Study of e+ e- → ωX(3872) and γX(3872) from 4.66 to 4.95 GeV

被引：1
|
作者：
Ablikim, M. [1 ]
Achasov, M. N. [4 ,88 ]
Adlarson, P. [81 ]
Afedulidis, O. [3 ]
Ai, X. C. [86 ]
Aliberti, R. [38 ]
Amoroso, A. [78 ,80 ]
An, Q. [61 ,75 ]
Bai, Y. [60 ]
Bakina, O. [39 ]
Balossino, I. [31 ]
Ban, Y. [49 ,96 ]
Bao, H. -R. [67 ]
Batozskaya, V. [1 ,47 ]
Begzsuren, K. [35 ]
Berger, N. [38 ]
Berlowski, M. [47 ]
Bertani, M. [28 ]
Bettoni, D. [31 ]
Bianchi, F. [78 ,80 ]
Bianco, E. [78 ,80 ]
Bortone, A. [78 ,80 ]
Boyko, I. [39 ]
Briere, R. A. [5 ]
Brueggemann, A. [72 ]
Cai, H. [82 ]
Cai, X. [1 ,61 ]
Calcaterra, A. [28 ]
Cao, G. F. [1 ,67 ]
Cao, N. [1 ,67 ]
Cetin, S. A. [65 ]
Chang, J. F. [1 ,61 ]
Che, G. R. [46 ]
Chelkov, G. [39 ,87 ]
Chen, C. [46 ]
Chen, C. H. [9 ]
Chen, Chao [58 ]
Chen, G. [1 ]
Chen, H. S. [1 ,67 ]
Chen, H. Y. [20 ]
Chen, M. L. [1 ,61 ,67 ]
Chen, S. J. [45 ]
Chen, S. L. [48 ]
Chen, S. M. [64 ]
Chen, T. [1 ,67 ]
Chen, X. R. [34 ,67 ]
Chen, X. T. [1 ,67 ]
Chen, Y. B. [1 ,61 ]
Chen, Y. Q. [37 ]
Chen, Z. J. [25 ,97 ]
机构：
[1] Inst High Energy Phys, Beijing 100049, Peoples R China
[2] Beihang Univ, Beijing 100191, Peoples R China
[3] Bochum Ruhr Univ, D-44780 Bochum, Germany
[4] Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia
[5] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA
[6] Cent China Normal Univ, Wuhan 430079, Peoples R China
[7] Cent South Univ, Changsha 410083, Peoples R China
[8] China Ctr Adv Sci & Technol, Beijing 100190, Peoples R China
[9] China Univ Geosci, Wuhan 430074, Peoples R China
[10] Chung Ang Univ, Seoul 06974, South Korea
[11] COMSATS Univ Islamabad, Lahore Campus,Def Rd,Off Raiwind Rd, Lahore 54000, Pakistan
[12] Fudan Univ, Shanghai 200433, Peoples R China
[13] GSI Helmholtzctr Heavy Ion Res GmbH, D-64291 Darmstadt, Germany
[14] Guangxi Normal Univ, Guilin 541004, Peoples R China
[15] Guangxi Univ, Nanning 530004, Peoples R China
[16] Hangzhou Normal Univ, Hangzhou 310036, Peoples R China
[17] Hebei Univ, Baoding 071002, Peoples R China
[18] Helmholtz Inst Mainz, Staudinger Weg 18, D-55099 Mainz, Germany
[19] Henan Normal Univ, Xinxiang 453007, Henan, Peoples R China
[20] Henan Univ, Kaifeng 475004, Peoples R China
[21] Henan Univ Sci & Technol, Luoyang 471003, Peoples R China
[22] Henan Univ Technol, Zhengzhou 450001, Peoples R China
[23] Huangshan Coll, Huangshan 245000, Peoples R China
[24] Hunan Normal Univ, Changsha 410081, Peoples R China
[25] Hunan Univ, Changsha 410082, Peoples R China
[26] Indian Inst Technol Madras, Chennai 600036, Tamil Nadu, India
[27] Indiana Univ, Bloomington, IN 47405 USA
[28] INFN, Lab Nazl Frascati, I-00044 Frascati, Italy
[29] INFN, Sez Perugia, I-06100 Perugia, Italy
[30] Univ Perugia, I-06100 Perugia, Italy
[31] INFN, Sez Ferrara, I-44122 Ferrara, Italy
[32] Univ Ferrara, I-44122 Ferrara, Italy
[33] Inner Mongolia Univ, Hohhot 010021, Peoples R China
[34] Inst Modern Phys, Lanzhou 730000, Peoples R China
[35] Inst Phys & Technol, Peace Ave 54B, Ulaanbaatar 13330, Mongolia
[36] Univ Tarapaca, Inst Alta Invest, Casilla 7D, Arica 1000000, Chile
[37] Jilin Univ, Changchun 130012, Peoples R China
[38] Johannes Gutenberg Univ Mainz, Johann Joachim Becher Weg 45, D-55099 Mainz, Germany
[39] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia
[40] Justus Liebig Univ Giessen, Phys Inst 2, Heinrich Buff Ring 16, D-35392 Giessen, Germany
[41] Lanzhou Univ, Lanzhou 730000, Peoples R China
[42] Liaoning Normal Univ, Dalian 116029, Peoples R China
[43] Liaoning Univ, Shenyang 110036, Peoples R China
[44] Nanjing Normal Univ, Nanjing 210023, Peoples R China
[45] Nanjing Univ, Nanjing 210093, Peoples R China
[46] Nankai Univ, Tianjin 300071, Peoples R China
[47] Natl Ctr Nucl Res, PL-02093 Warsaw, Poland
[48] North China Elect Power Univ, Beijing 102206, Peoples R China
[49] Peking Univ, Beijing 100871, Peoples R China
[50] Qufu Normal Univ, Qufu 273165, Shandong, Peoples R China
来源：
PHYSICAL REVIEW D | 2024年 / 110卷 / 01期
基金：
新加坡国家研究基金会; 中国博士后科学基金; 瑞典研究理事会; 中国国家自然科学基金;
关键词：
X(3872); DECAYS;
D O I：
10.1103/PhysRevD.110.012006
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Using data samples with an integrated luminosity of 4.5 fb(-1) collected by the BESIII detector at center-of-mass energies ranging from 4.66 GeV to 4.95 GeV, we study the processes of e(+) e(-) -> omega X(3872) and e(+) e(-) -> gamma X(3872). With the e(+) e(-) -> X(3872) process, the branching fraction ratio R = B(X(3872)->gamma J/psi)/B(X(3872)pi(+)pi(-)J/psi is measured to be 0.38 +/- 0.20(stat) +/- 0.01(syst) (R < 0.83 at 90% confidence level). In addition, we measure the ratio of the average cross section of e(+) e(-) -> omega X(3872) to e(+) e(-) -> omega chi(c1)(omega chi(c2)) to be sigma(omega X(3872))/sigma(omega Xc1)(sigma(omega X(3872))/sigma(omega Xc2)) = 5.2 +/- 1.0(stat) +/- 1.9(syst)(5.5 +/- 1.1(stat) +/- 2.4(syst)). Finally, we search for the process of e(+) e(-) -> gamma X(3872), and no obvious signal is observed. The upper limit on the ratio of the average cross section of e(+) e(-) -> gamma X(3872) to e(+) e(-) -> gamma X(3872) is set as sigma(gamma X)(3872)/sigma(omega X(3872)) < 0.23 at 90% confidence level.
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页数：18
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