Observation of B0 -->D0K0 and B0 -->D0K*0 decays. P Krokovny , K Abe , T Abe , I Adachi , H Aihara , M Akatsu , Y Asano , T Aso , V Aulchenko , T Aushev , A M Bakich , Y Ban , A Bay , I Bedny , A Bondar , A Bozek , M Bracko , J Brodzicka , T E Browder , B C K Casey , P Chang , Y Chao , K-F Chen , B G Cheon , R Chistov , S-K Choi , Y Choi , Y K 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 H Kang , J S Kang , P Kapusta , N Katayama , H Kawai , H Kawai , Y Kawakami , T Kawasaki , H Kichimi , D W Kim , H J Kim , H O Kim , Hyunwoo Kim , J H Kim , S Kobayashi , P Koppenburg , A Kuzmin , Y-J Kwon , J S Lange , G Leder , S H 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 W Nam , Z Natkaniec , S Nishida , O Nitoh , S Ogawa , T Ohshima , T Okabe , S Okuno , S L Olsen , Y Onuki , W Ostrowicz , H Ozaki , P Pakhlov , H Palka , C W Park , H Park , M Peters , L E 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 E Sevior , H Shibuya , B Shwartz , V Sidorov , J B Singh , S Stanic , M Staric , A Sugi , K Sumisawa , T Sumiyoshi , S Suzuki , S Y Suzuki , S K Swain , T Takahashi , F Takasaki , K Tamai , N Tamura , J Tanaka , M Tanaka , G N Taylor , Y Teramoto , S Tokuda , T Tomura , T Tsuboyama , T Tsukamoto , S Uehara , Y Unno , S Uno , G Varner , K E Varvell , C C Wang , C H Wang , J G Wang , E Won , B D Yabsley , Y Yamada , A Yamaguchi , Y Yamashita , M Yamauchi , H Yanai , Y Yusa , C C Zhang , Z P Zhang , V Zhilich , D Zontar Physical Review Letters(2003)
摘要
We report on a search for B(0)-->D(*0)K(*0) decays based on 85 x 10(6) BB events collected with the Belle detector at KEKB. The B(0)-->D0K(0) and B(0)-->D0K(*0) decays have been observed for the first time with the branching fractions B(B(0)-->D0K(0))=(5.0(+1.3)(-1.2)+/-0.6)x10(-5) and B(B(0)-->D0K(*0))=(4.8(+1.1)(-1.0)+/-0.5)x10(-5). No significant signal has been found for the B(0)-->D(*0)K*0) and B(0)-->D(*0)K(*0) decay modes, and upper limits at 90% C.L. are presented.
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