Time-dependent CP violation effects in partially reconstructed [formula omitted] decays

T Gershon,J Zhang,U Bitenc,M Watanabe,O Tajima,N Katayama,M Bračko,T Nagamine,T Kawasaki,Y Ushiroda,J Ying,M Hazumi,A Kuzmin,K Tamai,T Matsumoto,M Starič,M Nakao,T Nozaki,A Chen,S Bahinipati,S Cole,T Schietinger,H Hayashii,D Liventsev,S Blyth,J Macnaughton,H Miyata,P Pakhlov,T Tsukamoto,G Leder,S Uehara,T Ohshima,H Shibuya,M Iwasaki,Y Yamashita,E Nakano,A Bondar,A Limosani,T Lesiak,I Bedny,S Nishida,R Itoh,N Kent,A Chuvikov,F Mandl,S Ogawa,J Dragic,S Suzuki,H Nakazawa,G Gokhroo,J Haba,T Tsuboyama,H Yamamoto,L Hinz,H Aihara,P Krokovny,S Banerjee,I Adachi,T Uglov,B Golob,D Mohapatra,K Inami,A Ishikawa,K Hara,A Gorišek,G Majumder,Y Sakai,T Sumiyoshi,C Schwanda,S Okuno,R Pestotnik,S Stanič,Y Asano,K Trabelsi,S Eidelman,H Kawai,O Schneider,W Mitaroff,J Dalseno,H Miyake,Y Hoshi,H Kichimi,Y Choi,R Stamen,Heyoung Yang,K Sumisawa,O Nitoh,H Ishino,N Tamura,F Takasaki,D Marlow,W.-S Hou,D Žontar,M Danilov,A Yamaguchi,H Sagawa,S Fratina,J Li,S Villa,M Dash,P Kapusta,S Uno,M Yamauchi,N Sato,W Ostrowicz,Y Teramoto,J Brodzicka,K Miyabayashi,A Poluektov,A Imoto,T Aushev,P Urquijo,I Bizjak,Y Mikami,A Somov,N Parslow,N Gabyshev,T Okabe,K Hayasaka,T Hokuue,T Iijima,K Kinoshita,S Hou,K Senyo,A Garmash,P Chang,A Bay,M Tanaka,G Varner,C W Park ,S W Lin ,C H Wang ,S L Olsen ,T Sarangi ,J B Singh ,Y Chào ,S K Choi ,J H Kang ,K E Varvell ,Suneel Kumar ,B Yabsley ,J S Kang ,L S Peak ,L M Zhang ,S M Kim ,B G Cheon ,L E Piilonen ,C C Wang ,X C Tian ,H Pałka ,T A Shibata ,H R Khan ,N C Hastings ,Qingguo Xie ,M C Chang ,A J Schwartz ,H J Kim ,Z P Zhang ,T E Browder ,Abe K ,Y J Kwon ,F J Ronga ,W T Chen ,A M Bakich ,G R Moloney ,M E Sevior ,C C Kuo ,A Bożek

doi:10.1016/j.physletb.2005.07.020

Abstract

We report measurements of time-dependent decay rates for B0→D∗∓π± decays and extraction of CP violation parameters related to ϕ3. We use a partial reconstruction technique, whereby signal events are identified using information only from the primary pion and the charged pion from the decay of the D∗∓. The analysis uses 140 fb−1 of data accumulated at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. We measure the CP violation parameters S+=0.035±0.041(stat)±0.018(syst) and S−=0.025±0.041(stat)±0.018(syst).

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