Measurement of the time-dependent CP asymmetries in B0-->K(S)(0)rho(0)gamma decays

J Li; I Adachi; K Arinstein; T Aushev; A M Bakich; V Balagura; I Bedny; V Bhardwaj; U Bitenc; A Bozek; M Bracko; T E Browder; P Chang; Y Chao; A Chen; B G Cheon; R Chistov; Y Choi; J Dalseno; A Drutskoy; S Eidelman; N Gabyshev; H Ha; K Hara; Y Hasegawa; H Hayashii; M Hazumi; D Heffernan; Y Hoshi; W-S Hou; H J Hyun; T Iijima; A Ishikawa; R Itoh; M Iwasaki; Y Iwasaki; N J Joshi; D H Kah; J H Kang; H Kawai; T Kawasaki; H Kichimi; Y I Kim; Y J Kim; K Kinoshita; S Korpar; P Krizan; P Krokovny; R Kumar; A Kuzmin; S-H Kyeong; C Liu; Y Liu; A Matyja; S McOnie; T Medvedeva; K Miyabayashi; H Miyake; H Miyata; G R Moloney; Y Nagasaka; M Nakao; Z Natkaniec; S Nishida; O Nitoh; S Ogawa; T Ohshima; S Okuno; S L Olsen; H Ozaki; G Pakhlova; C W Park; H Park; H K Park; K S Park; L S Peak; R Pestotnik; L E Piilonen; H Sahoo; Y Sakai; O Schneider; C Schwanda; A Sekiya; K Senyo; M Shapkin; J-G Shiu; B Shwartz; A Sokolov; A Somov; S Stanic; M Staric; T Sumiyoshi; M Tanaka; G N Taylor; Y Teramoto; I Tikhomirov; K Trabelsi; T Tsuboyama; S Uehara; T Uglov; Y Unno; S Uno; P Urquijo; Y Ushiroda; Y Usov; G Varner; K E Varvell; K Vervink; A Vinokurova; C H Wang; P Wang; X L Wang; Y Watanabe; E Won; B D Yabsley; H Yamamoto; Y Yamashita; M Yamauchi; Z P Zhang; V Zhilich; T Zivko; A Zupanc; O Zyukova; Belle Collaboration

doi:10.1103/PhysRevLett.101.251601

Measurement of the time-dependent CP asymmetries in B0-->K(S)(0)rho(0)gamma decays

Phys Rev Lett. 2008 Dec 19;101(25):251601. doi: 10.1103/PhysRevLett.101.251601. Epub 2008 Dec 15.

Authors

J Li¹, I Adachi, K Arinstein, T Aushev, A M Bakich, V Balagura, I Bedny, V Bhardwaj, U Bitenc, A Bozek, M Bracko, T E Browder, P Chang, Y Chao, A Chen, B G Cheon, R Chistov, Y Choi, J Dalseno, A Drutskoy, S Eidelman, N Gabyshev, H Ha, K Hara, Y Hasegawa, H Hayashii, M Hazumi, D Heffernan, Y Hoshi, W-S Hou, H J Hyun, T Iijima, A Ishikawa, R Itoh, M Iwasaki, Y Iwasaki, N J Joshi, D H Kah, J H Kang, H Kawai, T Kawasaki, H Kichimi, Y I Kim, Y J Kim, K Kinoshita, S Korpar, P Krizan, P Krokovny, R Kumar, A Kuzmin, S-H Kyeong, C Liu, Y Liu, A Matyja, S McOnie, T Medvedeva, K Miyabayashi, H Miyake, H Miyata, G R Moloney, Y Nagasaka, M Nakao, Z Natkaniec, S Nishida, O Nitoh, S Ogawa, T Ohshima, S Okuno, S L Olsen, H Ozaki, G Pakhlova, C W Park, H Park, H K Park, K S Park, L S Peak, R Pestotnik, L E Piilonen, H Sahoo, Y Sakai, O Schneider, C Schwanda, A Sekiya, K Senyo, M Shapkin, J-G Shiu, B Shwartz, A Sokolov, A Somov, S Stanic, M Staric, T Sumiyoshi, M Tanaka, G N Taylor, Y Teramoto, I Tikhomirov, K Trabelsi, T Tsuboyama, S Uehara, T Uglov, Y Unno, S Uno, P Urquijo, Y Ushiroda, Y Usov, G Varner, K E Varvell, K Vervink, A Vinokurova, C H Wang, P Wang, X L Wang, Y Watanabe, E Won, B D Yabsley, H Yamamoto, Y Yamashita, M Yamauchi, Z P Zhang, V Zhilich, T Zivko, A Zupanc, O Zyukova; Belle Collaboration

Affiliation

¹ University of Hawaii, Honolulu, Hawaii 96822, USA.

PMID: 19113693
DOI: 10.1103/PhysRevLett.101.251601

Abstract

We report the first measurement of time-dependent CP asymmetry in B(0)-->K(S)(0)rho(0)gamma decays based on 657 x 10(6) BB pairs collected with the Belle detector at the KEKB asymmetric-energy collider. We measure the CP-violating parameter S_{K_{S};{0}rho;{0}gamma}=0.11+/-0.33(stat)-0.09+0.05(syst) from a signal of 212+/-17 events. We also obtain the effective direct CP-violating parameter A{eff}=0.05+/-0.18(stat)+/-0.06(syst) for mK(S)0pi+pi- <1.8 GeV/c(2) and 0.6 GeV/c(2)<m pi+pi- <0.9 GeV/c2.