Measurement of CP asymmetry in a time-dependent Dalitz analysis of B0-->(rhopi)0 and a constraint on the quark mixing matrix angle phi2

A Kusaka; C C Wang; H Ishino; K Abe; K Abe; I Adachi; H Aihara; D Anipko; V Aulchenko; T Aushev; A M Bakich; E Barberio; A Bay; I Bedny; K Belous; U Bitenc; I Bizjak; S Blyth; A Bondar; A Bozek; M Bracko; T E Browder; M-C Chang; P Chang; Y Chao; A Chen; K-F Chen; W T Chen; B G Cheon; R Chistov; S-K Choi; Y Choi; Y K Choi; S Cole; J Dalseno; M Danilov; M Dash; J Dragic; A Drutskoy; S Eidelman; S Fratina; M Fujikawa; N Gabyshev; A Garmash; T Gershon; G Gokhroo; B Golob; H Ha; J Haba; T Hara; N C Hastings; K Hayasaka; H Hayashii; M Hazumi; D Heffernan; T Hokuue; Y Hoshi; S Hou; W-S Hou; Y B Hsiung; T Iijima; K Ikado; A Imoto; K Inami; A Ishikawa; R Itoh; M Iwasaki; Y Iwasaki; H Kaji; H Kakuno; J H Kang; P Kapusta; N Katayama; H Kawai; T Kawasaki; H R Khan; H Kichimi; Y J Kim; K Kinoshita; S Korpar; P Krizan; P Krokovny; R Kulasiri; R Kumar; C C Kuo; A Kuzmin; Y-J Kwon; J Lee; M J Lee; S E Lee; T Lesiak; A Limosani; S-W Lin; D Liventsev; F Mandl; D Marlow; T Matsumoto; K Miyabayashi; H Miyake; Y Miyazaki; R Mizuk; T Mori; E Nakano; M Nakao; H Nakazawa; Z Natkaniec; S Nishida; O Nitoh; S Noguchi; S Ogawa; T Ohshima; S Okuno; Y Onuki; H Ozaki; P Pakhlov; G Pakhlova; H Park; K S Park; L S Peak; R Pestotnik; L E Piilonen; A Poluektov; Y Sakai; N Satoyama; O Schneider; J Schümann; A J Schwartz; R Seidl; K Senyo; M E Sevior; M Shapkin; H Shibuya; J B Singh; A Somov; N Soni; S Stanic; M Staric; H Stoeck; S Y Suzuki; O Tajima; F Takasaki; K Tamai; M Tanaka; G N Taylor; Y Teramoto; X C Tian; I Tikhomirov; K Trabelsi; T Tsuboyama; T Tsukamoto; S Uehara; T Uglov; Y Unno; S Uno; P Urquijo; Y Ushiroda; Y Usov; G Varner; S Villa; C H Wang; M-Z Wang; Y Watanabe; R Wedd; E Won; Q L Xie; B D Yabsley; A Yamaguchi; Y Yamashita; L M Zhang; Z P Zhang; V Zhilich; A Zupanc; Belle Collaboration

doi:10.1103/PhysRevLett.98.221602

Measurement of CP asymmetry in a time-dependent Dalitz analysis of B0-->(rhopi)0 and a constraint on the quark mixing matrix angle phi2

Phys Rev Lett. 2007 Jun 1;98(22):221602. doi: 10.1103/PhysRevLett.98.221602. Epub 2007 Jun 1.

Authors

A Kusaka¹, C C Wang, H Ishino, K Abe, K Abe, I Adachi, H Aihara, D Anipko, V Aulchenko, T Aushev, A M Bakich, E Barberio, A Bay, I Bedny, K Belous, U Bitenc, I Bizjak, S Blyth, A Bondar, A Bozek, M Bracko, T E Browder, M-C Chang, P Chang, Y Chao, A Chen, K-F Chen, W T Chen, B G Cheon, R Chistov, S-K Choi, Y Choi, Y K Choi, S Cole, J Dalseno, M Danilov, M Dash, J Dragic, A Drutskoy, S Eidelman, S Fratina, M Fujikawa, N Gabyshev, A Garmash, T Gershon, G Gokhroo, B Golob, H Ha, J Haba, T Hara, N C Hastings, K Hayasaka, H Hayashii, M Hazumi, D Heffernan, T Hokuue, Y Hoshi, S Hou, W-S Hou, Y B Hsiung, T Iijima, K Ikado, A Imoto, K Inami, A Ishikawa, R Itoh, M Iwasaki, Y Iwasaki, H Kaji, H Kakuno, J H Kang, P Kapusta, N Katayama, H Kawai, T Kawasaki, H R Khan, H Kichimi, Y J Kim, K Kinoshita, S Korpar, P Krizan, P Krokovny, R Kulasiri, R Kumar, C C Kuo, A Kuzmin, Y-J Kwon, J Lee, M J Lee, S E Lee, T Lesiak, A Limosani, S-W Lin, D Liventsev, F Mandl, D Marlow, T Matsumoto, K Miyabayashi, H Miyake, Y Miyazaki, R Mizuk, T Mori, E Nakano, M Nakao, H Nakazawa, Z Natkaniec, S Nishida, O Nitoh, S Noguchi, S Ogawa, T Ohshima, S Okuno, Y Onuki, H Ozaki, P Pakhlov, G Pakhlova, H Park, K S Park, L S Peak, R Pestotnik, L E Piilonen, A Poluektov, Y Sakai, N Satoyama, O Schneider, J Schümann, A J Schwartz, R Seidl, K Senyo, M E Sevior, M Shapkin, H Shibuya, J B Singh, A Somov, N Soni, S Stanic, M Staric, H Stoeck, S Y Suzuki, O Tajima, F Takasaki, K Tamai, M Tanaka, G N Taylor, Y Teramoto, X C Tian, I Tikhomirov, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, T Uglov, Y Unno, S Uno, P Urquijo, Y Ushiroda, Y Usov, G Varner, S Villa, C H Wang, M-Z Wang, Y Watanabe, R Wedd, E Won, Q L Xie, B D Yabsley, A Yamaguchi, Y Yamashita, L M Zhang, Z P Zhang, V Zhilich, A Zupanc; Belle Collaboration

Affiliation

¹ Department of Physics, University of Tokyo, Tokyo.

PMID: 17677832
DOI: 10.1103/PhysRevLett.98.221602

Abstract

We present a measurement of CP asymmetry using a time-dependent Dalitz plot analysis of B0-->pi+pi-pi0 decays based on a 414 fb(-1) data sample containing 449 x 10(6) BB pairs. The data was collected on the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric energy e+ e- collider. Combining our analysis with information on charged B decay modes, we perform a full Dalitz and isospin analysis and obtain a constraint on the CKM angle phi2, 68 degrees < phi2 < 95 degrees as the 68.3% confidence interval for the phi2 solution consistent with the standard model (SM). A large SM-disfavored region also remains.