Observation of B+→K+ ηγ

被引：25
|
作者：
Nishida, S [1 ]
Abe, K
Aihara, H
Akatsu, M
Asano, Y
Aulchenko, V
Aushev, T
Bahinipati, S
Bakich, AM
Ban, Y
Banerjee, S
Bedny, I
Bitenc, U
Bizjak, I
Blyth, S
Bondar, A
Bozek, A
Bracko, M
Brodzicka, J
Browder, TE
Chao, Y
Chen, A
Chen, KF
Chen, WT
Cheon, BG
Chistov, R
Choi, SK
Choi, Y
Choi, YK
Chuvikov, A
Cole, S
Dalseno, J
Danilov, M
Dash, M
Dong, LY
Dragic, J
Drutskoy, A
Eidelman, S
Eiges, V
Enari, Y
Epifanov, D
Fang, F
Fratina, S
Gabyshev, N
Hayasaka, K
Hayashii, H
Hazumi, M
Higuchi, T
Hinz, L
Hokuue, T
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] Goethe Univ Frankfurt, D-6000 Frankfurt, Germany
[7] Gyeongsang Natl Univ, Chinju, South Korea
[8] Univ Hawaii, Honolulu, HI 96822 USA
[9] Hiroshima Inst Technol, Hiroshima, Japan
[10] Chinese Acad Sci, Inst High Energy Phys, Beijing 100864, Peoples R China
[11] Inst High Energy Phys, Vienna, Austria
[12] Inst Theoret & Expt Phys, Moscow 117259, Russia
[13] Jozef Stefan Inst, Ljubljana, Slovenia
[14] Kanagawa Univ, Yokohama, Kanagawa, Japan
[15] Korea Univ, Seoul 136701, South Korea
[16] Kyungpook Natl Univ, Taegu 702701, South Korea
[17] Ecole Polytech Fed Lausanne, Swiss Fed Inst Technol, CH-1015 Lausanne, Switzerland
[18] Univ Ljubljana, Ljubljana 61000, Slovenia
[19] Univ Maribor, SLO-2000 Maribor, Slovenia
[20] Univ Melbourne, Parkville, Vic 3052, Australia
[21] Nagoya Univ, Nagoya, Aichi, Japan
[22] Nara Womens Univ, Nara 630, Japan
[23] Natl Cent Univ, Chungli 32054, Taiwan
[24] Natl United Univ, Miaoli, Taiwan
[25] Natl Taiwan Univ, Dept Phys, Taipei 10764, Taiwan
[26] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
[27] Nihon Dent Coll, Niigata, Japan
[28] Niigata Univ, Niigata 95021, Japan
[29] Osaka City Univ, Osaka 558, Japan
[30] Osaka Univ, Suita, Osaka 565, Japan
[31] Panjab Univ, Chandigarh 160014, India
[32] Peking Univ, Beijing 100871, Peoples R China
[33] Princeton Univ, Princeton, NJ 08544 USA
[34] Saga Univ, Saga 840, Japan
[35] Univ Sci & Technol China, Hefei 230026, Peoples R China
[36] Seoul Natl Univ, Seoul 151, South Korea
[37] Sungkyunkwan Univ, Suwon, South Korea
[38] Univ Sydney, Sydney, NSW 2006, Australia
[39] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
[40] Toho Univ, Funabashi, Chiba 274, Japan
[41] Tohoku Gakuin Univ, Tagajo, Miyagi, Japan
[42] Tohoku Univ, Sendai, Miyagi 980, Japan
[43] Univ Tokyo, Dept Phys, Tokyo 113, Japan
[44] Tokyo Inst Technol, Tokyo 152, Japan
[45] Tokyo Metropolitan Univ, Tokyo 158, Japan
[46] Tokyo Univ Agr & Technol, Tokyo, Japan
[47] Univ Tsukuba, Tsukuba, Ibaraki 305, Japan
[48] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA
[49] Yonsei Univ, Seoul 120749, South Korea
来源：
PHYSICS LETTERS B | 2005年 / 610卷 / 1-2期
基金：
澳大利亚研究理事会; 日本学术振兴会; 中国国家自然科学基金;
关键词：
radiative B decay;
D O I：
10.1016/j.physletb.2005.01.097
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report measurements of radiative B decays with K eta gamma final states, using a data sample of 253 fb(-1) recorded at the gamma(4S) resonance with the Belle detector at the KEKB e(+)e(-) storage ring. We observe B+ -> K(+)eta gamma for the first time with a branching fraction of (8.44 +/- 1.5(stat)(-0.9)(+1.2)(syst)) x 10(-6) for M (K) (eta) < 2.4 GeV/c(2), and find evidence of B-0 -> K(0)eta gamma. We also search for B -> K-3*(1780)gamma. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：23 / 30
页数：8
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