Study of B-0 -> rho( /-)pi(-/ ) time-dependent CP violation at Belle

CC Wang; K Abe; K Abe; T Abe; I Adachi; H Aihara; Y Asano; T Aushev; AM Bakich; Y Ban; A Bay; I Bedny; U Bitenc; I Bizjak; S Blyth; A Bondar; A Bozek; M Bracko; TE Browder; P Chang; Y Chao; KF Chen; WT Chen; BG Cheon; SK Choi; Y Choi; A Chuvikov; S Cole; M Dash; LY Dong; J Dragic; A Drutskoy; S Eidelman; V Eiges; T Gershon; G Gokhroo; R Guo; J Haba; NC Hastings; K Hayasaka; H Hayashii; M Hazumi; T Hokuue; Y Hoshi; S Hou; WS Hou; YB Hsiung; T Iijima; A Imoto; K Inami; A Ishikawa; H Ishino; K Itoh; R Itoh; H Iwasaki; Y Iwasaki; H Kakuno; JH Kang; JS Kang; P Kapusta; N Katayama; T Kawasaki; HR Khan; H Kichimi; HJ Kim; K Kinoshita; P Krizan; P Krokovny; S Kumar; YJ Kwon; JS Lange; SE Lee; YJ Lee; T Lesiak; J Li; A Limosani; SW 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; SL Olsen; W Ostrowicz; H Ozaki; P Pakhlov; CW Park; N Parslow; LS Peak; LE Piilonen; FJ Ronga; M Rozanska; H Sagawa; S Saitoh; Y Sakai; N Sato; T Schietinger; O Schneider; J Schumann; AJ Schwartz; S Semenov; K Senyo; ME Sevior; H Shibuya; JB Singh; A Somov; R Stamen; S Stanic; M Staric; K Sumisawa; T Sumiyoshi; SY Suzuki; O Tajima; F Takasaki; K Tamai; M Tanaka; GN Taylor; Y Teramoto; XC Tian; K Trabelsi; T Tsukamoto; S Uehara; T Uglov; K Ueno; S Uno; G Varner; KE Varvell; S Villa; CH Wang; MZ Wang; M Watanabe; BD Yabsley; Y Yamada; A Yamaguchi; Y Yamashita; M Yamauchi; J Ying; Y Yusa; J Zhang; LM Zhang; ZP Zhang; V Zhilich; T Ziegler; D Zontar

Journal article

Study of B-0 -> rho( /-)pi(-/ ) time-dependent CP violation at Belle

CC Wang, K Abe, K Abe, T Abe, I Adachi, H Aihara, Y Asano, T Aushev, AM Bakich, Y Ban, A Bay, I Bedny, U Bitenc, I Bizjak, S Blyth, A Bondar, A Bozek, M Bracko, TE Browder, P Chang Show all

PHYSICAL REVIEW LETTERS | AMER PHYSICAL SOC | Published : 2005

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..

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