Measurement of time-dependent CP-violating parameters in B(0)-->K_(S)(0)K_(S)(0) decays

Y Nakahama; K Sumisawa; I Adachi; H Aihara; T Aushev; A M Bakich; V Balagura; E Barberio; I Bedny; K Belous; U Bitenc; A Bondar; A Bozek; M Bracko; T E Browder; P Chang; Y Chao; A Chen; K-F Chen; W T Chen; B G Cheon; R Chistov; I-S Cho; Y Choi; J Dalseno; M Dash; A Drutskoy; S Eidelman; N Gabyshev; B Golob; H Ha; J Haba; K Hara; T Hara; K Hayasaka; M Hazumi; D Heffernan; Y Hoshi; Y B Hsiung; H J Hyun; T Iijima; K Inami; A Ishikawa; H Ishino; R Itoh; M Iwasaki; Y Iwasaki; D H Kah; H Kaji; J H Kang; N Katayama; H Kawai; T Kawasaki; H Kichimi; H J Kim; H O Kim; Y J Kim; K Kinoshita; S Korpar; P Krizan; P Krokovny; R Kumar; C C Kuo; A Kuzmin; Y-J Kwon; J Lee; J S Lee; M J Lee; S E Lee; T Lesiak; A Limosani; S-W Lin; D Liventsev; F Mandl; S McOnie; T Medvedeva; W Mitaroff; K Miyabayashi; H Miyata; Y Miyazaki; R Mizuk; G R Moloney; E Nakano; M Nakao; H Nakazawa; Z Natkaniec; S Nishida; O Nitoh; T Nozaki; S Ogawa; T Ohshima; S Okuno; S L Olsen; H Ozaki; P Pakhlov; G Pakhlova; C W Park; H Park; K S Park; R Pestotnik; L E Piilonen; H Sahoo; Y Sakai; O Schneider; C Schwanda; A J Schwartz; R Seidl; M E Sevior; M Shapkin; C P Shen; H Shibuya; J-G Shiu; B Shwartz; J B Singh; A Somov; S Stanic; M Staric; T Sumiyoshi; O Tajima; F Takasaki; N Tamura; M Tanaka; G N Taylor; Y Teramoto; I Tikhomirov; K Trabelsi; T Tsuboyama; S Uehara; K Ueno; T Uglov; Y Unno; S Uno; Y Ushiroda; G Varner; K Vervink; C H Wang; P Wang; X L Wang; Y Watanabe; E Won; Y Yamashita; Y Yusa; Z P Zhang; A Zupanc; O Zyukova; Belle Collaboration

doi:10.1103/PhysRevLett.100.121601

Measurement of time-dependent CP-violating parameters in B(0)-->K_(S)(0)K_(S)(0) decays

Phys Rev Lett. 2008 Mar 28;100(12):121601. doi: 10.1103/PhysRevLett.100.121601. Epub 2008 Mar 27.

Authors

Y Nakahama¹, K Sumisawa, I Adachi, H Aihara, T Aushev, A M Bakich, V Balagura, E Barberio, I Bedny, K Belous, U Bitenc, A Bondar, A Bozek, M Bracko, T E Browder, P Chang, Y Chao, A Chen, K-F Chen, W T Chen, B G Cheon, R Chistov, I-S Cho, Y Choi, J Dalseno, M Dash, A Drutskoy, S Eidelman, N Gabyshev, B Golob, H Ha, J Haba, K Hara, T Hara, K Hayasaka, M Hazumi, D Heffernan, Y Hoshi, Y B Hsiung, H J Hyun, T Iijima, K Inami, A Ishikawa, H Ishino, R Itoh, M Iwasaki, Y Iwasaki, D H Kah, H Kaji, J H Kang, N Katayama, H Kawai, T Kawasaki, H Kichimi, H J Kim, H O Kim, Y J Kim, K Kinoshita, S Korpar, P Krizan, P Krokovny, R Kumar, C C Kuo, A Kuzmin, Y-J Kwon, J Lee, J S Lee, M J Lee, S E Lee, T Lesiak, A Limosani, S-W Lin, D Liventsev, F Mandl, S McOnie, T Medvedeva, W Mitaroff, K Miyabayashi, H Miyata, Y Miyazaki, R Mizuk, G R Moloney, E Nakano, M Nakao, H Nakazawa, Z Natkaniec, S Nishida, O Nitoh, T Nozaki, S Ogawa, T Ohshima, S Okuno, S L Olsen, H Ozaki, P Pakhlov, G Pakhlova, C W Park, H Park, K S Park, R Pestotnik, L E Piilonen, H Sahoo, Y Sakai, O Schneider, C Schwanda, A J Schwartz, R Seidl, M E Sevior, M Shapkin, C P Shen, H Shibuya, J-G Shiu, B Shwartz, J B Singh, A Somov, S Stanic, M Staric, T Sumiyoshi, O Tajima, F Takasaki, N Tamura, M Tanaka, G N Taylor, Y Teramoto, I Tikhomirov, K Trabelsi, T Tsuboyama, S Uehara, K Ueno, T Uglov, Y Unno, S Uno, Y Ushiroda, G Varner, K Vervink, C H Wang, P Wang, X L Wang, Y Watanabe, E Won, Y Yamashita, Y Yusa, Z P Zhang, A Zupanc, O Zyukova; Belle Collaboration

Affiliation

¹ Department of Physics, University of Tokyo, Tokyo.

PMID: 18517853
DOI: 10.1103/PhysRevLett.100.121601

Abstract

We report a measurement of the CP-violating parameters in B;{0}-->K_{S}{0}K_{S}{0} decays based on a data sample of 657x10{6} BB[over ] pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e;{+}e{-} collider. In this Letter, one neutral B meson is fully reconstructed in the B;{0}-->K_{S}{0}K_{S}{0} decay mode, and the flavor of the accompanying B meson is identified by its decay products. The CP-violating parameters are measured from the asymmetry in the distributions of the proper-time interval between the two B decays: S_K_{S}{0}K_{S}{0}}=-0.38_{-0.77}{+0.69}(stat)+/-0.09(syst) and A_{K_{S}{0}K_{S}{0}}=-0.38+/-0.38(stat)+/-0.05(syst).

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.