Observation of e+e- → ηhc at center-of-mass energies from 4.085 to 4.600 GeV

被引：24
|
作者：
Ablikim, M. [1 ]
Achasov, M. N. [9 ,10 ,63 ]
Ahmed, S. [14 ]
Ai, X. C. [1 ]
Albayrak, O. [5 ]
Albrecht, M. [4 ]
Ambrose, D. J. [52 ]
Amoroso, A. [57 ]
An, F. F. [1 ]
An, Q. [41 ,42 ,54 ]
Bai, J. Z. [1 ]
Bakina, O. [26 ]
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. [51 ]
Bianchi, F. [57 ]
Boger, E. [26 ,61 ]
Boyko, I. [26 ]
Briere, R. A. [5 ]
Cai, H.
Cai, X. [1 ,41 ,42 ]
Cakir, O. [45 ]
Calcaterra, A. [20 ]
Cao, G. F. [1 ,49 ]
Cetin, S. A. [46 ]
Chai, J.
Chang, J. F. [1 ,41 ,42 ]
Chelkov, G. [26 ,61 ,62 ]
Chen, G. [1 ]
Chen, H. S. [1 ,49 ]
Chen, J. C. [1 ]
Chen, M. L. [1 ,41 ,42 ]
Chen, S. [49 ]
Chen, S. J. [32 ]
Chen, X. [1 ,41 ,42 ]
Chen, X. R. [29 ]
Chen, Y. B. [1 ,41 ,42 ]
Chu, X. K. [34 ]
Cibinetto, G. [23 ]
Dai, H. L. [1 ,41 ,42 ]
Dai, J. P. [37 ,67 ,68 ,69 ]
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] Bochum Ruhr Univ, 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, 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, Peoples R China
[17] Huangshan Coll, Huangshan 245000, Peoples R China
[18] Hunan Univ, Changsha 410082, 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, Moscow 141980, Russia
[27] Justus Liebig 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] State Key Lab Particle Detect & Elect, Beijing 100049, Peoples R China
[42] State Key Lab Particle Detect & Elect, Hefei 230026, Peoples R China
[43] Sun Yat Sen Univ, Guangzhou 510275, Guangdong, Peoples R China
[44] Tsinghua Univ, Beijing 100084, Peoples R China
[45] Ankara Univ, TR-06100 Ankara, Turkey
[46] Istanbul Bilgi Univ, TR-34060 Istanbul, Turkey
[47] Uludag Univ, TR-16059 Bursa, Turkey
[48] Near East Univ, CY-10 Nicosia, Cyprus
[49] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[50] Univ Hawaii, Honolulu, HI 96822 USA
来源：
PHYSICAL REVIEW D | 2017年 / 96卷 / 01期
基金：
新加坡国家研究基金会; 中国国家自然科学基金; 美国国家科学基金会;
关键词：
DECAY; Y(4260);
D O I：
10.1103/PhysRevD.96.012001
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We observe for the first time the process e(+) e(-) -> eta h(c) with data collected by the BESIII experiment. Significant signals are observed at the center-of-mass energy root s = 4.226 GeV, and the Born cross section is measured to be (9.5(-2.0)(+2.2)) pb. Evidence for eta h(c) is observed at root s = 4.358 GeV with a Born cross section of (10.0(-2.7)(+3.1)) pb, and upper limits on the production cross section at other center-of-mass energies between 4.085 and 4.600 GeV are determined.
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页数：13
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