Measurement of γγ→p(p)over-bar production at Belle

被引：33

作者：

Kuo, CC ^{[1
]}

Abe, K

Adachi, I

Aihara, H

Asano, Y

Aulchenko, V

Aushev, T

Bahinipati, S

Bakich, AM

Bay, A

Bedny, I

Bitenc, U

Bizjak, I

Blyth, S

Bondar, A

Bozek, A

Bracko, M

Chang, MC

Chang, P

Chen, A

Chen, WT

Cheon, BG

Chistov, R

Choi, Y

Chuvikov, A

Cole, S

Dalseno, J

Danilov, M

Dash, M

Drutskoy, A

Eidelman, S

Enari, Y

Fratina, S

Gabyshev, N

Gershon, T

Go, A

Gokhroo, G

Gorisek, A

Haba, J

Hayasaka, K

Hayashii, H

Hazumi, M

Hokuue, T

Hoshi, Y

Hou, S

Hou, WS

Iijima, T

Imoto, A

Inami, K

Ishikawa, A

机构：

[1] Natl Cent Univ, Chungli 32054, Taiwan

[2] Chiba Univ, Chiba, Japan

[3] Chonnam Natl Univ, Kwangju, South Korea

[4] Univ Cincinnati, Cincinnati, OH USA

[5] Univ Hawaii, Honolulu, HI 96822 USA

[6] Hugh Energy Accelerator Res Org KEK, Tsukuba, Ibaraki, Japan

[7] Hiroshima Inst Technol, Hiroshima, Japan

[8] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China

[9] Inst High Energy Phys, Vienna, Austria

[10] Inst Theoret & Expt Phys, Moscow 117259, Russia

[11] Jozef Stefan Inst, Ljubljana, Slovenia

[12] Kanagawa Univ, Yokohama, Kanagawa, Japan

[13] Korea Univ, Seoul 136701, South Korea

[14] Kyungpook Natl Univ, Taegu 702701, South Korea

[15] Ecole Polytech Fed Lausanne, Swiss Fed Inst Technol Lausanne, CH-1015 Lausanne, Switzerland

[16] Univ Ljubljana, Ljubljana, Slovenia

[17] Univ Maribor, SLO-2000 Maribor, Slovenia

[18] Univ Melbourne, Melbourne, Vic, Australia

[19] Nagoya Univ, Nagoya, Aichi, Japan

[20] Nara Womens Univ, Nara 630, Japan

[21] Natl United Univ, Miaoli, Taiwan

[22] Natl Taiwan Univ, Dept Phys, Taipei, Taiwan

[23] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland

[24] Nihon Dent Coll, Niigata, Japan

[25] Niigata Univ, Niigata, Japan

[26] Osaka City Univ, Osaka 558, Japan

[27] Osaka Univ, Osaka, Japan

[28] Panjab Univ, Chandigarh 160014, India

[29] Peking Univ, Beijing 100871, Peoples R China

[30] Princeton Univ, Princeton, NJ 08544 USA

[31] Saga Univ, Saga 840, Japan

[32] Univ Sci & Technol China, Hefei 230026, Peoples R China

[33] Seoul Natl Univ, Seoul, South Korea

[34] Sungkyunkwan Univ, Suwon, South Korea

[35] Univ Sydney, Sydney, NSW 2006, Australia

[36] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

[37] Toho Univ, Funabashi, Chiba 274, Japan

[38] Tohoku Gakuin Univ, Togajo, Japan

[39] Tohoku Univ, Sendai, Miyagi 980, Japan

[40] Univ Tokyo, Dept Phys, Tokyo 113, Japan

[41] Tokyo Inst Technol, Tokyo 152, Japan

[42] Tokyo Metropolitan Univ, Tokyo 158, Japan

[43] Tokyo Univ Agr & Technol, Tokyo, Japan

[44] Univ Tsukuba, Tsukuba, Ibaraki 305, Japan

[45] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA

[46] Yonsei Univ, Seoul 120749, South Korea

[47] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

来源：

PHYSICS LETTERS B | 2005年 / 621卷 / 1-2期

关键词：

D O I：

10.1016/j.physletb.2005.06.036

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A high precision study of the process yy -> pp has been performed using a data sample of 89 fb(-1) collected with the Belle detector at the KEKB e(+)e(-) collider. The cross section of p (p) over bar production has been measured at two-photon center-of-mass (c.m.) energies between 2.025 and 4.0 GeV and in the c.m. angular range of vertical bar cos theta*vertical bar < 0.6. Production of yy -> eta(c) -> p (p) over bar is observed and the product of the two-photon width of the 77, and its branching ratio to pp is determined. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：41 / 55

页数：15

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