Observation of an Isoscalar Resonance with Exotic JPC=1-+ Quantum Numbers in J/ψ → γηη′

被引：54

作者：

Ablikim, M. ^{[1
]}

Achasov, M. N. ^{[10
,83
]}

Adlarson, P. ^{[75
]}

Ahmed, S. ^{[14
]}

Albrecht, M. ^{[4
]}

Aliberti, R. ^{[31
]}

Amoroso, A. ^{[72
,73
]}

An, M. R. ^{[35
]}

An, Q. ^{[53
,54
,69
]}

Bai, X. H. ^{[63
]}

Bai, Y. ^{[52
]}

Bakina, O. ^{[32
]}

Ferroli, R. Baldini ^{[23
]}

Balossino, I. ^{[26
]}

Ban, Y. ^{[42
,91
]}

Batozskaya, V. ^{[1
,40
]}

Becker, D. ^{[31
]}

Begzsuren, K. ^{[29
]}

Berger, N. ^{[31
]}

Bertani, M. ^{[23
]}

Bettoni, D. ^{[26
]}

Bianchi, F. ^{[72
,73
]}

Bloms, J. ^{[66
]}

Bortone, A. ^{[72
,73
]}

Boyko, I. ^{[32
]}

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

Cai, H. ^{[76
]}

Cai, X. ^{[1
,53
,54
]}

Calcaterra, A. ^{[23
]}

Cao, G. F. ^{[1
,60
]}

Cao, N. ^{[1
,60
]}

Cetin, S. A. ^{[58
]}

Chang, J. F. ^{[1
,53
,54
]}

Chang, W. L. ^{[1
,60
]}

Chelkov, G. ^{[32
,82
]}

Chen, C. ^{[39
]}

Chen, G. ^{[1
]}

Chen, H. S. ^{[1
,60
]}

Chen, M. L. ^{[1
,53
,54
]}

Chen, S. J. ^{[38
]}

Chen, T. ^{[1
]}

Chen, X. R. ^{[28
]}

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

Chen, Y. B. ^{[1
,53
,54
]}

Chen, Z. J. ^{[20
,92
]}

Cheng, W. S. ^{[73
]}

Cibinetto, G. ^{[26
]}

Cossio, F. ^{[73
]}

Cui, J. J. ^{[45
]}

Cui, X. F. ^{[39
]}

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,Raiwind Rd, Lahore, 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] INFN Lab Nazl Frascati, I-00044 Frascati, Italy

[24] INFN Sez Perugia, I-06100 Perugia, Italy

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

[26] INFN 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

来源：

PHYSICAL REVIEW LETTERS | 2022年 / 129卷 / 19期

基金：

中国国家自然科学基金; 国家重点研发计划; 瑞典研究理事会;

关键词：

PARTIAL-WAVE ANALYSES; HYBRID MESONS; DECAY; GLUEBALLS; SYSTEM; MODEL;

D O I：

10.1103/PhysRevLett.129.192002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using a sample of (10.09 +/- 0.04) x 10(9) J/psi events collected with the BESIII detector operating at the BEPCII storage ring, a partial wave analysis of the decay J/psi -> gamma eta eta ' is performed. The first observation of an isoscalar state with exotic quantum numbers J(PC) = 1(-+), denoted as eta(1) (1855), is reported in the process J/psi -> gamma eta(1) (1855) with eta(1) (1855) -> eta eta '. Its mass and width are measured to be (1855 +/- 9(-1)(+6) MeV/c(2) and (188 +/- 18(-8)(+3) MeV, respectively, where the first uncertainties are statistical and the second are systematic, and its statistical significance is estimated to be larger than 19 sigma.

引用

页数：9

共 39 条

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