Measurement of D0-(D)over-bar0 mixing parameters in D0→Ksπ+π- decays

被引：66
|
作者：
Zhang, L. M. [1 ]
Zhang, Z. P.
Adachi, I.
Aihara, H.
Aulchenko, V.
Aushev, T.
Bakich, A. M.
Balagura, V.
Barberio, E.
Bay, A.
Belous, K.
Bitenc, U.
Bondar, A.
Bozek, A.
Bracko, M.
Brodzicka, J.
Browder, T. E.
Chang, P.
Chao, Y.
Chen, A.
Chen, K.-F.
Chen, W. T.
Cheon, B. G.
Chiang, C.-C.
Cho, I.-S.
Choi, Y.
Choi, Y. K.
Dalseno, J.
Danilov, M.
Dash, M.
Drutskoy, A.
Eidelman, S.
Epifanov, D.
Fratina, S.
Gabyshev, N.
Gokhroo, G.
Golob, B.
Ha, H.
Haba, J.
Hara, T.
Hastings, N. C.
Hayasaka, K.
Hayashii, H.
Hazumi, M.
Heffernan, D.
Hokuue, T.
Hoshi, Y.
Hou, W.-S.
Hsiung, Y. B.
Hyun, H. J.
机构：
[1] Univ Sci & Technol China, Hefei 230026, Peoples R China
[2] Budker Inst Nucl Phys, Novosibirsk 630090, Russia
[3] Chiba Univ, Chiba, Japan
[4] Univ Cincinnati, Cincinnati, OH 45221 USA
[5] Hanyang Univ, Seoul 133791, South Korea
[6] Univ Hawaii, Honolulu, HI 96822 USA
[7] High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki, Japan
[8] Hiroshima Inst Technol, Hiroshima, Japan
[9] Univ Illinois, Urbana, IL 61801 USA
[10] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China
[11] Inst High Energy Phys, Vienna, Austria
[12] Inst High Energy Phys, Protvino, Russia
[13] Inst Theoret & Expt Phys, Moscow 117259, Russia
[14] Jozef Stefan Inst, Ljubljana, Slovenia
[15] Kanagawa Univ, Yokohama, Kanagawa, Japan
[16] Korea Univ, Seoul 136701, South Korea
[17] Kyungpook Natl Univ, Taegu 702701, South Korea
[18] Ecole Polytech Fed Lausanne, Swiss Fed Inst Technol, CH-1015 Lausanne, Switzerland
[19] Univ Ljubljana, Ljubljana, Slovenia
[20] Univ Maribor, SLO-2000 Maribor, Slovenia
[21] Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia
[22] Nagoya Univ, Nagoya, Aichi, Japan
[23] Nara Womens Univ, Nara 630, Japan
[24] Natl Cent Univ, Chungli 32054, Taiwan
[25] Natl United Univ, Miaoli, Taiwan
[26] Natl Taiwan Univ, Dept Phys, Taipei 10764, Taiwan
[27] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
[28] Nippon Dent Univ, Niigata, Japan
[29] Niigata Univ, Niigata, Japan
[30] Univ Nova Gorica, Nova Gorica, Slovenia
[31] Osaka City Univ, Osaka 558, Japan
[32] Osaka Univ, Osaka, Japan
[33] Panjab Univ, Chandigarh 160014, India
[34] Peking Univ, Beijing 100871, Peoples R China
[35] Brookhaven Natl Lab, Res Ctr, RIKEN, Upton, NY 11973 USA
[36] Saga Univ, Saga 840, Japan
[37] Univ Sci & Technol China, Hefei 230026, Peoples R China
[38] Seoul Natl Univ, Seoul, South Korea
[39] Sungkyunkwan Univ, Suwon, South Korea
[40] Univ Sydney, Sydney, NSW 2006, Australia
[41] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
[42] Toho Univ, Funabashi, Chiba 274, Japan
[43] Tohoku Gakuin Univ, Tagajo, Miyagi, Japan
[44] Tohoku Univ, Sendai, Miyagi 980, Japan
[45] Univ Tokyo, Dept Phys, Tokyo 113, Japan
[46] Tokyo Inst Technol, Tokyo 152, Japan
[47] Tokyo Metropolitan Univ, Tokyo 158, Japan
[48] Tokyo Univ Agr & Technol, Tokyo, Japan
[49] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA
[50] Yonsei Univ, Seoul 120749, South Korea
来源：
PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 13期
关键词：
D O I：
10.1103/PhysRevLett.99.131803
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report a measurement of D-0-(D) over bar (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.
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页数：6
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