Search for leptonic decays of D0 mesons

被引:30
|
作者
Petric, M. [1 ]
Staric, M. [1 ]
Adachi, I. [8 ]
Aihara, H. [41 ]
Arinstein, K. [2 ,30 ]
Aushev, T. [12 ,18 ]
Bakich, A. M. [36 ]
Balagura, V. [12 ]
Barberio, E. [22 ]
Belous, K. [11 ]
Bhardwaj, V. [32 ]
Bracko, M. [1 ,20 ]
Browder, T. E. [7 ]
Chen, A. [25 ]
Chen, P. [26 ]
Cheon, B. G. [6 ]
Cho, I. -S. [45 ]
Choi, Y. [35 ]
Dalseno, J. [21 ,38 ]
Danilov, M. [12 ]
Das, A. [37 ]
Dolezal, Z. [3 ]
Drutskoy, A. [4 ]
Dungel, W. [10 ]
Eidelman, S. [2 ,30 ]
Gabyshev, N. [2 ,30 ]
Goldenzweig, P. [4 ]
Golob, B. [1 ,19 ]
Ha, H. [16 ]
Haba, J. [8 ]
Hayashii, H. [24 ]
Horii, Y. [40 ]
Hoshi, Y. [39 ]
Hou, W. -S. [26 ]
Hyun, H. J. [17 ]
Iijima, T. [23 ]
Inami, K. [23 ]
Itoh, R. [8 ]
Iwabuchi, M. [45 ]
Iwasaki, Y. [8 ]
Joshi, N. J. [37 ]
Julius, T. [22 ]
Katayama, N. [8 ]
Kawasaki, T. [29 ]
Kiesling, C. [21 ]
Kim, H. J. [17 ]
Kim, H. O. [17 ]
Kim, M. J. [17 ]
Kim, S. K. [34 ]
Ko, B. R. [16 ]
机构
[1] Jozef Stefan Inst, Ljubljana, Slovenia
[2] Budker Inst Nucl Phys, Novosibirsk 630090, Russia
[3] Charles Univ Prague, Fac Math & Phys, Prague, Czech Republic
[4] Univ Cincinnati, Cincinnati, OH 45221 USA
[5] Univ Giessen, Giessen, Germany
[6] Hanyang Univ, Seoul 133791, South Korea
[7] Univ Hawaii, Honolulu, HI 96822 USA
[8] High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki, Japan
[9] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China
[10] Inst High Energy Phys, Vienna, Austria
[11] Inst High Energy Phys, Protvino, Russia
[12] Inst Theoret & Expt Phys, Moscow, Russia
[13] Kanagawa Univ, Yokohama, Kanagawa, Japan
[14] Karlsruhe Inst Technol, Karlsruhe, Germany
[15] Univ Karlsruhe, Inst Expt Kernphys, D-7500 Karlsruhe, Germany
[16] Korea Univ, Seoul, South Korea
[17] Kyungpook Natl Univ, Taegu 702701, South Korea
[18] Ecole Polytech Fed Lausanne, Lausanne, Switzerland
[19] Univ Ljubljana, Fac Math & Phys, Ljubljana, Slovenia
[20] Univ Maribor, SLO-2000 Maribor, Slovenia
[21] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany
[22] Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia
[23] Nagoya Univ, Nagoya, Aichi 4648601, Japan
[24] Nara Womens Univ, Nara 630, Japan
[25] Natl Cent Univ, Chungli 32054, Taiwan
[26] Natl Taiwan Univ, Dept Phys, Taipei, Taiwan
[27] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
[28] Nippon Dent Univ, Niigata, Japan
[29] Niigata Univ, Niigata, Japan
[30] Novosibirsk State Univ, Novosibirsk 630090, Russia
[31] Osaka City Univ, Osaka 558, Japan
[32] Panjab Univ, Chandigarh 160014, India
[33] Univ Sci & Technol China, Hefei 230026, Peoples R China
[34] Seoul Natl Univ, Seoul, South Korea
[35] Sungkyunkwan Univ, Suwon, South Korea
[36] Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia
[37] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
[38] Tech Univ Munich, Excellence Cluster Universe, D-8046 Garching, Germany
[39] Tohoku Gakuin Univ, Tagajo, Miyagi, Japan
[40] Tohoku Univ, Sendai, Miyagi 980, Japan
[41] Univ Tokyo, Dept Phys, Tokyo 113, Japan
[42] Tokyo Metropolitan Univ, Tokyo 158, Japan
[43] Tokyo Univ Agr & Technol, Tokyo, Japan
[44] Virginia Polytech Inst & State Univ, IPNAS, Blacksburg, VA 24061 USA
[45] Yonsei Univ, Seoul 120749, South Korea
来源
PHYSICAL REVIEW D | 2010年 / 81卷 / 09期
基金
中国国家自然科学基金; 新加坡国家研究基金会; 澳大利亚研究理事会; 瑞士国家科学基金会; 日本学术振兴会;
关键词
BELLE; IDENTIFICATION;
D O I
10.1103/PhysRevD.81.091102
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We search for the flavor-changing neutral current decays D-0 -> mu(+)mu(-) and D-0 -> e(+)e(-), and for the lepton-flavor violating decays D-0 -> e(+/-)mu(-/+) using 660 fb(-1) of data collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We find no evidence for any of these decays. We obtain significantly improved upper limits on the branching fractions: B(D-0 -> mu(+)mu(-)) < 1.4 x 10(-7), B(D-0 -> e(+)e(-)) < 7.9 x 10(-8), and B(D-0 -> e(+)mu(-)) + B(D-0 -> mu(+)e(-)) < 2.6 x 10(-7) at 90% confidence level.
引用
收藏
页数:6
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