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
基金
新加坡国家研究基金会; 俄罗斯基础研究基金会; 中国国家自然科学基金; 美国国家科学基金会; 瑞典研究理事会;
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
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页数:10
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