Time-dependent Dalitz plot measurement of CP parameters in B0→KS0π π- decays

J Dalseno; I Adachi; H Aihara; K Arinstein; T Aushev; AM Bakich; V Balagura; A Bay; V Bhardwaj; U Bitenc; A Bondar; A Bozek; M Bračko; TE Browder; Y Chao; A Chen; BG Cheon; IS Cho; Y Choi; M Dash; A Drutskoy; S Eidelman; M Fujikawa; N Gabyshev; P Goldenzweig; B Golob; H Ha; BY Han; K Hara; K Hayasaka; H Hayashii; M Hazumi; D Heffernan; Y Horii; Y Hoshi; WS Hou; HJ Hyun; K Inami; A Ishikawa; H Ishino; R Itoh; M Iwasaki; Y Iwasaki; DH Kah; JH Kang; N Katayama; H Kawai; T Kawasaki; HO Kim; YI Kim; YJ Kim; K Kinoshita; BR Ko; P Krian; P Krokovny; A Kuzmin; YJ Kwon; SH Kyeong; JS Lee; SE Lee; J Li; SW Lin; C Liu; R Louvot; A Matyja; S McOnie; K Miyabayashi; H Miyata; Y Miyazaki; R Mizuk; Y Nagasaka; Y Nakahama; E Nakano; M Nakao; H Nakazawa; Z Natkaniec; S Nishida; O Nitoh; S Ogawa; S Okuno; H Ozaki; P Pakhlov; G Pakhlova; CW Park; HK Park; KS Park; LS Peak; R Pestotnik; LE Piilonen; M Rozanska; H Sahoo; Y Sakai; O Schneider; C Schwanda; AJ Schwartz; A Sekiya; K Senyo; ME Sevior; M Shapkin; JG Shiu

Journal article

Time-dependent Dalitz plot measurement of CP parameters in B0→KS0π π- decays

J Dalseno, I Adachi, H Aihara, K Arinstein, T Aushev, AM Bakich, V Balagura, A Bay, V Bhardwaj, U Bitenc, A Bondar, A Bozek, M Bračko, TE Browder, Y Chao, A Chen, BG Cheon, IS Cho, Y Choi, M Dash Show all

Physical Review D Particles Fields Gravitation and Cosmology | Published : 2009

DOI: 10.1103/PhysRevD.79.072004

Abstract

We present a time-dependent Dalitz plot measurement of CP violation parameters in B0→KS0π+π- decays. These results are obtained from a large data sample that contains 657×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. For the CP violation parameters, we obtain two consistent solutions that describe the data well. The first of these solutions may be preferred by external information from other measurements. There is no evidence for direct CP violation in B0→ρ0(770)KS0, B0→f0(980)KS0 and B0→K*+(892)π-, while measurements of mixing-induced CP violation in B0→ρ0(770)KS0 and B0→f0(980)KS0 decays are consistent with that of b→cc̄..

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University of Melbourne Researchers

Martin Sevior Author

G. N. Taylor Author

Grants

Funding Acknowledgements

These effects can be taken into account with a time-dependent Dalitz plot fit. In addition, the interference terms in some cases may be sensitive to the cosine of the effective weak phase difference (~ eff 1) in mixing, potentially resolving the two-fold ambiguity in ~eff 1 characteristic.