Measurement of the CP asymmetry in B → Xsγ

S Nishida; K Abe; K Abe; T Abe; H Aihara; Y Asano; T Aushev; S Bahinipati; AM Bakich; Y Ban; E Banas; A Bay; U Bitenc; I Bizjak; S Blyth; A Bondar; A Bozek; M Bračko; J Brodzicka; TE Browder; MC Chang; P Chang; KF Chen; BG Cheon; R Chistov; SK Choi; Y Choi; A Chuvikov; S Cole; M Danilov; M Dash; LY Dong; J Dragic; S Eidelman; V Eiges; Y Enari; D Epifanov; F Fang; S Fratina; A Garmash; T Gershon; G Gokhroo; B Golob; J Haba; T Hara; NC Hastings; H Hayashii; M Hazumi; T Higuchi; L Hinz; Y Hoshi; WS Hou; YB Hsiung; T Iijima; K Inami; A Ishikawa; H Ishino; R Itoh; M Iwasaki; Y Iwasaki; JH Kang; JS Kang; P Kapusta; SU Kataoka; N Katayama; T Kawasaki; H Kichimi; HJ Kim; SK Kim; TH Kim; P Koppenburg; S Korpar; P Križan; P Krokovny; A Kuzmin; YJ Kwon; JS Lange; G Leder; SE Lee; SH Lee; J Li; SW Lin; J MacNaughton; G Majumder; F Mandl; T Matsumoto; A Matyja; W Mitaroff; H Miyake; R Mizuk; D Mohapatra; GR Moloney; A Murakami; T Nagamine; Y Nagasaka; E Nakano; M Nakao; H Nakazawa; Z Natkaniec; O Nitoh

Journal article

Measurement of the CP asymmetry in B → Xsγ

S Nishida, K Abe, K Abe, T Abe, H Aihara, Y Asano, T Aushev, S Bahinipati, AM Bakich, Y Ban, E Banas, A Bay, U Bitenc, I Bizjak, S Blyth, A Bondar, A Bozek, M Bračko, J Brodzicka, TE Browder Show all

Physical Review Letters | AMER PHYSICAL SOC | Published : 2004

DOI: 10.1103/PhysRevLett.93.031803

Abstract

The CP asymmetry in the B → Xsγ, where hadronic recoil system Xs is reconstructed, was investigated using pseudoreconstruction technique. Negligible contamination from b → dγ decays was observed, which were expected to have larger CP asymmetry. The qq̄ and BB̄ distributions were obtained from off-resonance data and Monte Carlo (MC) simulation. The results show that 50% error is assigned to Gaussian width and to ratio of the Gaussian and ARGUS function for rare B decays.