y. Kawakami, T. Kawasaki,H. Kichimi,D. Kim,H. Kim,Hyunwoo Kim,J. Kim,S. Kobayashi,P. Koppenburg,A. Kuzmin,Y.-J. Kwon, J. Lange,G. Leder,S. Lee,S.-W. Lin,D. Liventsev,J. MacNaughton,G. Majumder,F. Mandl,T. Matsuishi,S. Matsumoto,T. Matsumoto,W. Mitaroff,K. Miyabayashi,H. Miyake,H. Miyata,T. Nagamine,Y. Nagasaka,T. Nakadaira,E. Nakano,M. Nakao,H. Nakazawa,J. Nam,Z. Natkaniec,S. Nishida,O. Nitoh,S. Ogawa,T. Ohshima,T. Okabe,S. Okuno,S. Olsen,Y. Onuki,W. Ostrowicz,H. Ozaki,P. Pakhlov,H. Palka,C. Park,H. Park,M. Peters,L. Piilonen,M. Rozanska,K. Rybicki,H. Sagawa,Y. Sakai,M. Satapathy,A. Satpathy,O. Schneider,S. Schrenk,J. Schümann,S. Semenov, K. Senyo,R. Seuster,M. Sevior,H. Shibuya,B. Shwartz,V. Sidorov,J. Singh,S. Stanič,M. Starič,A. Sugi, K. Sumisawa,T. Sumiyoshi,S. Suzuki,S. Swain,T. Takahashi,F. Takasaki,K. Tamai,N. Tamura,J. Tanaka,M. Tanaka,G. Taylor,Y. Teramoto,S. Tokuda,T. Tomura,T. Tsuboyama,T. Tsukamoto,S. Uehara,Y. Unno,S. Uno,G. Varner,K. Varvell,C. Wang,J. Wang,E. Won,B. Yabsley,Y. Yamada,A. Yamaguchi,Y. Yamashita,M. Yamauchi,H. Yanai,Y. Yusa, C. Zhang,Z. Zhang,V. Zhilich,D. Žontar

PHYSICAL REVIEW LETTERS（2003）

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摘要

We report on a search for (B) over bar (0) --> D-(*()0)(K) over bar (()*()0) decays based on 85 x 10(6) B (B) over bar events collected with the Belle detector at KEKB. The (B) over bar (0)-->D-0(K) over bar (0) and (B) over bar (0) --> D-0(K) over bar*(0) decays have been observed for the first time with the branching fractions B((B) over bar (0)-->D-0(K) over bar (0))=(5.0(-1.2)(+1.3) +/- 0.6) x 10(-5) and B((B) over bar (0) --> D-0(K) over bar*(0)) = (4.8(-1.0)(+1.1) +/- 0.5) x 10(-5). No significant signal has been found for the (B) over bar (0) --> D*(0)(K) over bar (()*()0) and (B) over bar (0)-->(D) over bar (()*()0)(K) over bar*(0) decay modes, and upper limits at 90% C.L. are presented.

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