Search for charmonium and charmoniumlike states in Y(1S) radiative decays

被引：13

作者：

Shen, C. P. ^{[1
,9
]}

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

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

Wang, P. ^{[1
]}

Adachi, I. ^{[10
]}

Aihara, H. ^{[44
]}

Aushev, T. ^{[14
,20
]}

Bakich, A. M. ^{[39
]}

Balagura, V. ^{[14
]}

Belous, K. ^{[12
]}

Bhardwaj, V. ^{[35
]}

Bischofberger, M. ^{[26
]}

Bracko, M. ^{[15
,22
]}

Browder, T. E. ^{[9
]}

Chang, M. -C. ^{[4
]}

Chen, K. -F. ^{[28
]}

Chen, P. ^{[28
]}

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

Choi, Y. ^{[38
]}

Dalseno, J. ^{[23
,41
]}

Danilov, M. ^{[14
]}

Dolezal, Z. ^{[2
]}

Eidelman, S. ^{[5
,33
]}

Gabyshev, N. ^{[5
,33
]}

Ha, H. ^{[18
]}

Haba, J. ^{[10
]}

Hayasaka, K. ^{[25
]}

Hayashii, H. ^{[26
]}

Horii, Y. ^{[43
]}

Hoshi, Y. ^{[42
]}

Hou, W. -S. ^{[28
]}

Hyun, H. J. ^{[19
]}

Inami, K. ^{[25
]}

Itoh, R. ^{[10
]}

Iwabuchi, M. ^{[47
]}

Iwasaki, Y. ^{[10
]}

Julius, T. ^{[24
]}

Kang, J. H. ^{[47
]}

Kawai, H. ^{[3
]}

Kawasaki, T. ^{[31
]}

Kichimi, H. ^{[10
]}

Kiesling, C. ^{[23
]}

Kim, H. J. ^{[19
]}

Kim, M. J. ^{[19
]}

Kim, Y. J. ^{[7
]}

Ko, B. R. ^{[18
]}

Krizan, P. ^{[15
,21
]}

Kuhr, T. ^{[17
]}

Kuzmin, A. ^{[5
,33
]}

Lange, J. S. ^{[6
]}

机构：

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

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

[3] Chiba Univ, Chiba, Japan

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

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

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

[11] Inst High Energy Phys, Vienna, Austria

[12] Inst High Energy Phys, Protvino, Russia

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

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

[15] J Stefan Inst, Ljubljana, Slovenia

[16] Kanagawa Univ, Yokohama, Kanagawa, Japan

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

[18] Korea Univ, Seoul, South Korea

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

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

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

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

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

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

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

[26] Nara Womens Univ, Nara 630, Japan

[27] Natl United Univ, Miaoli, Taiwan

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

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

[30] Nippon Dent Univ, Niigata, Japan

[31] Niigata Univ, Niigata, Japan

[32] Univ Nova Gorica, Nova Gorica, Slovenia

[33] Novosibirsk State Univ, Novosibirsk 630090, Russia

[34] Osaka City Univ, Osaka 558, Japan

[35] Panjab Univ, Chandigarh 160014, India

[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, Sch Phys, Sydney, NSW 2006, Australia

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

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

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

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

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

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

[46] Wayne State Univ, Detroit, MI 48202 USA

[47] Yonsei Univ, Seoul 120749, South Korea

来源：

PHYSICAL REVIEW D | 2010年 / 82卷 / 05期

关键词：

D O I：

10.1103/PhysRevD.82.051504

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using a sample of 102 X 10(6) Y(1S) events collected with the Belle detector, we report on the first search for charge-parity-even charmonium and charmoniumlike states in Y(1S) radiative decays. No significant chi(cJ) or eta(c) signal is observed and 90% C. L. limits on B(Y(1S) -> gamma chi(c0)) < 6.5 X 10(-4), B(Y(1S) -> gamma chi(c1)) < 2.3 X 10(-5), B(Y(1S) -> gamma chi(c2)) < 7.6 X 10(-6), and B(Y(1S) -> gamma eta(c)) < 5.7 X 10(-5) are obtained. The product branching fraction limits B(Y(1S) -> gamma X(3872))B(X(3872) -> pi(+) pi(-) J/psi) < 1.6 X 10(-6), B(Y(1S) -> gamma X(3872))B(X(3872) -> pi+ pi(-) pi(0) J/psi) < 2.8 X 10(-6), B(Y(1S) -> gamma X(3915)) B(X(3915) -> omega J/psi) < 3.0 X 10(-6), and B(Y(1S) -> gamma Y(4140))B(Y(4140) -> phi J/psi) < 2.2 X 10(-6) are obtained at the 90% C.L. Furthermore, no evidence is found for excited charmonium states below 4.8 GeV/c(2).

引用

页数：6

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