Search for the radiative transitions Ψ(3770) → γηc and γηc (2S)

被引：1

作者：

Ablikim, M. ^{[1
]}

Achasov, M. N. ^{[8
,56
]}

Ai, X. C. ^{[1
]}

Albayrak, O. ^{[4
]}

Albrecht, M. ^{[3
]}

Ambrose, D. J. ^{[45
]}

An, F. F. ^{[1
]}

An, Q. ^{[46
]}

Bai, J. Z. ^{[1
]}

Ferroli, R. Baldini ^{[19
]}

Ban, Y. ^{[30
]}

Bennett, J. V. ^{[18
]}

Bertani, M. ^{[19
]}

Bian, J. M. ^{[44
]}

Boger, E. ^{[23
,57
]}

Bondarenko, O. ^{[24
]}

Boyko, I. ^{[23
]}

Braun, S. ^{[41
]}

Briere, R. A. ^{[4
]}

Cai, H. ^{[53
]}

Cai, X. ^{[1
]}

Cakir, O. ^{[38
]}

Calcaterra, A. ^{[19
]}

Cao, G. F. ^{[1
]}

Cetin, S. A. ^{[39
]}

Chang, J. F. ^{[1
]}

Chelkov, G. ^{[23
,57
,58
]}

Chen, G. ^{[1
]}

Chen, H. S. ^{[1
]}

Chen, J. C. ^{[1
]}

Chen, M. L. ^{[1
]}

Chen, S. J. ^{[28
]}

Chen, X. ^{[1
]}

Chen, X. R. ^{[25
]}

Chen, Y. B. ^{[1
]}

Cheng, H. P. ^{[16
]}

Chu, X. K. ^{[30
]}

Chu, Y. P. ^{[1
]}

Cronin-Hennessy, D. ^{[44
]}

Dai, H. L. ^{[1
]}

Dai, J. P. ^{[1
]}

Dedovich, D. ^{[23
]}

Deng, Z. Y. ^{[1
]}

Denig, A. ^{[22
]}

Denysenko, I. ^{[23
]}

Destefanis, M. ^{[49
,51
]}

Ding, W. M. ^{[32
]}

Ding, Y. ^{[26
]}

Dong, C. ^{[29
]}

Dong, J. ^{[1
]}

机构：

[1] Inst High Energy Phys, Beijing 100049, Peoples R China

[2] Beihang Univ, Beijing 100191, Peoples R China

[3] Ruhr Univ Bochum, D-44780 Bochum, Germany

[4] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[5] Cent China Normal Univ, Wuhan 430079, Peoples R China

[6] China Ctr Adv Sci & Technol, Beijing 100190, Peoples R China

[7] COMSATS Inst Informat Technol, Lahore 54000, Pakistan

[8] GI Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia

[9] GSI Helmholtzctr Heavy Ion Res GmbH, D-64291 Darmstadt, Germany

[10] Guangxi Normal Univ, Guilin 541004, Peoples R China

[11] Guangxi Univ, Nanning 530004, Peoples R China

[12] Hangzhou Normal Univ, Hangzhou 310036, Zhejiang, Peoples R China

[13] Helmholtz Inst Mainz, D-55099 Mainz, Germany

[14] Henan Normal Univ, Xinxiang 453007, Peoples R China

[15] Henan Univ Sci & Technol, Luoyang 471003, Peoples R China

[16] Huangshan Coll, Huangshan 245000, Peoples R China

[17] Hunan Univ, Changsha 410082, Hunan, Peoples R China

[18] Indiana Univ, Bloomington, IN 47405 USA

[19] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[20] Ist Nazl Fis Nucl, I-06100 Perugia, Italy

[21] Univ Perugia, I-06100 Perugia, Italy

[22] Johannes Gutenberg Univ Mainz, D-55099 Mainz, Germany

[23] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia

[24] Univ Groningen, KVI, NL-9747 AA Groningen, Netherlands

[25] Lanzhou Univ, Lanzhou 730000, Peoples R China

[26] Liaoning Univ, Shenyang 110036, Peoples R China

[27] Nanjing Normal Univ, Nanjing 210023, Jiangsu, Peoples R China

[28] Nanjing Univ, Nanjing 210093, Jiangsu, Peoples R China

[29] Nankai Univ, Tianjin 300071, Peoples R China

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

[31] Seoul Natl Univ, Seoul 151747, South Korea

[32] Shandong Univ, Jinan 250100, Peoples R China

[33] Shanxi Univ, Taiyuan 030006, Peoples R China

[34] Sichuan Univ, Chengdu 610064, Peoples R China

[35] Soochow Univ, Suzhou 215006, Peoples R China

[36] Sun Yat Sen Univ, Guangzhou 510275, Guangdong, Peoples R China

[37] Tsinghua Univ, Beijing 100084, Peoples R China

[38] Ankara Univ, TR-06100 Ankara, Turkey

[39] Dogus Univ, TR-34722 Istanbul, Turkey

[40] Uludag Univ, TR-16059 Bursa, Turkey

[41] Univ Giessen, D-35392 Giessen, Germany

[42] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[43] Univ Hawaii, Honolulu, HI 96822 USA

[44] Univ Minnesota, Minneapolis, MN 55455 USA

[45] Univ Rochester, Rochester, NY 14627 USA

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

[47] Univ South China, Hengyang 421001, Peoples R China

[48] Univ Punjab, Lahore 54590, Pakistan

[49] Univ Turin, I-10125 Turin, Italy

[50] Univ Piemonte Orientale, I-15121 Alessandria, Italy

来源：

PHYSICAL REVIEW D | 2014年 / 89卷 / 11期

基金：

中国国家自然科学基金; 新加坡国家研究基金会; 美国国家科学基金会;

关键词：

BRANCHING FRACTION; E&E-ANNIHILATION; CROSS-SECTIONS; MONTE-CARLO; DECAY;

D O I：

10.1103/PhysRevD.89.112005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

By using a 2.92 fb-1 data sample taken at pffisffiffi 3.773 GeV with the BESIII detector operating at the BEPCII collider, we search for the radiative transitions.d3770c and cd2S through the hadronic decays cdcd2S. K0 SK p. No significant excess of signal events above background is observed. We set upper limits at a 90% confidence level for the product branching fractions to be Bdd3770cxBd.c. K0 SK k p < 1.6x10-5 and Bd.d3770cd2SxBd.cd2S. K0 SK p<5.6x10-6. Combining our result with world-average values of Bd.cd.cd2S. K0 SK p, we find the branching fractions Bd.d3770c< 6.8 x 10-4 and Bd.d3770cd2S< 2.0 x 10-3 at a 90% confidence level.

引用

页数：10

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