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

页数：5

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