Evidence For B- -> T(-)(V)Over-Bar(T) With A Hadronic Tagging Method Using The Full Data Sample Of Belle

K Hara,Y Horii,T Iijima,I Adachi,H Aihara,D M Asner,T Aushev,T Aziz,A M Bakich,M Barrett,V Bhardwaj,B Bhuyan,A Bondar,G Bonvicini,A Bozek,M Bracko,T E Browder,V Chekelian,A Chen,Peng Chen,B G Cheon,K Chilikin,I S Cho,K Cho,Y Choi,D Cinabro,J Dalseno,J Dingfelder,Z Dolezal,Z Drasal,A Drutskoy,D Dutta,S Eidelman,D Epifanov,S Esen,H Farhat,A Frey,V Gaur,N Gabyshev,S Ganguly,R Gillard,Y M Goh,B Golob,J Haba,T Hara,K Hayasaka,H Hayashii,Tatsuo Higuchi,Y Hoshi,K Inami, A Ishikawa,R Itoh,Yukimoto Iwasaki,Takashi Iwashita,T Julius,J H Kang,T Kawasaki,C Kiesling,Hea Ok Kim,Ji Hyun Kim,K T Kim,Min Jung Kim,Y J Kim,K Kinoshita,J Klucar,B R Ko,P Kodys,S Korpar,R T Kouzes,P Krizan,P Krokovny,B Kronenbitter,T Kuhr,T Kumita,A Kuzmin,Y J Kwon,J S Lange,S H Lee,Jingwen Li,Yuqian Li,J Libby,Chang Liu,Yang Liu,Z Q Liu,D Liventsev,D Matvienko,K Miyabayashi,H Miyata,R Mizuk,G B Mohanty,A Moll,T Mori,N Muramatsu,E Nakano,M Nakao,Hiroyuki Nakazawa,Z Natkaniec,M Nayak

PHYSICAL REVIEW LETTERS（2013）

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摘要

We measure the branching fraction of B- -> t(-)(v) over bar (t) using the full Y(4S) data sample containing 772 x 10(6) B (B) over bar pairs collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. Events with B (B) over bar pairs are tagged by reconstructing one of the B mesons decaying into hadronic final states, and B- -> t(-)(v) over bar (t) candidates are detected in the recoil. We find evidence for B- -> t(-)(v) over bar (t) with a significance of 3.0 standard deviations including systematic errors and measure a branching fraction B(B- -> t(-)(v) over bar (t)) = [0: 72(-0.25)(+0.27)(stat) +/- 0.11(syst)x10(-4). DOI: 10.1103/PhysRevLett.110.131801

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