Measurement of the e+ e- → ωπ0π0 cross section at center-of-mass energies from 2.0 to 3.08 GeV

被引:7
作者
Ablikim, M. [1 ]
Achasov, M. N. [10 ,80 ]
Adlarson, P. [73 ]
Albrecht, M. [4 ]
Aliberti, R. [31 ]
Amoroso, A. [70 ,72 ]
An, M. R. [35 ]
An, Q. [53 ,67 ]
Bai, X. H. [62 ]
Bai, Y. [52 ]
Bakina, O. [32 ]
Ferroli, R. Baldini [23 ]
Balossino, I [26 ]
Ban, Y. [42 ,88 ]
Batozskaya, V [1 ,40 ]
Becker, D. [31 ]
Begzsuren, K. [29 ]
Berger, N. [31 ]
Bertani, M. [23 ]
Bettoni, D. [26 ]
Bianchi, F. [70 ,72 ]
Bloms, J. [64 ]
Bortone, A. [70 ,72 ]
Boyko, I [32 ]
Briere, R. A. [5 ]
Brueggemann, A. [64 ]
Cai, H. [74 ]
Cai, X. [1 ,53 ]
Calcaterra, A. [23 ]
Cao, G. F. [1 ,59 ]
Cao, N. [1 ,59 ]
Cetin, S. A. [57 ]
Chang, J. F. [1 ,53 ]
Chang, W. L. [1 ,59 ]
Chelkov, G. [32 ,79 ]
Chen, C. [39 ]
Chen, Chao [50 ]
Chen, G. [1 ]
Chen, H. S. [1 ,59 ]
Chen, M. L. [1 ,53 ]
Chen, S. J. [38 ]
Chen, S. M. [56 ]
Chen, T. [1 ]
Chen, X. R. [28 ,59 ]
Chen, X. T. [1 ]
Chen, Y. B. [1 ,53 ]
Chen, Z. J. [20 ,89 ]
Cheng, W. S. [72 ]
Chu, X. [39 ]
Cibinetto, G. [26 ]
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 Univ Islamabad, Lahore Campus,Def Rd,Off Raiwind Rd, Lahore 54000, Pakistan
[9] Fudan Univ, Shanghai 200433, Peoples R China
[10] GI Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia
[11] GSI Helmholtzctr Heavy Ion Res GmbH, D-64291 Darmstadt, Germany
[12] Guangxi Normal Univ, Guilin 541004, Peoples R China
[13] Hangzhou Normal Univ, Hangzhou 310036, Peoples R China
[14] Helmholtz Inst Mainz, Staudinger Weg 18, D-55099 Mainz, Germany
[15] Henan Normal Univ, Xinxiang 453007, Henan, Peoples R China
[16] Henan Univ Sci & Technol, Luoyang 471003, Peoples R China
[17] Henan Univ Technol, Zhengzhou 450001, Peoples R China
[18] Huangshan Coll, Huangshan 245000, Peoples R China
[19] Hunan Normal Univ, Changsha 410081, Peoples R China
[20] Hunan Univ, Changsha 410082, Peoples R China
[21] Indian Inst Technol Madras, Chennai 600036, Tamil Nadu, India
[22] Indiana Univ, Bloomington, IN 47405 USA
[23] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy
[24] Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy
[25] Univ Perugia, I-06100 Perugia, Italy
[26] Ist Nazl Fis Nucl, Sez Ferrara, I-44122 Ferrara, Italy
[27] Univ Ferrara, I-44122 Ferrara, Italy
[28] Inst Modern Phys, Lanzhou 730000, Peoples R China
[29] Inst Phys & Technol, Peace Ave 54B, Ulaanbaatar 13330, Mongolia
[30] Jilin Univ, Changchun 130012, Peoples R China
[31] Johannes Gutenberg Univ Mainz, Johann Joachim Becher Weg 45, D-55099 Mainz, Germany
[32] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia
[33] Justus Liebig Univ Giessen, Phys Inst 2, Heinrich Buff Ring 16, D-35392 Giessen, Germany
[34] Lanzhou Univ, Lanzhou 730000, Peoples R China
[35] Liaoning Normal Univ, Dalian 116029, Peoples R China
[36] Liaoning Univ, Shenyang 110036, Peoples R China
[37] Nanjing Normal Univ, Nanjing 210023, Peoples R China
[38] Nanjing Univ, Nanjing 210093, Peoples R China
[39] Nankai Univ, Tianjin 300071, Peoples R China
[40] Natl Ctr Nucl Res, PL-02093 Warsaw, Poland
[41] North China Elect Power Univ, Beijing 102206, Peoples R China
[42] Peking Univ, Beijing 100871, Peoples R China
[43] Qufu Normal Univ, Qufu 273165, Shandong, Peoples R China
[44] Shandong Normal Univ, Jinan 250014, Peoples R China
[45] Shandong Univ, Jinan 250100, Peoples R China
[46] Shanghai Jiao Tong Univ, Shanghai 200240, Peoples R China
[47] Shanxi Normal Univ, Linfen 041004, Shanxi, Peoples R China
[48] Shanxi Univ, Taiyuan 030006, Peoples R China
[49] Sichuan Univ, Chengdu 610064, Peoples R China
[50] Soochow Univ, Suzhou 215006, Peoples R China
基金
中国国家自然科学基金; 瑞典研究理事会;
关键词
D O I
10.1103/PhysRevD.105.032005
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The cross section of the process e(+)e(-) -> omega pi(0)pi(0) is measured at nineteen center-of-mass energies from 2.0 to 3.08 GeV using data collected with the BESIII detector at the BEPCII storage ring. A resonant structure around 2.20 GeV is observed with statistical significance larger than 5 sigma. Using a coherent fit to the cross section line shape, the mass and width are determined to be M = 2222 +/- 7 +/- 2 MeV/c(2) and Gamma = 59 +/- 30 +/- 6 MeV, respectively, where the first uncertainties are statistical and the second ones are systematic.
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页数:10
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