Evidence for direct CP violation in B 0 → K π - decays

Y Chao; P Chang; K Abe; K Abe; N Abe; I Adachi; H Aihara; K Akai; M Akatsu; M Akemoto; Y Asano; T Aso; V Aulchenko; T Aushev; T Aziz; S Bahinipati; AM Bakich; Y Ban; M Barbero; A Bay; I Bedny; U Bitenc; I Bizjak; S Blyth; A Bondar; A Bozek; M Bračko; J Brodzicka; TE Browder; MC Chang; A Chen; KF Chen; WT Chen; BG Cheon; R Chistov; SK Choi; Y Choi; YK Choi; A Chuvikov; S Cole; M Danilov; M Dash; LY Dong; R Dowd; J Dragic; A Drutskoy; S Eidelman; V Eiges; Y Enari; D Epifanov; CW Everton; F Fang; J Flanagan; S Fratina; H Fujii; Y Funakoshi; K Furukawa; N Gabyshev; A Garmash; T Gershon; A Go; G Gokhroo; B Golob; M Grosse Perdekamp; H Guler; R Guo; J Haba; C Hagner; F Handa; K Hara; T Hara; NC Hastings; K Hasuko; K Hayasaka; H Hayashii; M Hazumi; EM Heenan; I Higuchi; T Higuchi; L Hinz; T Hojo; T Hokuue; Y Hoshi; K Hoshina; S Hou; WS Hou; YB Hsiung; HC Huang; T Igaki; Y Igarashi; T Iijima; H Ikeda; A Imoto; K Inami; A Ishikawa; H Ishino; K Itoh; R Itoh; M Iwamoto; M Iwasaki

Journal article

Evidence for direct CP violation in B 0 → K π - decays

Y Chao, P Chang, K Abe, K Abe, N Abe, I Adachi, H Aihara, K Akai, M Akatsu, M Akemoto, Y Asano, T Aso, V Aulchenko, T Aushev, T Aziz, S Bahinipati, AM Bakich, Y Ban, M Barbero, A Bay Show all

Physical Review Letters | AMER PHYSICAL SOC | Published : 2004

DOI: 10.1103/PhysRevLett.93.191802

Abstract

The evidence for direct charged particles (CP) violation in the decay B 0→K + π - was investigated with 253 fb -1 of data collected with the Belle detector at the KEKB e + e - collider. 275 x 10 6 BB̄ pairs were used to observe a B→K ±π ∓ signal with 2140 ±53 events. Mixing induced CP violation in the B sector was established in b → cc̄s transitions. The result suggests large interference between tree and penguin diagrams and the existence of final state interactions.