Study of B 0 → ρ±π∓ 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 Bračko; TE Browder; P Chang; Y Chao; KF Chen; WT Chen; BC 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 Križan; 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

Journal article

Study of B 0 → ρ±π∓ 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 Bračko, 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 B 0→ rho;±π∓ decays based on a 140 fb -1 data sample collected at the υ(4S) resonance with the Belle detector at KEKB. We obtain the charge asymmetry A CP ρπ = -0.16 ±0.10(stat) ±0.02(syst). An unbinned maximum-likelihood fit to the Δt distributions yields C ρπ = 0.25 ± 0.17(stat) -0.02 +0.02(syst), ΔC ρπ = 0.38 ±0.18(stat) -0.04 +0.02(syst), S ρπ = -0.28 ±0.23(stat) -0.08 +0.10(syst), and ΔS ρπ = -0.30 ±0.24(stat) ±0.09(syst). The direct CP violation parameters for B→ρ +π -B→ρ -π + decays are A ρπ +- = -0.02 ±0.16(stat) -0.02 +0.5(syst) and A ρπ -+ = -0.53 ±0.29(stat) -0.04 +0.9(syst). © 2005 The American Physical Society.