Observation of e+e- → η′J/ψ center-of-mass energies between 4.189 and 4.600 GeV

被引：20

作者：

Ablikim, M. ^{[1
]}

Achasov, M. N. ^{[9
,66
]}

Ahmed, S. ^{[14
]}

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

Albayrak, O. ^{[5
]}

Albrecht, M. ^{[4
]}

Ambrose, D. J. ^{[50
]}

Amoroso, A. ^{[55
,57
]}

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

An, Q. ^{[52
,62
]}

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

Ferroli, R. Baldini ^{[20
]}

Ban, Y. ^{[34
]}

Bennett, D. W. ^{[19
]}

Bennett, J. V. ^{[5
]}

Berger, N. ^{[25
]}

Bertani, M. ^{[20
]}

Bettoni, D. ^{[23
]}

Bian, J. M. ^{[49
]}

Bianchi, F. ^{[55
,57
]}

Boger, E. ^{[26
,64
]}

Boyko, I. ^{[26
]}

Briere, R. A. ^{[5
]}

Cai, H. ^{[59
]}

Cai, X. ^{[1
,62
]}

Cakir, O. ^{[43
]}

Calcaterra, A. ^{[1
,20
]}

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

Cetin, S. A. ^{[44
]}

Chang, J. F. ^{[1
,62
]}

Chelkov, G. ^{[26
,64
,65
]}

Chen, G. ^{[1
]}

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

Chen, H. Y. ^{[2
]}

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

Chen, M. L. ^{[1
,62
]}

Chen, S. ^{[47
]}

Chen, S. J. ^{[32
]}

Chen, X. ^{[1
,62
]}

Chen, X. R. ^{[29
]}

Chen, Y. B. ^{[1
,62
]}

Cheng, H. P. ^{[17
]}

Chu, X. K. ^{[34
]}

Cibinetto, G. ^{[23
]}

Dai, H. L. ^{[1
,62
]}

Dai, J. P. ^{[37
]}

Dbeyssi, A. ^{[14
]}

Dedovich, D. ^{[26
]}

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

Denig, A. ^{[25
]}

机构：

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

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

[3] Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China

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

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

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

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

[8] COMSATS Inst Informat Technol, Def Rd,Raiwind Rd, Lahore 54000, Pakistan

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

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

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

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

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

[14] Helmholtz Inst Mainz, Johann Joachim Becher Weg 45, D-55099 Mainz, Germany

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

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

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

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

[19] Indiana Univ, Bloomington, IN 47405 USA

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

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

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

[23] Ist Nazl Fis Nucl, Sez Ferrara, I-44122 Ferrara, Italy

[24] Univ Ferrara, I-44122 Ferrara, Italy

[25] Johannes Gutenberg Univ Mainz, Johann Joachim Becher Weg 45, D-55099 Mainz, Germany

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

[27] Univ Giessen, Phys Inst 2, Heinrich Buff Ring 16, D-35392 Giessen, Germany

[28] Univ Groningen, KVI CART, NL-9747 AA Groningen, Netherlands

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

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

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

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

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

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

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

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

[37] Shanghai Jiao Tong Univ, Shanghai 200240, Peoples R China

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

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

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

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

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

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

[44] Istanbul Bilgi Univ, TR-34060 Istanbul, Turkey

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

[46] Near East Univ, CY-99138 Nicosia, Cyprus

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

[48] Univ Hawaii, Honolulu, HI 96822 USA

[49] Univ Minnesota, Minneapolis, MN 55455 USA

[50] Univ Rochester, Rochester, NY 14627 USA

来源：

PHYSICAL REVIEW D | 2016年 / 94卷 / 03期

基金：

美国国家科学基金会; 瑞典研究理事会; 中国国家自然科学基金; 俄罗斯基础研究基金会; 新加坡国家研究基金会;

关键词：

D O I：

10.1103/PhysRevD.94.032009

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The process e(+)e(-) -> eta' J/psi is observed for the first time with a statistical significance of 8.6 sigma at center-of-mass energy root s = 4.226 GeV and 7.3 sigma at root s = 4.258 GeV using data samples collected with the BESIII detector. The Born cross sections are measured to be (3.7 +/- 0.7 +/- 0.3) and (3.9 +/- 0.8 +/- 0.3) pb at root s = 4.226 and 4.258 GeV, respectively, where the first errors are statistical and the second systematic. Upper limits at the 90% confidence level of the Born cross sections are also reported at other 12 energy points.

引用

页数：10

共 50 条

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