High statistics study of the f0(980) resonance in γγ→π+π- production

被引：79

作者：

Mori, T. ^{[1
]}

Uehara, S.

Watanabe, Y.

Abe, K.

Adachi, I.

Aihara, H.

Anipko, D.

Arinstein, K.

Aulchenko, V.

Bakich, A. M.

Barberio, E.

Bay, A.

Bedny, I.

Belous, K.

Bitenc, U.

Bizjak, I.

Bondar, A.

Bozek, A.

Bracko, M.

Brodzicka, J.

Browder, T. E.

Chang, M. -C.

Chang, P.

Chen, A.

Chen, W. T.

Cheon, B. G.

Chistov, R.

Choi, Y.

Choi, Y. K.

Dalseno, J.

Dash, M.

Eidelman, S.

Epifanov, D.

Fratina, S.

Gabyshev, N.

Gershon, T.

Golob, B.

Ha, H.

Hayasaka, K.

Hayashii, H.

Hazumi, M.

Heffernan, D.

Hokuue, T.

Hoshi, Y.

Hou, S.

Hou, W. -S.

Iijima, T.

Ikado, K.

Imoto, A.

机构：

[1] Nagoya Univ, Nagoya, Aichi, 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] Grad Univ Adv Studies, Hayama, Japan

[8] Univ Hawaii, Honolulu, HI 96822 USA

[9] KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan

[10] Hiroshima Inst Technol, Hiroshima, Japan

[11] Univ Illinois, Urbana, IL 61801 USA

[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 136701, South Korea

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

[20] Swiss Fed Inst Technol, EPFL, CH-1015 Lausanne, Switzerland

[21] Univ Ljubljana, Ljubljana 61000, Slovenia

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

[23] Univ Melbourne, Parkville, Vic 3052, Australia

[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 95021, Japan

[31] Univ Nova Gorica, Nova Gorica, Slovenia

[32] Osaka City Univ, Osaka 558, Japan

[33] Osaka Univ, Suita, Osaka 565, Japan

[34] Panjab Univ, Chandigarh 160014, India

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

[36] Brookhaven Natl Lab, RIKEN, Res Ctr, Upton, NY 11973 USA

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

[38] Seoul Natl Univ, Seoul 151, South Korea

[39] Shinshu Univ, Nagano, Japan

[40] Sungkyunkwan Univ, Suwon, South Korea

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

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

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

[44] Tohoku Gakuin Univ, Tagajo, Miyagi, Japan

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

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

[47] Tokyo Inst Technol, Tokyo 152, Japan

[48] Tokyo Metropolitan Univ, Tokyo 158, Japan

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

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

来源：

PHYSICAL REVIEW D | 2007年 / 75卷 / 05期

关键词：

D O I：

10.1103/PhysRevD.75.051101

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on a high statistics measurement of the cross section of the process gamma gamma ->pi(+)pi(-) in the pi(+)pi(-) invariant mass range 0.8 GeV/c(2)< W < 1.5 GeV/c(2) with 85.9 fb(-1) of data collected at s=10.58 GeV and 10.52 GeV with the Belle detector. A clear signal for the f(0)(980) resonance is observed. From a fit to the mass spectrum, the mass, pi(+)pi(-) and two-photon decay widths of the resonance are found to be 985.6(-1.5)(+1.2)(stat)(-1.6)(+1.1)(syst) MeV/c(2), 34.2(-11.8)(+13.9)(stat)(-2.5)(+8.8)(syst) MeV, and 205(-83)(+95)(stat)(-117)(+147)(syst) eV, respectively.

引用

页数：6

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