Study of B0-->rho+/- pi-/+ time-dependent CP violation at Belle

C C Wang; K Abe; K Abe; T Abe; I Adachi; H Aihara; Y Asano; T Aushev; A M Bakich; Y Ban; A Bay; I Bedny; U Bitenc; I Bizjak; S Blyth; A Bondar; A Bozek; M Bracko; T E Browder; P Chang; Y Chao; K-F Chen; W T Chen; B G Cheon; S-K Choi; Y Choi; A Chuvikov; S Cole; M Dash; L Y Dong; J Dragic; A Drutskoy; S Eidelman; V Eiges; T Gershon; G Gokhroo; R Guo; J Haba; N C Hastings; K Hayasaka; H Hayashii; M Hazumi; T Hokuue; Y Hoshi; S Hou; W-S Hou; Y B Hsiung; T Iijima; A Imoto; K Inami; A Ishikawa; H Ishino; K Itoh; R Itoh; H Iwasaki; Y Iwasaki; H Kakuno; J H Kang; J S Kang; P Kapusta; N Katayama; T Kawasaki; H R Khan; H Kichimi; H J Kim; K Kinoshita; P Krizan; P Krokovny; S Kumar; Y-J Kwon; J S Lange; S E Lee; Y-J Lee; T Lesiak; J Li; A Limosani; S-W Lin; J Macnaughton; T Matsumoto; A Matyja; Y Mikami; W Mitaroff; H Miyata; R Mizuk; D Mohapatra; T Mori; Y Nagasaka; T Nakadaira; E Nakano; M Nakao; Z Natkaniec; S Nishida; O Nitoh; T Nozaki; S Ogawa; T Ohshima; T Okabe; S Okuno; S L Olsen; W Ostrowicz; H Ozaki; P Pakhlov; C W Park; N Parslow; L S Peak; L E Piilonen; F J Ronga; M Rozanska; H Sagawa; S Saitoh; Y Sakai; N Sato; T Schietinger; O Schneider; J Schümann; A J Schwartz; S Semenov; K Senyo; M E Sevior; H Shibuya; J B Singh; A Somov; R Stamen; S Stanic; M Staric; K Sumisawa; T Sumiyoshi; S Y Suzuki; O Tajima; F Takasaki; K Tamai; M Tanaka; G N Taylor; Y Teramoto; X C Tian; K Trabelsi; T Tsukamoto; S Uehara; T Uglov; K Ueno; S Uno; G Varner; K E Varvell; S Villa; C H Wang; M-Z Wang; M Watanabe; B D Yabsley; Y Yamada; A Yamaguchi; Y Yamashita; M Yamauchi; J Ying; Y Yusa; J Zhang; L M Zhang; Z P Zhang; V Zhilich; T Ziegler; D Zontar; Belle Collaboration

doi:10.1103/PhysRevLett.94.121801

Study of B0-->rho+/- pi-/+ time-dependent CP violation at Belle

Phys Rev Lett. 2005 Apr 1;94(12):121801. doi: 10.1103/PhysRevLett.94.121801. Epub 2005 Apr 1.

Authors

C C Wang¹, K Abe, K Abe, T Abe, I Adachi, H Aihara, Y Asano, T Aushev, A M Bakich, Y Ban, A Bay, I Bedny, U Bitenc, I Bizjak, S Blyth, A Bondar, A Bozek, M Bracko, T E Browder, P Chang, Y Chao, K-F Chen, W T Chen, B G Cheon, S-K Choi, Y Choi, A Chuvikov, S Cole, M Dash, L Y Dong, J Dragic, A Drutskoy, S Eidelman, V Eiges, T Gershon, G Gokhroo, R Guo, J Haba, N C Hastings, K Hayasaka, H Hayashii, M Hazumi, T Hokuue, Y Hoshi, S Hou, W-S Hou, Y B Hsiung, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, K Itoh, R Itoh, H Iwasaki, Y Iwasaki, H Kakuno, J H Kang, J S Kang, P Kapusta, N Katayama, T Kawasaki, H R Khan, H Kichimi, H J Kim, K Kinoshita, P Krizan, P Krokovny, S Kumar, Y-J Kwon, J S Lange, S E Lee, Y-J Lee, T Lesiak, J Li, A Limosani, S-W Lin, J Macnaughton, T Matsumoto, A Matyja, Y Mikami, W Mitaroff, H Miyata, R Mizuk, D Mohapatra, T Mori, Y Nagasaka, T Nakadaira, E Nakano, M Nakao, Z Natkaniec, S Nishida, O Nitoh, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, S L Olsen, W Ostrowicz, H Ozaki, P Pakhlov, C W Park, N Parslow, L S Peak, L E Piilonen, F J Ronga, M Rozanska, H Sagawa, S Saitoh, Y Sakai, N Sato, T Schietinger, O Schneider, J Schümann, A J Schwartz, S Semenov, K Senyo, M E Sevior, H Shibuya, J B Singh, A Somov, R Stamen, S Stanic, M Staric, K Sumisawa, T Sumiyoshi, S Y Suzuki, O Tajima, F Takasaki, K Tamai, M Tanaka, G N Taylor, Y Teramoto, X C Tian, K Trabelsi, T Tsukamoto, S Uehara, T Uglov, K Ueno, S Uno, G Varner, K E Varvell, S Villa, C H Wang, M-Z Wang, M Watanabe, B D Yabsley, Y Yamada, A Yamaguchi, Y Yamashita, M Yamauchi, J Ying, Y Yusa, J Zhang, L M Zhang, Z P Zhang, V Zhilich, T Ziegler, D Zontar; Belle Collaboration

Affiliation

¹ Department of Physics, National Taiwan University, Taipei.

PMID: 15903905
DOI: 10.1103/PhysRevLett.94.121801

Abstract

We present a time-dependent analysis of CP violation in B0-->rho(+/-)pi(-/+) decays based on a 140 fb(-1) data sample collected at the Upsilon(4S) resonance with the Belle detector at KEKB. We obtain the charge asymmetry A(rhopi)(CP)=-0.16+/-0.10(stat)+/-0.02(syst). An unbinned maximum-likelihood fit to the Deltat distributions yields C(rhopi)=0.25+/-0.17(stat)+0.02-0.06(syst), DeltaC(rhopi)=0.38+/-0.18(stat)+0.02-0.04(syst), S(rhopi)=-0.28+/-0.23(stat)+0.10-0.08(syst), and DeltaS(rhopi)=-0.30+/-0.24(stat)+/-0.09(syst). The direct CP violation parameters for B-->rho(+)pi(-) and B-->rho(-)pi(+) decays are A(+-)(rhopi)=-0.02+/-0.16(stat)+0.05-0.02(syst) and A(-+)(rhopi)=-0.53+/-0.29(stat)+0.09-0.04(syst).