Measurement of D0-D0 mixing parameters in D0 --> Ks pi+ pi- decays

L M Zhang; Z P Zhang; I Adachi; H Aihara; V Aulchenko; T Aushev; A M Bakich; V Balagura; E Barberio; A Bay; K Belous; U Bitenc; A Bondar; A Bozek; M Bracko; J Brodzicka; T E Browder; P Chang; Y Chao; A Chen; K-F Chen; W T Chen; B G Cheon; C-C Chiang; I-S Cho; Y Choi; Y K Choi; J Dalseno; M Danilov; M Dash; A Drutskoy; S Eidelman; D Epifanov; S Fratina; N Gabyshev; G Gokhroo; B Golob; H Ha; J Haba; T Hara; N C Hastings; K Hayasaka; H Hayashii; M Hazumi; D Heffernan; T Hokuue; Y Hoshi; W-S Hou; Y B Hsiung; H J Hyun; T Iijima; K Ikado; K Inami; A Ishikawa; H Ishino; R Itoh; M Iwasaki; Y Iwasaki; N J Joshi; D H Kah; H Kaji; S Kajiwara; J H Kang; H Kawai; T Kawasaki; H Kichimi; H J Kim; H O Kim; S K Kim; Y J Kim; K Kinoshita; S Korpar; P Krizan; P Krokovny; R Kumar; C C Kuo; A Kuzmin; Y-J Kwon; J S Lee; M J Lee; S E Lee; T Lesiak; J Li; A Limosani; S-W Lin; Y Liu; D Liventsev; T Matsumoto; A Matyja; S McOnie; T Medvedeva; W Mitaroff; H Miyake; H Miyata; Y Miyazaki; R Mizuk; Y Nagasaka; I Nakamura; E Nakano; M Nakao; Z Natkaniec; S Nishida; O Nitoh; S Ogawa; T Ohshima; S Okuno; S L Olsen; Y Onuki; W Ostrowicz; H Ozaki; P Pakhlov; G Pakhlova; C W Park; H Park; L S Peak; R Pestotnik; L E Piilonen; A Poluektov; H Sahoo; Y Sakai; O Schneider; J Schümann; C Schwanda; A J Schwartz; R Seidl; K Senyo; M E Sevior; M Shapkin; H Shibuya; S Shinomiya; J-G Shiu; B Shwartz; J B Singh; A Sokolov; A Somov; N Soni; S Stanic; M Staric; H Stoeck; K Sumisawa; T Sumiyoshi; S Suzuki; O Tajima; F Takasaki; K Tamai; N Tamura; M Tanaka; G N Taylor; Y Teramoto; X C Tian; I Tikhomirov; T Tsuboyama; S Uehara; K Ueno; T Uglov; Y Unno; S Uno; P Urquijo; Y Usov; G Varner; K Vervink; S Villa; A Vinokurova; C H Wang; M-Z Wang; P Wang; Y Watanabe; E Won; B D Yabsley; A Yamaguchi; Y Yamashita; M Yamauchi; C Z Yuan; C C Zhang; V Zhilich; A Zupanc; Belle Colaboration

doi:10.1103/PhysRevLett.99.131803

Measurement of D0-D0 mixing parameters in D0 --> Ks pi+ pi- decays

Phys Rev Lett. 2007 Sep 28;99(13):131803. doi: 10.1103/PhysRevLett.99.131803. Epub 2007 Sep 28.

Authors

L M Zhang¹, Z P Zhang, I Adachi, H Aihara, V Aulchenko, T Aushev, A M Bakich, V Balagura, E Barberio, A Bay, K Belous, U Bitenc, A Bondar, A Bozek, M Bracko, J Brodzicka, T E Browder, P Chang, Y Chao, A Chen, K-F Chen, W T Chen, B G Cheon, C-C Chiang, I-S Cho, Y Choi, Y K Choi, J Dalseno, M Danilov, M Dash, A Drutskoy, S Eidelman, D Epifanov, S Fratina, N Gabyshev, G Gokhroo, B Golob, H Ha, J Haba, T Hara, N C Hastings, K Hayasaka, H Hayashii, M Hazumi, D Heffernan, T Hokuue, Y Hoshi, W-S Hou, Y B Hsiung, H J Hyun, T Iijima, K Ikado, K Inami, A Ishikawa, H Ishino, R Itoh, M Iwasaki, Y Iwasaki, N J Joshi, D H Kah, H Kaji, S Kajiwara, J H Kang, H Kawai, T Kawasaki, H Kichimi, H J Kim, H O Kim, S K Kim, Y J Kim, K Kinoshita, S Korpar, P Krizan, P Krokovny, R Kumar, C C Kuo, A Kuzmin, Y-J Kwon, J S Lee, M J Lee, S E Lee, T Lesiak, J Li, A Limosani, S-W Lin, Y Liu, D Liventsev, T Matsumoto, A Matyja, S McOnie, T Medvedeva, W Mitaroff, H Miyake, H Miyata, Y Miyazaki, R Mizuk, Y Nagasaka, I Nakamura, E Nakano, M Nakao, Z Natkaniec, S Nishida, O Nitoh, S Ogawa, T Ohshima, S Okuno, S L Olsen, Y Onuki, W Ostrowicz, H Ozaki, P Pakhlov, G Pakhlova, C W Park, H Park, L S Peak, R Pestotnik, L E Piilonen, A Poluektov, H Sahoo, Y Sakai, O Schneider, J Schümann, C Schwanda, A J Schwartz, R Seidl, K Senyo, M E Sevior, M Shapkin, H Shibuya, S Shinomiya, J-G Shiu, B Shwartz, J B Singh, A Sokolov, A Somov, N Soni, S Stanic, M Staric, H Stoeck, K Sumisawa, T Sumiyoshi, S Suzuki, O Tajima, F Takasaki, K Tamai, N Tamura, M Tanaka, G N Taylor, Y Teramoto, X C Tian, I Tikhomirov, T Tsuboyama, S Uehara, K Ueno, T Uglov, Y Unno, S Uno, P Urquijo, Y Usov, G Varner, K Vervink, S Villa, A Vinokurova, C H Wang, M-Z Wang, P Wang, Y Watanabe, E Won, B D Yabsley, A Yamaguchi, Y Yamashita, M Yamauchi, C Z Yuan, C C Zhang, V Zhilich, A Zupanc; Belle Colaboration

Affiliation

¹ University of Science and Technology of China, Hefei.

PMID: 17930576
DOI: 10.1103/PhysRevLett.99.131803

Abstract

We report a measurement of D0-D(0) mixing parameters in D(0) --> K(s)(0) pi(+) pi(-) decays using a time-dependent Dalitz-plot analysis. We first assume CP conservation and subsequently allow for CP violation. The results are based on 540 fb(-1) of data accumulated with the Belle detector at the KEKB e(+)e(-) collider. Assuming negligible CP violation, we measure the mixing parameters x = (0.80 +/- 0.29(-0.07-0.14)(+0.09+0.10))% and y = (0.33+/-0.24(-0.12-0.08)(+0.08+0.06))%, where the errors are statistical, experimental systematic, and systematic due to the Dalitz decay model, respectively. Allowing for CP violation, we obtain the CP-violating parameters |q / p| = 0.86(-0.29-0.03)(+0.30+0.06) +/- 0.08 and arg(q/p) = (-14(-18-3-4)(+16+5+2)) degrees .