Search for charmonium and charmoniumlike states in γ(2S) radiative decays

被引：12

作者：

Wang, X. L. ^{[1
]}

Shen, C. P. ^{[31
]}

Yuan, C. Z. ^{[1
]}

Wang, P. ^{[1
]}

Adachi, I. ^{[11
]}

Aihara, H. ^{[52
]}

Asner, D. M. ^{[41
]}

Aushev, T. ^{[18
]}

Bakich, A. M. ^{[46
]}

Barberio, E. ^{[30
]}

Belous, K. ^{[16
]}

Bhuyan, B. ^{[13
]}

Bozek, A. ^{[36
]}

Bracko, M. ^{[19
,28
]}

Browder, T. E. ^{[10
]}

Chang, M. -C. ^{[6
]}

Chen, A. ^{[33
]}

Cheon, B. G. ^{[8
]}

Chilikin, K. ^{[18
]}

Cho, I. -S.

Cho, K. ^{[22
]}

Choi, Y. ^{[45
]}

Dalseno, J. ^{[28
,48
]}

Danilov, M. ^{[18
]}

Dolezal, Z. ^{[4
]}

Eidelman, S. ^{[2
,3
]}

Fast, J. E. ^{[41
]}

Feindt, M. ^{[21
]}

Gaur, V. ^{[47
]}

Goh, Y. M. ^{[8
]}

Haba, J. ^{[11
]}

Hayasaka, K. ^{[31
]}

Hayashii, H. ^{[32
]}

Hoshi, Y. ^{[50
]}

Hsiung, Y. B. ^{[35
]}

Hyun, H. J. ^{[24
]}

Iijima, T. ^{[31
]}

Ishikawa, A. ^{[51
]}

Itoh, R. ^{[11
]}

Iwabuchi, M.

Iwasaki, Y. ^{[11
]}

Iwashita, T. ^{[32
]}

Julius, T. ^{[30
]}

Kang, J. H.

Katayama, N. ^{[11
]}

Kawasaki, T. ^{[38
]}

Kichimi, H. ^{[11
]}

Kim, H. J. ^{[24
]}

Kim, H. O. ^{[24
]}

Kim, J. B. ^{[23
]}

机构：

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

[2] Novosibirsk State Univ, Novosibirsk 630090, Russia

[3] Budker Inst Nucl Phys SB RAS, Novosibirsk 630090, Russia

[4] Charles Univ Prague, Fac Math & Phys, Prague, Czech Republic

[5] Univ Cincinnati, Cincinnati, OH 45221 USA

[6] Fu Jen Catholic Univ, Dept Phys, Taipei, Taiwan

[7] Univ Giessen, Giessen, Germany

[8] Hanyang Univ, Seoul 133791, South Korea

[9] Gifu Univ, Gifu, Japan

[10] Univ Hawaii, Honolulu, HI 96822 USA

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

[12] Hiroshima Inst Technol, Hiroshima, Japan

[13] Indian Inst Technol Guwahati, Gauhati, Assam, India

[14] Indian Inst Technol Madras, Madras, Tamil Nadu, India

[15] Inst High Energy Phys, Vienna, Austria

[16] Inst High Energy Phys, Protvino, Russia

[17] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy

[18] Inst Theoret & Expt Phys, Moscow, Russia

[19] Jozef Stefan Inst, Ljubljana, Slovenia

[20] Kanagawa Univ, Yokohama, Kanagawa, Japan

[21] Karlsruher Inst Technol, Inst Expt Kernphys, Karlsruhe, Germany

[22] Korea Inst Sci & Technol Informat, Taejon, South Korea

[23] Korea Univ, Seoul, South Korea

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

[25] Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland

[26] Univ Ljubljana, Fac Math & Phys, Ljubljana, Slovenia

[27] Luther Coll, Decorah, IA 52101 USA

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

[29] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[30] Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia

[31] Nagoya Univ, Nagoya, Aichi 4648601, Japan

[32] Nara Womens Univ, Nara 630, Japan

[33] Natl Cent Univ, Chungli, Taiwan

[34] Natl United Univ, Miaoli, Taiwan

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

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

[37] Nippon Dent Univ, Niigata, Japan

[38] Niigata Univ, Niigata, Japan

[39] Univ Nova Gorica, Nova Gorica, Slovenia

[40] Osaka City Univ, Osaka 558, Japan

[41] Pacific NW Natl Lab, Richland, WA 99352 USA

[42] Nucl Phys Res Ctr, Osaka, Japan

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

[44] Seoul Natl Univ, Seoul, South Korea

[45] Sungkyunkwan Univ, Suwon, South Korea

[46] Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia

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

[48] Tech Univ Munich, D-8046 Garching, Germany

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

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

来源：

PHYSICAL REVIEW D | 2011年 / 84卷 / 07期

关键词：

IDENTIFICATION;

D O I：

10.1103/PhysRevD.84.071107

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using a sample of 158 x 10(6) gamma (2S) events collected with the Belle detector, charmonium and charmoniumlike states with even charge parity are searched for in gamma (2S) radiative decays. No significant chi(cJ) or eta(c) signal is observed, and the following upper limits at 90% confidence level (C. L.) are obtained: B(gamma(2S)-> gamma chi(c0)) < 1.0 x 10(-4), B(gamma(2S) -> gamma chi(c1)) < 3.6 x 10(-6), B(gamma(2S) -> gamma chi(c2)) < 1.5 x 10(-5), and B(gamma(2S) ->gamma eta(c)) < 2.7 x 10(-5). No significant signal of any charmoniumlike state is observed, and we obtain the limits B(gamma(2S) -> gamma X(3872)) x B(X(3872) -> pi(+)pi(-) J/psi) < 0.8 x 10(-6), B(gamma(2S) -> gamma X(3872)) x B(X(3872) -> pi(+)pi(-)pi(0) J/psi) < 2.4 x 10(-6), B(gamma(2S) -> gamma X(3915)) x B(X(3915) -> omega J/psi) < 2.8 x 10(-6), B(gamma(2S) -> gamma Y(4140)) x B(Y(4140) -> phi J/psi) < 1.2 x 10(-6), and B(gamma(2S) -> gamma X(4350) x B(X(4350) -> phi J/psi)) < 1.3 x 10(-6) at 90% C. L.

引用

页数：7

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