Measurement of the branching fraction for the decay Γ(4S) → Γ(1S)π+ π-

被引:10
|
作者
Sokolov, A. [14 ]
Shapkin, M. [14 ]
Aihara, H. [44 ]
Arinstein, K. [1 ,32 ]
Aushev, T. [20 ]
Bakich, A. M. [39 ]
Barberio, E. [22 ]
Bay, A. [20 ]
Belous, K. [14 ]
Bhardwaj, V. [34 ]
Bondar, A. [1 ,32 ]
Bracko, M. [16 ,21 ]
Browder, T. E. [9 ]
Chang, M. -C. [5 ]
Chang, P. [27 ]
Chen, A. [25 ]
Chen, K. -F. [27 ]
Cheon, B. G. [8 ]
Chiang, C. -C. [27 ]
Chistov, R. [15 ]
Cho, I. -S. [49 ]
Choi, Y. [38 ]
Dash, M. [48 ]
Drutskoy, A. [3 ]
Dungel, W. [13 ]
Eidelman, S. [1 ,32 ]
Epifanov, D. [1 ,32 ]
Gabyshev, N. [1 ,32 ]
Goldenzweig, P. [3 ]
Ha, H. [18 ]
Haba, J.
Han, B. -Y. [18 ]
Hayashii, H. [24 ]
Hazumi, M. [10 ]
Horii, Y. [43 ]
Hoshi, Y. [42 ]
Hou, W. -S. [27 ]
Hsiung, Y. B. [27 ]
Hyun, H. J. [19 ]
Iijima, T. [23 ]
Inami, K. [23 ]
Ishikawa, A. [35 ]
Ishino, H. [45 ]
Iwasaki, Y. [10 ]
Joshi, N. J. [40 ]
Kah, D. H. [19 ]
Kaji, H. [23 ]
Kang, J. H. [49 ]
Kawai, H. [2 ]
Kawasaki, T. [30 ]
机构
[1] Budker Inst Nucl Phys, Novosibirsk 630090, Russia
[2] Chiba Univ, Chiba, Japan
[3] Univ Cincinnati, Cincinnati, OH 45221 USA
[4] T Kosciuszko Cracow Univ Technol, Krakow, Poland
[5] Fu Jen Catholic Univ, Dept Phys, Taipei, Taiwan
[6] Univ Giessen, Giessen, Germany
[7] Grad Univ Adv Studies, Hayama, Kanagawa, Japan
[8] Hanyang Univ, Seoul 133791, South Korea
[9] Univ Hawaii, Honolulu, HI 96822 USA
[10] Natl Lab High Energy Phys, KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 305, Japan
[11] Hiroshima Inst Technol, Hiroshima, Japan
[12] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China
[13] Inst High Energy Phys, Vienna, Austria
[14] Inst High Energy Phys, Protvino, Russia
[15] Inst Theoret & Expt Phys, Moscow 117259, Russia
[16] Jozef Stefan Inst, Ljubljana, Slovenia
[17] Kanagawa Univ, Yokohama, Kanagawa, Japan
[18] Korea Univ, Seoul, South Korea
[19] Kyungpook Natl Univ, Taegu 702701, South Korea
[20] Ecole Polytech Fed Lausanne, Lausanne, Switzerland
[21] Univ Maribor, SLO-2000 Maribor, Slovenia
[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 United Univ, Miaoli, Taiwan
[27] Natl Taiwan Univ, Dept Phys, Taipei, Taiwan
[28] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
[29] Nippon Dent Univ, Niigata, Japan
[30] Niigata Univ, Niigata, Japan
[31] Univ Nova Gorica, Nova Gorica, Italy
[32] Novosibirsk State Univ, Novosibirsk 630090, Russia
[33] Osaka City Univ, Osaka 558, Japan
[34] Panjab Univ, Chandigarh 160014, India
[35] Saga Univ, Saga 840, Japan
[36] Univ Sci & Technol China, Hefei 230026, Peoples R China
[37] Seoul Natl Univ, Seoul, South Korea
[38] Sungkyunkwan Univ, Suwon, South Korea
[39] Univ Sydney, Sydney, NSW 2006, Australia
[40] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
[41] Toho Univ, Funabashi, Chiba 274, Japan
[42] Tohoku Gakuin Univ, Tagajo, Miyagi, Japan
[43] Tohoku Univ, Sendai, Miyagi 980, Japan
[44] Univ Tokyo, Dept Phys, Tokyo 113, Japan
[45] Tokyo Inst Technol, Tokyo 152, Japan
[46] Tokyo Metropolitan Univ, Tokyo 158, Japan
[47] Tokyo Univ Agr & Technol, Tokyo, Japan
[48] Virginia Polytech Inst & State Univ, IPNAS, Blacksburg, VA 24061 USA
[49] Yonsei Univ, Seoul 120749, South Korea
[50] Univ Ljubljana, Fac Math & Phys, Ljubljana, Slovenia
来源
PHYSICAL REVIEW D | 2009年 / 79卷 / 05期
基金
日本学术振兴会; 中国国家自然科学基金; 瑞士国家科学基金会; 澳大利亚研究理事会;
关键词
IDENTIFICATION;
D O I
10.1103/PhysRevD.79.051103
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We study transitions between Gamma states with the emission of charged pions using 604.6 fb(-1) of data collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The measured product branching fraction is B(Gamma(4S) -> Gamma(1S)pi(+)pi(-)) x B(Gamma(1S) -> mu(+)mu(-)) = (2.11 +/- 0.30(stat) +/- 0.14(sys)) x 10(-6) and the partial decay width is Gamma(Gamma(4S) -> Gamma(1S)pi(+)pi(-)) = 1.75 +/- 0.25(stat) +/- 0.24(sys)) keV.
引用
收藏
页数:5
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