Time-dependent CP-violating asymmetry in B0-->rho0gamma decays

Y Ushiroda; K Sumisawa; N Taniguchi; I Adachi; H Aihara; K Arinstein; T Aushev; S Bahinipati; A M Bakich; V Balagura; E Barberio; K Belous; U Bitenc; A Bondar; A Bozek; M Bracko; T E Browder; P Chang; Y Chao; A Chen; W T Chen; B G Cheon; R Chistov; I-S Cho; Y Choi; J Dalseno; M Dash; S Eidelman; D Epifanov; N Gabyshev; B Golob; H Ha; J Haba; K Hara; T Hara; K Hayasaka; M Hazumi; D Heffernan; T Hokuue; Y Hoshi; W-S Hou; H J Hyun; K Inami; A Ishikawa; H Ishino; R Itoh; Y Iwasaki; D H Kah; J H Kang; H Kawai; T Kawasaki; H Kichimi; Y J Kim; K Kinoshita; S Korpar; P Krizan; P Krokovny; R Kumar; C C Kuo; A Kuzmin; Y-J Kwon; M J Lee; S E Lee; T Lesiak; S-W Lin; D Liventsev; F Mandl; S McOnie; T Medvedeva; K Miyabayashi; H Miyake; H Miyata; Y Miyazaki; R Mizuk; D Mohapatra; G R Moloney; Y Nagasaka; M Nakao; H Nakazawa; S Nishida; O Nitoh; S Noguchi; T Nozaki; S Ogawa; T Ohshima; S Okuno; S L Olsen; P Pakhlov; G Pakhlova; C W Park; H Park; L S Peak; L E Piilonen; H Sahoo; Y Sakai; O Schneider; J Schümann; A J Schwartz; K Senyo; M E Sevior; M Shapkin; C P Shen; H Shibuya; J-G Shiu; B Shwartz; J B Singh; A Sokolov; A Somov; S Stanic; M Staric; T Sumiyoshi; O Tajima; F Takasaki; K Tamai; M Tanaka; Y Teramoto; I Tikhomirov; K Trabelsi; S Uehara; K Ueno; T Uglov; Y Unno; S Uno; P Urquijo; Y Usov; G Varner; K Vervink; S Villa; C C Wang; C H Wang; M-Z Wang; P Wang; X L Wang; Y Watanabe; E Won; B D Yabsley; A Yamaguchi; Y Yamashita; M Yamauchi; Z P Zhang; A Zupanc; O Zyukova; Belle Collaboration

doi:10.1103/PhysRevLett.100.021602

Time-dependent CP-violating asymmetry in B0-->rho0gamma decays

Phys Rev Lett. 2008 Jan 18;100(2):021602. doi: 10.1103/PhysRevLett.100.021602. Epub 2008 Jan 18.

Authors

Y Ushiroda¹, K Sumisawa, N Taniguchi, I Adachi, H Aihara, K Arinstein, T Aushev, S Bahinipati, A M Bakich, V Balagura, E Barberio, K Belous, U Bitenc, A Bondar, A Bozek, M Bracko, T E Browder, P Chang, Y Chao, A Chen, W T Chen, B G Cheon, R Chistov, I-S Cho, Y Choi, J Dalseno, M Dash, S Eidelman, D Epifanov, N Gabyshev, B Golob, H Ha, J Haba, K Hara, T Hara, K Hayasaka, M Hazumi, D Heffernan, T Hokuue, Y Hoshi, W-S Hou, H J Hyun, K Inami, A Ishikawa, H Ishino, R Itoh, Y Iwasaki, D H Kah, J H Kang, H Kawai, T Kawasaki, H Kichimi, Y J Kim, K Kinoshita, S Korpar, P Krizan, P Krokovny, R Kumar, C C Kuo, A Kuzmin, Y-J Kwon, M J Lee, S E Lee, T Lesiak, S-W Lin, D Liventsev, F Mandl, S McOnie, T Medvedeva, K Miyabayashi, H Miyake, H Miyata, Y Miyazaki, R Mizuk, D Mohapatra, G R Moloney, Y Nagasaka, M Nakao, H Nakazawa, S Nishida, O Nitoh, S Noguchi, T Nozaki, S Ogawa, T Ohshima, S Okuno, S L Olsen, P Pakhlov, G Pakhlova, C W Park, H Park, L S Peak, L E Piilonen, H Sahoo, Y Sakai, O Schneider, J Schümann, A J Schwartz, K Senyo, M E Sevior, M Shapkin, C P Shen, H Shibuya, J-G Shiu, B Shwartz, J B Singh, A Sokolov, A Somov, S Stanic, M Staric, T Sumiyoshi, O Tajima, F Takasaki, K Tamai, M Tanaka, Y Teramoto, I Tikhomirov, K Trabelsi, S Uehara, K Ueno, T Uglov, Y Unno, S Uno, P Urquijo, Y Usov, G Varner, K Vervink, S Villa, C C Wang, C H Wang, M-Z Wang, P Wang, X L Wang, Y Watanabe, E Won, B D Yabsley, A Yamaguchi, Y Yamashita, M Yamauchi, Z P Zhang, A Zupanc, O Zyukova; Belle Collaboration

Affiliation

¹ High Energy Accelerator Research Organization (KEK), Tsukuba.

PMID: 18232853
DOI: 10.1103/PhysRevLett.100.021602

Abstract

We report the first measurement of CP-violation parameters in B0-->rho0gamma decays based on a data sample of 657x10(6)BB pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the time-dependent and direct CP-violating parameters, Srho0gamma=-0.83+/-0.65(stat)+/-0.18(syst) and Arho0gamma=-0.44+/-0.49(stat)+/-0.14(syst), respectively.