Search for invisible decay of the Υ(1S)

被引：30
|
作者：
Tajima, O. [1 ]
Hayashii, H.
Hazumi, M.
Inami, K.
Iwasaki, Y.
Uehara, S.
Abe, K.
Adachi, I.
Aihara, H.
Anipko, D.
Aulchenko, V.
Bakich, A. M.
Barberio, E.
Bedny, I.
Belous, K.
Bitenc, U.
Bizjak, I.
Bondar, A.
Bozek, A.
Bracko, M.
Browder, T. E.
Chang, M. -C.
Chen, A.
Chen, K. -F.
Chen, W. T.
Cheon, B. G.
Chistov, R.
Choi, Y.
Choi, Y. K.
Cole, S.
Dalseno, J.
Danilov, M.
Dash, M.
Drutskoy, A.
Eidelman, S.
Fratina, S.
Gabyshev, N.
Gershon, T.
Go, A.
Gokhroo, G.
Ha, H.
Haba, J.
Hayasaka, K.
Heffernan, D.
Hokuue, T.
Hoshi, Y.
Hou, S.
Hou, W. -S.
Iijima, T.
Ikado, K.
机构：
[1] KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan
[2] Budker Inst Nucl Phys, Novosibirsk 630090, Russia
[3] Chiba Univ, Chiba, Japan
[4] Chonnam Natl Univ, Kwangju, South Korea
[5] Univ Cincinnati, Cincinnati, OH 45221 USA
[6] Fu Jen Catholic Univ, Dept Phys, Taipei, Taiwan
[7] Univ Giessen, D-35390 Giessen, Germany
[8] Grad Univ Adv Studies, Hayama, Japan
[9] Univ Hawaii, Honolulu, HI 96822 USA
[10] Univ Illinois, Urbana, IL 61801 USA
[11] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China
[12] Inst High Energy Phys, Vienna, Austria
[13] Inst High Energy Phys, Protvino, Russia
[14] Inst Theoret & Expt Phys, Moscow 117259, Russia
[15] Jozef Stefan Inst, Ljubljana, Slovenia
[16] Kanagawa Univ, Yokohama, Kanagawa, Japan
[17] Korea Univ, Seoul 136701, South Korea
[18] Kyungpook Natl Univ, Taegu 702701, South Korea
[19] Ecole Polytech Fed Lausanne, Swiss Fed Inst Technol, CH-1015 Lausanne, Switzerland
[20] Univ Ljubljana, Ljubljana 61000, Slovenia
[21] Univ Maribor, SLO-2000 Maribor, Slovenia
[22] Univ Melbourne, Parkville, Vic 3052, Australia
[23] Nagoya Univ, Nagoya, Aichi, Japan
[24] Nara Womens Univ, Nara, Japan
[25] Natl Cent Univ, Chungli, Taiwan
[26] Natl United Univ, Miaoli, Taiwan
[27] Natl Taiwan Univ, Dept Phys, Taipei, Taiwan
[28] Nippon Dent Unit, Niigata, Japan
[29] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
[30] Niigata Univ, Niigata 95021, Japan
[31] Univ Nova Gorica, Nova Gorica, Slovenia
[32] Osaka City Univ, Osaka, Japan
[33] Osaka Univ, Suita, Osaka 565, Japan
[34] Panjab Univ, Chandigarh 160014, India
[35] Peking Univ, Beijing 100871, Peoples R China
[36] Univ Pittsburgh, Pittsburgh, PA 15260 USA
[37] Brookhaven Natl Lab, RIKEN, Res Ctr, Upton, NY 11973 USA
[38] Saga Univ, Saga, Japan
[39] Univ Sci & Technol China, Hefei 230026, Peoples R China
[40] Seoul Natl Univ, Seoul 151, South Korea
[41] Shinshu Univ, Nagano, Japan
[42] Sungkyunkwan Univ, Suwon, South Korea
[43] Univ Sydney, Sydney, NSW 2006, Australia
[44] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
[45] Toho Univ, Funabashi, Chiba 274, Japan
[46] Tohoku Gakuin Univ, Tagajo, Miyagi, Japan
[47] Tohoku Univ, Sendai, Miyagi 980, Japan
[48] Univ Tokyo, Dept Phys, Tokyo 113, Japan
[49] Tokyo Inst Technol, Tokyo 152, Japan
[50] Tokyo Metropolitan Univ, Tokyo 158, Japan
来源：
PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 13期
关键词：
D O I：
10.1103/PhysRevLett.98.132001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report results of a search for the invisible decay of the Upsilon(1S) via the Upsilon(3S)->pi(+)pi(-)Upsilon(1S) transition using a data sample of 2.9 fb(-1) at the Upsilon(3S) resonance. The data were collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. No signal is found, and an upper limit for the branching fraction at the 90% confidence level is determined to be B(Upsilon(1S)-> invisible)< 2.5x10(-3).
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页数：6
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