Measurement of branching fractions of J/ψ and ψ(3686) decays to Σ+ and (Σ)over-bar-

被引：0
|
作者：
Ablikim, M. [1 ]
Achasov, M. N. [10 ,80 ]
Adlarson, P. [74 ]
Ahmed, S. [15 ]
Albrecht, M. [4 ]
Aliberti, R. [31 ]
Amoroso, A. [71 ,72 ]
An, M. R. [35 ]
An, Q. [52 ,53 ,68 ]
Bai, X. H. [62 ]
Bai, Y. [51 ]
Bakina, O. [32 ]
BaldiniFerroli, R. [23 ]
Balossino, I [27 ]
Ban, Y. [41 ,89 ]
Begzsuren, K. [29 ]
Berger, N. [31 ]
Bertani, M. [23 ]
Bettoni, D. [27 ]
Bianchi, F. [71 ,72 ]
Bloms, J. [65 ]
Bortone, A. [71 ,72 ]
Boyko, I [32 ]
Briere, R. A. [5 ]
Cai, H. [75 ]
Cai, X. [1 ,52 ,53 ]
Calcaterra, A. [23 ]
Cao, G. F. [1 ,59 ]
Cao, N. [1 ,59 ]
Cetin, S. A. [57 ,58 ]
Chang, J. F. [1 ,52 ,53 ]
Chang, W. L. [1 ,59 ]
Chelkov, G. [32 ,79 ]
Chen, G. [1 ]
Chen, H. S. [1 ,59 ]
Chen, M. L. [1 ,52 ,53 ]
Chen, S. J. [38 ]
Chen, X. R. [28 ]
Chen, Y. B. [1 ,52 ,53 ]
Chen, Z. J. [20 ,90 ]
Cheng, W. S. [71 ,72 ]
Cibinetto, G. [27 ]
Cossio, F. [71 ,72 ]
Cui, X. F. [39 ]
Dai, H. L. [1 ,52 ,53 ]
Dai, J. P. [45 ,83 ,84 ,85 ]
Dai, X. C. [1 ,59 ]
Dbeyssi, A. [15 ]
de Boer, R. E. [4 ]
Dedovich, D. [32 ]
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 200443, 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] Guangxi Univ, Nanning 530004, Peoples R China
[14] Hangzhou Normal Univ, Hangzhou 310036, Peoples R China
[15] Helmholtz Inst Mainz, Staudinger Weg 18, D-55099 Mainz, Germany
[16] Henan Normal Univ, Xinxiang 453007, Henan, Peoples R China
[17] Henan Univ Sci & Technol, Luoyang 471003, 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] North China Elect Power Univ, Beijing 102206, Peoples R China
[41] Peking Univ, Beijing 100871, Peoples R China
[42] Qufu Normal Univ, Qufu 273165, Shandong, Peoples R China
[43] Shandong Normal Univ, Jinan 250014, Peoples R China
[44] Shandong Univ, Jinan 250100, Peoples R China
[45] Shanghai Jiao Tong Univ, Shanghai 200240, Peoples R China
[46] Shanxi Normal Univ, Linfen 041004, Shanxi, Peoples R China
[47] Shanxi Univ, Taiyuan 030006, Peoples R China
[48] Sichuan Univ, Chengdu 610064, Peoples R China
[49] Soochow Univ, Suzhou 215006, Peoples R China
[50] South China Normal Univ, Guangzhou 510006, Peoples R China
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2021年 / 11期
基金：
中国国家自然科学基金; 瑞典研究理事会;
关键词：
Branching fraction; e(+)-e(-) Experiments; QCD; MONTE-CARLO; PHOTOS;
D O I：
10.1007/JHEP11(2021)226
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
Using 1310.6 x 10(6) J/psi and 448.1 x 10(6) psi(3686) events collected with the BESIII detector, the branching fractions of J/psi decays to Sigma(+)(Sigma) over bar (-) is measured to be (10.61 +/- 0.04 +/- 0.36) x 10(-4), which is significantly more precise than the current world average. The branching fractions of psi(3686) decays to Sigma(+)(Sigma) over bar (-) is measured to be (2.52 +/- 0.04 +/- 0.09) x 10(-4), which is consistent with the previous measurements. In addition, the ratio of beta(psi(3686) -> Sigma(+)(Sigma) over bar (-)) / beta(J/psi -> Sigma(+)(Sigma) over bar (-)) is determined to be (23.8 +/- 1.1)% which violates the "12% rule".
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