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".

引用

页数：18

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