Measurement of 3 with a Dalitz plot analysis of B →D(*) K(*) decay

A Poluektov; K Abe; K Abe; I Adachi; H Aihara; D Anipko; K Arinstein; T Aushev; S Bahinipati; AM Bakich; V Balagura; E Barberio; M Barbero; I Bedny; K Belous; U Bitenc; I Bizjak; S Blyth; A Bondar; A Bozek; M Bračko; TE Browder; P Chang; Y Chao; A Chen; WT Chen; BG Cheon; R Chistov; Y Choi; A Chuvikov; J Dalseno; M Danilov; M Dash; A Drutskoy; S Eidelman; D Epifanov; S Fratina; N Gabyshev; A Garmash; T Gershon; G Gokhroo; B Golob; A Gorišek; J Haba; T Hara; K Hayasaka; H Hayashii; M Hazumi; T Hokuue; Y Hoshi; WS Hou; T Iijima; K Ikado; K Inami; A Ishikawa; H Ishino; R Itoh; Y Iwasaki; H Kawai; T Kawasaki; HR Khan; HJ Kim; K Kinoshita; S Korpar; P Križan; P Krokovny; R Kulasiri; R Kumar; CC Kuo; A Kuzmin; YJ Kwon; J Lee; T Lesiak; J Li; D Liventsev; J MacNaughton; G Majumder; F Mandl; D Marlow; T Matsumoto; A Matyja; S McOnie; W Mitaroff; K Miyabayashi; H Miyake; H Miyata; D Mohapatra; T Nagamine; I Nakamura; E Nakano; Z Natkaniec; S Nishida; O Nitoh; S Noguchi; T Nozaki; S Ogawa; T Ohshima; S Okuno; SL Olsen; Y Onuki

Journal article

Measurement of 3 with a Dalitz plot analysis of B →D() K() decay

A Poluektov, K Abe, K Abe, I Adachi, H Aihara, D Anipko, K Arinstein, T Aushev, S Bahinipati, AM Bakich, V Balagura, E Barberio, M Barbero, I Bedny, K Belous, U Bitenc, I Bizjak, S Blyth, A Bondar, A Bozek Show all

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

DOI: 10.1103/PhysRevD.73.112009

Abstract

We present a measurement of the unitarity triangle angle 3 using a Dalitz plot analysis of the KS0π+π- decay of the neutral D meson from the B±→D(*)K(*)± process. The method exploits the interference between D0 and D̄0 to extract the angle 3, strong phase δ and the ratio r of suppressed and allowed amplitudes. We apply this method to a 357fb-1 data sample collected by the Belle experiment. The analysis uses three modes: B+→DK+, B+→D*K+ with D*→Dπ0, and B+→DK*+ with K*+→KS0π+, as well as the corresponding charge-conjugate modes. From a combined maximum likelihood fit to the three modes, we obtain 3=53°+15°-18°(stat)±3°(syst) ±9°(model). The corresponding 2 standard deviation interval is 8°<3<..

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