Measurement of branching fraction and direct CP asymmetry in B0→ρ0π0 decays

J Dragic; K Abe; K Abe; I Adachi; H Aihara; D Anipko; Y Asano; T Aushev; S Bahinipati; AM Bakich; V Balagura; M Barbero; A Bay; I Bedny; U Bitenc; I Bizjak; S Blyth; A Bondar; A Bozek; M Bračko; J Brodzicka; TE Browder; MC Chang; P Chang; Y Chao; A Chen; WT Chen; BG Cheon; R Chistov; Y Choi; YK Choi; A Chuvikov; S Cole; J Dalseno; M Danilov; M Dash; A Drutskoy; S Eidelman; N Gabyshev; A Garmash; T Gershon; A Go; G Gokhroo; B Golob; A Goriek; HC Ha; J Haba; T Hara; NC Hastings; K Hayasaka; H Hayashii; M Hazumi; L Hinz; Y Hoshi; S Hou; WS Hou; YB Hsiung; T Iijima; K Ikado; K Inami; A Ishikawa; H Ishino; R Itoh; M Iwasaki; Y Iwasaki; C Jacoby; JH Kang; P Kapusta; N Katayama; H Kawai; T Kawasaki; H Kichimi; HJ Kim; SK Kim; SM Kim; K Kinoshita; S Korpar; P Krian; P Krokovny; R Kulasiri; CC Kuo; A Kusaka; A Kuzmin; YJ Kwon; G Leder; J Lee; T Lesiak; J Li; A Limosani; SW Lin; D Liventsev; J MacNaughton; F Mandl; D Marlow; T Matsumoto; Y Mikami; W Mitaroff; K Miyabayashi; H Miyake; H Miyata

Journal article

Measurement of branching fraction and direct CP asymmetry in B0→ρ0π0 decays

J Dragic, K Abe, K Abe, I Adachi, H Aihara, D Anipko, Y Asano, T Aushev, S Bahinipati, AM Bakich, V Balagura, M Barbero, A Bay, I Bedny, U Bitenc, I Bizjak, S Blyth, A Bondar, A Bozek, M Bračko Show all

Physical Review D Particles Fields Gravitation and Cosmology | AMER PHYSICAL SOC | Published : 2006

DOI: 10.1103/PhysRevD.73.111105

Abstract

We report a measurement of the branching fraction of the decay B0→ρ0π0, using 386×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We detect 51-13+14 signal events with a significance of 4.2 standard deviations, including systematic uncertainties, and measure the branching fraction to be B(B0→ρ0π0)=(3.12-0.82+0.88(stat)±0.33(syst)-0. 68+0.50(model))×10-6. We also perform the first measurement of direct CP violating asymmetry in this mode. © 2006 The American Physical Society.