doi: 10.1103/PhysRevLett.130.211901.
Precision Measurement of the Decay Σ^{+}→pγ in the Process J/ψ→Σ^{+}Σ[over ¯]^{-}
M Ablikim
1
, M N Achasov
2
, P Adlarson
3
, R Aliberti
4
, A Amoroso
5
6
, M R An
7
, Q An
8
9
, Y Bai
10
, O Bakina
11
, I Balossino
12
, Y Ban
13
, V Batozskaya
1
14
, K Begzsuren
15
, N Berger
4
, M Bertani
16
, D Bettoni
12
, F Bianchi
5
6
, E Bianco
5
6
, J Bloms
17
, A Bortone
5
6
, I Boyko
11
, R A Briere
18
, A Brueggemann
17
, H Cai
19
, X Cai
1
8
, A Calcaterra
16
, G F Cao
1
20
, N Cao
1
20
, S A Cetin
21
, J F Chang
1
8
, T T Chang
22
, W L Chang
1
20
, G R Che
23
, G Chelkov
11
, C Chen
23
, Chao Chen
24
, G Chen
1
, H S Chen
1
20
, M L Chen
1
8
20
, S J Chen
25
, S M Chen
26
, T Chen
1
20
, X R Chen
27
20
, X T Chen
1
20
, Y B Chen
1
8
, Y Q Chen
28
, Z J Chen
29
, W S Cheng
6
, S K Choi
30
, X Chu
23
, G Cibinetto
12
, S C Coen
31
, F Cossio
6
, J J Cui
32
, H L Dai
1
8
, J P Dai
33
, A Dbeyssi
34
, R E de Boer
31
, D Dedovich
11
, Z Y Deng
1
, A Denig
4
, I Denysenko
11
, M Destefanis
5
6
, F De Mori
5
6
, B Ding
1
35
, X X Ding
13
, Y Ding
36
, Y Ding
28
, J Dong
1
8
, L Y Dong
1
20
, M Y Dong
1
8
20
, X Dong
19
, S X Du
37
, Z H Duan
25
, P Egorov
11
, Y L Fan
19
, J Fang
1
8
, S S Fang
1
20
, W X Fang
1
, Y Fang
1
, R Farinelli
12
, L Fava
38
6
, F Feldbauer
31
, G Felici
16
, C Q Feng
8
9
, J H Feng
39
, K Fischer
40
, M Fritsch
31
, C Fritzsch
17
, C D Fu
1
, Y W Fu
1
, H Gao
20
, Y N Gao
13
, Yang Gao
8
9
, S Garbolino
6
, I Garzia
12
41
, P T Ge
19
, Z W Ge
25
, C Geng
39
, E M Gersabeck
42
, A Gilman
40
, K Goetzen
43
, L Gong
36
, W X Gong
1
8
, W Gradl
4
, S Gramigna
12
41
, M Greco
5
6
, M H Gu
1
8
, Y T Gu
44
, C Y Guan
1
20
, Z L Guan
45
, A Q Guo
27
20
, L B Guo
46
, R P Guo
47
, Y P Guo
48
, A Guskov
11
, X T H
1
20
, W Y Han
7
, X Q Hao
49
, F A Harris
50
, K K He
24
, K L He
1
20
, F H Heinsius
31
, C H Heinz
4
, Y K Heng
1
8
20
, C Herold
51
, T Holtmann
31
, P C Hong
48
, G Y Hou
1
20
, Y R Hou
20
, Z L Hou
1
, H M Hu
1
20
, J F Hu
52
, T Hu
1
8
20
, Y Hu
1
, G S Huang
8
9
, K X Huang
39
, L Q Huang
27
20
, X T Huang
32
, Y P Huang
1
, T Hussain
53
, N Hüsken
54
4
, W Imoehl
54
, M Irshad
8
9
, J Jackson
54
, S Jaeger
31
, S Janchiv
15
, J H Jeong
30
, Q Ji
1
, Q P Ji
49
, X B Ji
1
20
, X L Ji
1
8
, Y Y Ji
32
, Z K Jia
8
9
, P C Jiang
13
, S S Jiang
7
, T J Jiang
55
, X S Jiang
1
8
20
, Y Jiang
20
, J B Jiao
32
, Z Jiao
56
, S Jin
25
, Y Jin
35
, M Q Jing
1
20
, T Johansson
3
, X K
1
, S Kabana
57
, N Kalantar-Nayestanaki
58
, X L Kang
59
, X S Kang
36
, R Kappert
58
, M Kavatsyuk
58
, B C Ke
37
, A Khoukaz
17
, R Kiuchi
1
, R Kliemt
43
, L Koch
60
, O B Kolcu
21
, B Kopf
31
, M Kuessner
31
, A Kupsc
14
3
, W Kühn
60
, J J Lane
42
, J S Lange
60
, P Larin
34
, A Lavania
61
, L Lavezzi
5
6
, T T Lei
9
, Z H Lei
8
9
, H Leithoff
4
, M Lellmann
4
, T Lenz
4
, C Li
23
, C Li
62
, C H Li
7
, Cheng Li
8
9
, D M Li
37
, F Li
1
8
, G Li
1
, H Li
8
9
, H B Li
1
20
, H J Li
49
, H N Li
52
, Hui Li
23
, J R Li
26
, J S Li
39
, J W Li
32
, Ke Li
1
, L J Li
1
20
, L K Li
1
, Lei Li
63
, M H Li
23
, P R Li
64
, S X Li
48
, T Li
32
, W D Li
1
20
, W G Li
1
, X H Li
8
9
, X L Li
32
, Xiaoyu Li
1
20
, Y G Li
13
, Z J Li
39
, Z X Li
44
, Z Y Li
39
, C Liang
25
, H Liang
8
9
, H Liang
1
20
, H Liang
28
, Y F Liang
65
, Y T Liang
27
20
, G R Liao
66
, L Z Liao
32
, J Libby
61
, A Limphirat
51
, D X Lin
27
20
, T Lin
1
, B J Liu
1
, B X Liu
19
, C Liu
28
, C X Liu
1
, D Liu
34
9
, F H Liu
67
, Fang Liu
1
, Feng Liu
68
, G M Liu
52
, H Liu
64
, H B Liu
44
, H M Liu
1
20
, Huanhuan Liu
1
, Huihui Liu
69
, J B Liu
8
9
, J L Liu
70
, J Y Liu
1
20
, K Liu
1
, K Y Liu
36
, Ke Liu
45
, L Liu
8
9
, L C Liu
23
, Lu Liu
23
, M H Liu
48
, P L Liu
1
, Q Liu
20
, S B Liu
8
9
, T Liu
48
, W K Liu
23
, W M Liu
8
9
, X Liu
64
, Y Liu
64
, Y B Liu
23
, Z A Liu
1
8
20
, Z Q Liu
32
, X C Lou
1
8
20
, F X Lu
39
, H J Lu
56
, J G Lu
1
8
, X L Lu
1
, Y Lu
71
, Y P Lu
1
8
, Z H Lu
1
20
, C L Luo
46
, M X Luo
72
, T Luo
48
, X L Luo
1
8
, X R Lyu
20
, Y F Lyu
23
, F C Ma
36
, H L Ma
1
, J L Ma
1
20
, L L Ma
32
, M M Ma
1
20
, Q M Ma
1
, R Q Ma
1
20
, R T Ma
20
, X Y Ma
1
8
, Y Ma
13
, F E Maas
34
, M Maggiora
5
6
, S Maldaner
31
, S Malde
40
, A Mangoni
73
, Y J Mao
13
, Z P Mao
1
, S Marcello
5
6
, Z X Meng
35
, J G Messchendorp
43
58
, G Mezzadri
12
, H Miao
1
20
, T J Min
25
, R E Mitchell
54
, X H Mo
1
8
20
, N Yu Muchnoi
2
, Y Nefedov
11
, F Nerling
34
, I B Nikolaev
2
, Z Ning
1
8
, S Nisar
74
, Y Niu
32
, S L Olsen
20
, Q Ouyang
1
8
20
, S Pacetti
73
75
, X Pan
24
, Y Pan
10
, A Pathak
28
, Y P Pei
8
9
, M Pelizaeus
31
, H P Peng
8
9
, K Peters
43
, J L Ping
46
, R G Ping
1
20
, S Plura
4
, S Pogodin
11
, V Prasad
57
, F Z Qi
1
, H Qi
8
9
, H R Qi
26
, M Qi
25
, T Y Qi
48
, S Qian
1
8
, W B Qian
20
, C F Qiao
20
, J J Qin
70
, L Q Qin
66
, X P Qin
48
, X S Qin
32
, Z H Qin
1
8
, J F Qiu
1
, S Q Qu
26
, C F Redmer
4
, K J Ren
7
, A Rivetti
6
, V Rodin
58
, M Rolo
6
, G Rong
1
20
, Ch Rosner
34
, S N Ruan
23
, N Salone
14
, A Sarantsev
11
, Y Schelhaas
4
, K Schoenning
3
, M Scodeggio
12
41
, K Y Shan
48
, W Shan
76
, X Y Shan
8
9
, J F Shangguan
24
, L G Shao
1
20
, M Shao
8
9
, C P Shen
48
, H F Shen
1
20
, W H Shen
20
, X Y Shen
1
20
, B A Shi
20
, H C Shi
8
9
, J Y Shi
1
, Q Q Shi
24
, R S Shi
1
20
, X Shi
1
8
, J J Song
49
, T Z Song
39
, W M Song
1
28
, Y X Song
13
, S Sosio
5
6
, S Spataro
5
6
, F Stieler
4
, Y J Su
20
, G B Sun
19
, G X Sun
1
, H Sun
20
, H K Sun
1
, J F Sun
49
, K Sun
26
, L Sun
19
, S S Sun
1
20
, T Sun
1
20
, W Y Sun
28
, Y Sun
59
, Y J Sun
8
9
, Y Z Sun
1
, Z T Sun
32
, Y X Tan
8
9
, C J Tang
65
, G Y Tang
1
, J Tang
39
, Y A Tang
19
, L Y Tao
70
, Q T Tao
29
, M Tat
40
, J X Teng
8
9
, V Thoren
3
, W H Tian
77
, W H Tian
39
, Y Tian
27
20
, Z F Tian
19
, I Uman
78
, B Wang
1
, B L Wang
20
, Bo Wang
8
9
, C W Wang
25
, D Y Wang
13
, F Wang
70
, H J Wang
64
, H P Wang
1
20
, K Wang
1
8
, L L Wang
1
, M Wang
32
, Meng Wang
1
20
, S Wang
64
, S Wang
48
, T Wang
48
, T J Wang
23
, W Wang
70
, W Wang
39
, W H Wang
19
, W P Wang
8
9
, X Wang
13
, X F Wang
64
, X J Wang
7
, X L Wang
48
, Y Wang
26
, Y D Wang
79
, Y F Wang
1
8
20
, Y H Wang
62
, Y N Wang
79
, Y Q Wang
1
, Yaqian Wang
1
80
, Yi Wang
26
, Z Wang
1
8
, Z L Wang
70
, Z Y Wang
1
20
, Ziyi Wang
20
, D Wei
81
, D H Wei
66
, F Weidner
17
, S P Wen
1
, C W Wenzel
31
, U Wiedner
31
, G Wilkinson
40
, M Wolke
3
, L Wollenberg
31
, C Wu
7
, J F Wu
1
20
, L H Wu
1
, L J Wu
1
20
, X Wu
48
, X H Wu
28
, Y Wu
9
, Y J Wu
27
, Z Wu
1
8
, L Xia
8
9
, X M Xian
7
, T Xiang
13
, D Xiao
64
, G Y Xiao
25
, H Xiao
48
, S Y Xiao
1
, Y L Xiao
48
, Z J Xiao
46
, C Xie
25
, X H Xie
13
, Y Xie
32
, Y G Xie
1
8
, Y H Xie
68
, Z P Xie
8
9
, T Y Xing
1
20
, C F Xu
1
20
, C J Xu
39
, G F Xu
1
, H Y Xu
35
, Q J Xu
55
, W L Xu
35
, X P Xu
24
, Y C Xu
82
, Z P Xu
25
, F Yan
48
, L Yan
48
, W B Yan
8
9
, W C Yan
37
, X Q Yan
1
, H J Yang
83
, H L Yang
28
, H X Yang
1
, Tao Yang
1
, Y Yang
48
, Y F Yang
23
, Y X Yang
1
20
, Yifan Yang
1
20
, Z W Yang
64
, M Ye
1
8
, M H Ye
84
, J H Yin
1
, Z Y You
39
, B X Yu
1
8
20
, C X Yu
23
, G Yu
1
20
, T Yu
70
, X D Yu
13
, C Z Yuan
1
20
, L Yuan
85
, S C Yuan
1
, X Q Yuan
1
, Y Yuan
1
20
, Z Y Yuan
39
, C X Yue
7
, A A Zafar
53
, F R Zeng
32
, X Zeng
48
, Y Zeng
29
, Y J Zeng
1
20
, X Y Zhai
28
, Y H Zhan
39
, A Q Zhang
1
20
, B L Zhang
1
20
, B X Zhang
1
, D H Zhang
23
, G Y Zhang
49
, H Zhang
9
, H H Zhang
28
, H H Zhang
39
, H Q Zhang
1
8
20
, H Y Zhang
1
8
, J J Zhang
77
, J L Zhang
22
, J Q Zhang
46
, J W Zhang
1
8
20
, J X Zhang
64
, J Y Zhang
1
, J Z Zhang
1
20
, Jiawei Zhang
1
20
, L M Zhang
26
, L Q Zhang
39
, Lei Zhang
25
, P Zhang
1
, Q Y Zhang
7
37
, Shuihan Zhang
1
20
, Shulei Zhang
29
, X D Zhang
79
, X M Zhang
1
, X Y Zhang
24
, X Y Zhang
32
, Y Zhang
40
, Y T Zhang
37
, Y H Zhang
1
8
, Yan Zhang
8
9
, Yao Zhang
1
, Z H Zhang
1
, Z L Zhang
28
, Z Y Zhang
23
, Z Y Zhang
19
, G Zhao
1
, J Zhao
7
, J Y Zhao
1
20
, J Z Zhao
1
8
, Lei Zhao
8
9
, Ling Zhao
1
, M G Zhao
23
, S J Zhao
37
, Y B Zhao
1
8
, Y X Zhao
27
20
, Z G Zhao
8
9
, A Zhemchugov
11
, B Zheng
70
, J P Zheng
1
8
, W J Zheng
1
20
, Y H Zheng
20
, B Zhong
46
, X Zhong
39
, H Zhou
32
, L P Zhou
1
20
, X Zhou
19
, X K Zhou
68
, X R Zhou
8
9
, X Y Zhou
7
, Y Z Zhou
48
, J Zhu
23
, K Zhu
1
, K J Zhu
1
8
20
, L Zhu
28
, L X Zhu
20
, S H Zhu
81
, S Q Zhu
25
, T J Zhu
48
, W J Zhu
48
, Y C Zhu
8
9
, Z A Zhu
1
20
, J H Zou
1
, J Zu
8
9
; BESIII Collaboration
Affiliations
Affiliations
- 1 Institute of High Energy Physics, Beijing 100049, People's Republic of China.
- 2 G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia.
- 3 Uppsala University, Box 516, SE-75120 Uppsala, Sweden.
- 4 Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
- 5 University of Turin, I-10125 Turin, Italy.
- 6 INFN, I-10125 Turin, Italy.
- 7 Liaoning Normal University, Dalian 116029, People's Republic of China.
- 8 State Key Laboratory of Particle Detection and Electronics, Beijing 100049, Hefei 230026, People's Republic of China.
- 9 University of Science and Technology of China, Hefei 230026, People's Republic of China.
- 10 Southeast University, Nanjing 211100, People's Republic of China.
- 11 Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia.
- 12 INFN Sezione di Ferrara, I-44122 Ferrara, Italy.
- 13 Peking University, Beijing 100871, People's Republic of China.
- 14 National Centre for Nuclear Research, Warsaw 02-093, Poland.
- 15 Institute of Physics and Technology, Peace Avenue 54B, Ulaanbaatar 13330, Mongolia.
- 16 INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.
- 17 University of Muenster, Wilhelm-Klemm-Strasse 9, 48149 Muenster, Germany.
- 18 Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
- 19 Wuhan University, Wuhan 430072, People's Republic of China.
- 20 University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
- 21 Turkish Accelerator Center Particle Factory Group, Istinye University, 34010 Istanbul, Turkey.
- 22 Xinyang Normal University, Xinyang 464000, People's Republic of China.
- 23 Nankai University, Tianjin 300071, People's Republic of China.
- 24 Soochow University, Suzhou 215006, People's Republic of China.
- 25 Nanjing University, Nanjing 210093, People's Republic of China.
- 26 Tsinghua University, Beijing 100084, People's Republic of China.
- 27 Institute of Modern Physics, Lanzhou 730000, People's Republic of China.
- 28 Jilin University, Changchun 130012, People's Republic of China.
- 29 Hunan University, Changsha 410082, People's Republic of China.
- 30 Chung-Ang University, Seoul 06974, Republic of Korea.
- 31 Bochum Ruhr-University, D-44780 Bochum, Germany.
- 32 Shandong University, Jinan 250100, People's Republic of China.
- 33 Yunnan University, Kunming 650500, People's Republic of China.
- 34 Helmholtz Institute Mainz, Staudinger Weg 18, D-55099 Mainz, Germany.
- 35 University of Jinan, Jinan 250022, People's Republic of China.
- 36 Liaoning University, Shenyang 110036, People's Republic of China.
- 37 Zhengzhou University, Zhengzhou 450001, People's Republic of China.
- 38 University of Eastern Piedmont, I-15121 Alessandria, Italy.
- 39 Sun Yat-Sen University, Guangzhou 510275, People's Republic of China.
- 40 University of Oxford, Keble Road, Oxford OX13RH, United Kingdom.
- 41 University of Ferrara, I-44122 Ferrara, Italy.
- 42 University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom.
- 43 GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany.
- 44 Guangxi University, Nanning 530004, People's Republic of China.
- 45 Henan University of Technology, Zhengzhou 450001, People's Republic of China.
- 46 Nanjing Normal University, Nanjing 210023, People's Republic of China.
- 47 Shandong Normal University, Jinan 250014, People's Republic of China.
- 48 Fudan University, Shanghai 200433, People's Republic of China.
- 49 Henan Normal University, Xinxiang 453007, People's Republic of China.
- 50 University of Hawaii, Honolulu, Hawaii 96822, USA.
- 51 Suranaree University of Technology, University Avenue 111, Nakhon Ratchasima 30000, Thailand.
- 52 South China Normal University, Guangzhou 510006, People's Republic of China.
- 53 University of the Punjab, Lahore-54590, Pakistan.
- 54 Indiana University, Bloomington, Indiana 47405, USA.
- 55 Hangzhou Normal University, Hangzhou 310036, People's Republic of China.
- 56 Huangshan College, Huangshan 245000, People's Republic of China.
- 57 Instituto de Alta Investigación, Universidad de Tarapacá, Casilla 7D, 1000000 Arica, Chile.
- 58 University of Groningen, NL-9747 AA Groningen, The Netherlands.
- 59 China University of Geosciences, Wuhan 430074, People's Republic of China.
- 60 Justus-Liebig-Universitaet Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany.
- 61 Indian Institute of Technology Madras, Chennai 600036, India.
- 62 Qufu Normal University, Qufu 273165, People's Republic of China.
- 63 Beijing Institute of Petrochemical Technology, Beijing 102617, People's Republic of China.
- 64 Lanzhou University, Lanzhou 730000, People's Republic of China.
- 65 Sichuan University, Chengdu 610064, People's Republic of China.
- 66 Guangxi Normal University, Guilin 541004, People's Republic of China.
- 67 Shanxi University, Taiyuan 030006, People's Republic of China.
- 68 Central China Normal University, Wuhan 430079, People's Republic of China.
- 69 Henan University of Science and Technology, Luoyang 471003, People's Republic of China.
- 70 University of South China, Hengyang 421001, People's Republic of China.
- 71 Central South University, Changsha 410083, People's Republic of China.
- 72 Zhejiang University, Hangzhou 310027, People's Republic of China.
- 73 INFN Sezione di Perugia, I-06100 Perugia, Italy.
- 74 COMSATS University Islamabad, Lahore Campus, Defence Road, Off Raiwind Road, 54000 Lahore, Pakistan.
- 75 University of Perugia, I-06100 Perugia, Italy.
- 76 Hunan Normal University, Changsha 410081, People's Republic of China.
- 77 Shanxi Normal University, Linfen 041004, People's Republic of China.
- 78 Near East University, Nicosia, North Cyprus, 99138, Mersin 10, Turkey.
- 79 North China Electric Power University, Beijing 102206, People's Republic of China.
- 80 Hebei University, Baoding 071002, People's Republic of China.
- 81 University of Science and Technology Liaoning, Anshan 114051, People's Republic of China.
- 82 Yantai University, Yantai 264005, People's Republic of China.
- 83 Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.
- 84 China Center of Advanced Science and Technology, Beijing 100190, People's Republic of China.
- 85 Beihang University, Beijing 100191, People's Republic of China.
- PMID: 37295102
- DOI: 10.1103/PhysRevLett.130.211901
Item in Clipboard
Precision Measurement of the Decay Σ^{+}→pγ in the Process J/ψ→Σ^{+}Σ[over ¯]^{-}
M Ablikim et al.
Phys Rev Lett.
.
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doi: 10.1103/PhysRevLett.130.211901.
Authors
M Ablikim
1
, M N Achasov
2
, P Adlarson
3
, R Aliberti
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, Lei Zhao
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, Ling Zhao
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; BESIII Collaboration
Affiliations
- 1 Institute of High Energy Physics, Beijing 100049, People's Republic of China.
- 2 G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia.
- 3 Uppsala University, Box 516, SE-75120 Uppsala, Sweden.
- 4 Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany.
- 5 University of Turin, I-10125 Turin, Italy.
- 6 INFN, I-10125 Turin, Italy.
- 7 Liaoning Normal University, Dalian 116029, People's Republic of China.
- 8 State Key Laboratory of Particle Detection and Electronics, Beijing 100049, Hefei 230026, People's Republic of China.
- 9 University of Science and Technology of China, Hefei 230026, People's Republic of China.
- 10 Southeast University, Nanjing 211100, People's Republic of China.
- 11 Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia.
- 12 INFN Sezione di Ferrara, I-44122 Ferrara, Italy.
- 13 Peking University, Beijing 100871, People's Republic of China.
- 14 National Centre for Nuclear Research, Warsaw 02-093, Poland.
- 15 Institute of Physics and Technology, Peace Avenue 54B, Ulaanbaatar 13330, Mongolia.
- 16 INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.
- 17 University of Muenster, Wilhelm-Klemm-Strasse 9, 48149 Muenster, Germany.
- 18 Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
- 19 Wuhan University, Wuhan 430072, People's Republic of China.
- 20 University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
- 21 Turkish Accelerator Center Particle Factory Group, Istinye University, 34010 Istanbul, Turkey.
- 22 Xinyang Normal University, Xinyang 464000, People's Republic of China.
- 23 Nankai University, Tianjin 300071, People's Republic of China.
- 24 Soochow University, Suzhou 215006, People's Republic of China.
- 25 Nanjing University, Nanjing 210093, People's Republic of China.
- 26 Tsinghua University, Beijing 100084, People's Republic of China.
- 27 Institute of Modern Physics, Lanzhou 730000, People's Republic of China.
- 28 Jilin University, Changchun 130012, People's Republic of China.
- 29 Hunan University, Changsha 410082, People's Republic of China.
- 30 Chung-Ang University, Seoul 06974, Republic of Korea.
- 31 Bochum Ruhr-University, D-44780 Bochum, Germany.
- 32 Shandong University, Jinan 250100, People's Republic of China.
- 33 Yunnan University, Kunming 650500, People's Republic of China.
- 34 Helmholtz Institute Mainz, Staudinger Weg 18, D-55099 Mainz, Germany.
- 35 University of Jinan, Jinan 250022, People's Republic of China.
- 36 Liaoning University, Shenyang 110036, People's Republic of China.
- 37 Zhengzhou University, Zhengzhou 450001, People's Republic of China.
- 38 University of Eastern Piedmont, I-15121 Alessandria, Italy.
- 39 Sun Yat-Sen University, Guangzhou 510275, People's Republic of China.
- 40 University of Oxford, Keble Road, Oxford OX13RH, United Kingdom.
- 41 University of Ferrara, I-44122 Ferrara, Italy.
- 42 University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom.
- 43 GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany.
- 44 Guangxi University, Nanning 530004, People's Republic of China.
- 45 Henan University of Technology, Zhengzhou 450001, People's Republic of China.
- 46 Nanjing Normal University, Nanjing 210023, People's Republic of China.
- 47 Shandong Normal University, Jinan 250014, People's Republic of China.
- 48 Fudan University, Shanghai 200433, People's Republic of China.
- 49 Henan Normal University, Xinxiang 453007, People's Republic of China.
- 50 University of Hawaii, Honolulu, Hawaii 96822, USA.
- 51 Suranaree University of Technology, University Avenue 111, Nakhon Ratchasima 30000, Thailand.
- 52 South China Normal University, Guangzhou 510006, People's Republic of China.
- 53 University of the Punjab, Lahore-54590, Pakistan.
- 54 Indiana University, Bloomington, Indiana 47405, USA.
- 55 Hangzhou Normal University, Hangzhou 310036, People's Republic of China.
- 56 Huangshan College, Huangshan 245000, People's Republic of China.
- 57 Instituto de Alta Investigación, Universidad de Tarapacá, Casilla 7D, 1000000 Arica, Chile.
- 58 University of Groningen, NL-9747 AA Groningen, The Netherlands.
- 59 China University of Geosciences, Wuhan 430074, People's Republic of China.
- 60 Justus-Liebig-Universitaet Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany.
- 61 Indian Institute of Technology Madras, Chennai 600036, India.
- 62 Qufu Normal University, Qufu 273165, People's Republic of China.
- 63 Beijing Institute of Petrochemical Technology, Beijing 102617, People's Republic of China.
- 64 Lanzhou University, Lanzhou 730000, People's Republic of China.
- 65 Sichuan University, Chengdu 610064, People's Republic of China.
- 66 Guangxi Normal University, Guilin 541004, People's Republic of China.
- 67 Shanxi University, Taiyuan 030006, People's Republic of China.
- 68 Central China Normal University, Wuhan 430079, People's Republic of China.
- 69 Henan University of Science and Technology, Luoyang 471003, People's Republic of China.
- 70 University of South China, Hengyang 421001, People's Republic of China.
- 71 Central South University, Changsha 410083, People's Republic of China.
- 72 Zhejiang University, Hangzhou 310027, People's Republic of China.
- 73 INFN Sezione di Perugia, I-06100 Perugia, Italy.
- 74 COMSATS University Islamabad, Lahore Campus, Defence Road, Off Raiwind Road, 54000 Lahore, Pakistan.
- 75 University of Perugia, I-06100 Perugia, Italy.
- 76 Hunan Normal University, Changsha 410081, People's Republic of China.
- 77 Shanxi Normal University, Linfen 041004, People's Republic of China.
- 78 Near East University, Nicosia, North Cyprus, 99138, Mersin 10, Turkey.
- 79 North China Electric Power University, Beijing 102206, People's Republic of China.
- 80 Hebei University, Baoding 071002, People's Republic of China.
- 81 University of Science and Technology Liaoning, Anshan 114051, People's Republic of China.
- 82 Yantai University, Yantai 264005, People's Republic of China.
- 83 Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.
- 84 China Center of Advanced Science and Technology, Beijing 100190, People's Republic of China.
- 85 Beihang University, Beijing 100191, People's Republic of China.
- PMID: 37295102
- DOI: 10.1103/PhysRevLett.130.211901
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Abstract
Using (10 087±44)×10^{6} J/ψ events collected with the BESIII detector, the radiative hyperon decay Σ^{+}→pγ is studied at an electron-positron collider experiment for the first time. The absolute branching fraction is measured to be (0.996±0.021_{stat}±0.018_{syst})×10^{-3}, which is lower than its world average value by 4.2 standard deviations. Its decay asymmetry parameter is determined to be -0.652±0.056_{stat}±0.020_{syst}. The branching fraction and decay asymmetry parameter are the most precise to date, and the accuracies are improved by 78% and 34%, respectively.
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