O. Bakina³⁷, Y. Ban^47,h, H.-R. Bao⁶⁵, V. Batozskaya^1,45, K. Begzsuren³³, N. Berger³⁶, M. Berlowski⁴⁵, M. Bertani^29a, D. Bettoni^30a, F. Bianchi^76a,76c, E. Bianco^76a,76c, A. Bortone^76a,76c, I. Boyko³⁷, R. A. Briere⁵, A. Brueggemann⁷⁰, H. Cai⁷⁸, M. H. Cai^39,k,l, X. Cai^1,59, A. Calcaterra^29a, G. F. Cao^1,65, N. Cao^1,65, S. A. Cetin^63a, X. Y. Chai^47,h, J. F. Chang^1,59, G. R. Che⁴⁴, Y. Z. Che^1,59,65, C. H. Chen⁹, Chao Chen⁵⁶, G. Chen¹, H. S. Chen^1,65, H. Y. Chen²¹, M. L. Chen^1,59,65, S. J. Chen⁴³, S. L. Chen⁴⁶, S. M. Chen⁶², T. Chen^1,65, X. R. Chen^32,65, X. T. Chen^1,65, X. Y. Chen^12,g, Y. B. Chen^1,59, Y. Q. Chen¹⁶, Y. Q. Chen³⁵, Z. Chen²⁵, Z. J. Chen^26,i, Z. K. Chen⁶⁰, S. K. Choi¹⁰, X. Chu^12,g, G. Cibinetto^30a, F. Cossio^76c, J. Cottee-Meldrum⁶⁴, J. J. Cui⁵¹, H. L. Dai^1,59, J. P. Dai⁸⁰, A. Dbeyssi¹⁹, R. E. de Boer³, D. Dedovich³⁷, C. Q. Deng⁷⁴, Z. Y. Deng¹, A. Denig³⁶, I. Denysenko³⁷, M. Destefanis^76a,76c, F. De Mori^76a,76c, B. Ding^68,1, X. X. Ding^47,h, Y. Ding⁴¹, Y. Ding³⁵, Y. X. Ding³¹, J. Dong^1,59, L. Y. Dong^1,65, M. Y. Dong^1,59,65, X. Dong⁷⁸, M. C. Du¹, S. X. Du^12,g, S. X. Du⁸², Y. Y. Duan⁵⁶, P. Egorov^37,b, G. F. Fan⁴³, J. J. Fan²⁰, Y. H. Fan⁴⁶, J. Fang⁶⁰, J. Fang^1,59, S. S. Fang^1,65, W. X. Fang¹, Y. Q. Fang^1,59, R. Farinelli^30a, L. Fava^76b,76c, F. Feldbauer³, G. Felici^29a, C. Q. Feng^73,59, J. H. Feng¹⁶, L. Feng^39,k,l, Q. X. Feng^39,k,l, Y. T. Feng^73,59, M. Fritsch³, C. D. Fu¹, J. L. Fu⁶⁵, Y. W. Fu^1,65, H. Gao⁶⁵, X. B. Gao⁴², Y. Gao^73,59, Y. N. Gao^47,h, Y. N. Gao²⁰, Y. Y. Gao³¹, S. Garbolino^76c, I. Garzia^30a,30b, P. T. Ge²⁰, Z. W. Ge⁴³, C. Geng⁶⁰, E. M. Gersabeck⁶⁹, A. Gilman⁷¹, K. Goetzen¹³, J. D. Gong³⁵, L. Gong⁴¹, W. X. Gong^1,59, W. Gradl³⁶, S. Gramigna^30a,30b, M. Greco^76a,76c, M. H. Gu^1,59, Y. T. Gu¹⁵, C. Y. Guan^1,65, A. Q. Guo³², L. B. Guo⁴², M. J. Guo⁵¹, R. P. Guo⁵⁰, Y. P. Guo^12,g, A. Guskov^37,b, J. Gutierrez²⁸, K. L. Han⁶⁵, T. T. Han¹, F. Hanisch³, K. D. Hao^73,59, X. Q. Hao²⁰, F. A. Harris⁶⁷, K. K. He⁵⁶, K. L. He^1,65, F. H. Heinsius³, C. H. Heinz³⁶, Y. K. Heng^1,59,65, C. Herold⁶¹, P. C. Hong³⁵, G. Y. Hou^1,65, X. T. Hou^1,65, Y. R. Hou⁶⁵, Z. L. Hou¹, H. M. Hu^1,65, J. F. Hu^57,j, Q. P. Hu^73,59, S. L. Hu^12,g, T. Hu^1,59,65, Y. Hu¹, Z. M. Hu⁶⁰, G. S. Huang^73,59, K. X. Huang⁶⁰, L. Q. Huang^32,65, P. Huang⁴³, X. T. Huang⁵¹, Y. P. Huang¹, Y. S. Huang⁶⁰, T. Hussain⁷⁵, N. Hüsken³⁶, N. in der Wiesche⁷⁰, J. Jackson²⁸, Q. Ji¹, Q. P. Ji²⁰, W. Ji^1,65, X. B. Ji^1,65, X. L. Ji^1,59, Y. Y. Ji⁵¹, Z. K. Jia^73,59, D. Jiang^1,65, H. B. Jiang⁷⁸, P. C. Jiang^47,h, S. J. Jiang⁹, T. J. Jiang¹⁷, X. S. Jiang^1,59,65, Y. Jiang⁶⁵, J. B. Jiao⁵¹, J. K. Jiao³⁵, Z. Jiao²⁴, S. Jin⁴³, Y. Jin⁶⁸, M. Q. Jing^1,65, X. M. Jing⁶⁵, T. Johansson⁷⁷, S. Kabana³⁴, N. Kalantar-Nayestanaki⁶⁶, X. L. Kang⁹, X. S. Kang⁴¹, M. Kavatsyuk⁶⁶, B. C. Ke⁸², V. Khachatryan²⁸, A. Khoukaz⁷⁰, R. Kiuchi¹, O. B. Kolcu^63a, B. Kopf³, M. Kuessner³, X. Kui^1,65, N. Kumar²⁷, A. Kupsc^45,77, W. Kühn³⁸, Q. Lan⁷⁴, W. N. Lan²⁰, T. T. Lei^73,59, M. Lellmann³⁶, T. Lenz³⁶, C. Li^73,59, C. Li⁴⁴, C. Li⁴⁸, C. H. Li⁴⁰, C. K. Li²¹, D. M. Li⁸², F. Li^1,59, G. Li¹, H. B. Li^1,65, H. J. Li²⁰, H. N. Li^57,j, Hui Li⁴⁴, J. R. Li⁶², J. S. Li⁶⁰, K. Li¹, K. L. Li²⁰, K. L. Li^39,k,l, L. J. Li^1,65, Lei Li⁴⁹, M. H. Li⁴⁴, M. R. Li^1,65, P. L. Li⁶⁵, P. R. Li^39,k,l, Q. M. Li^1,65, Q. X. Li⁵¹, R. Li^18,32, S. X. Li¹², T. Li⁵¹, T. Y. Li⁴⁴, W. D. Li^1,65, W. G. Li^1,a, X. Li^1,65, X. H. Li^73,59, X. L. Li⁵¹, X. Y. Li^1,8, X. Z. Li⁶⁰, Y. Li²⁰, Y. G. Li^47,h, Y. P. Li³⁵, Z. J. Li⁶⁰, Z. Y. Li⁸⁰, H. Liang^73,59, Y. F. Liang⁵⁵, Y. T. Liang^32,65, G. R. Liao¹⁴, L. B. Liao⁶⁰, M. H. Liao⁶⁰, Y. P. Liao^1,65, J. Libby²⁷, A. Limphirat⁶¹, C. C. Lin⁵⁶, D. X. Lin^32,65, L. Q. Lin⁴⁰, T. Lin¹, B. J. Liu¹, B. X. Liu⁷⁸, C. Liu³⁵, C. X. Liu¹, F. Liu¹, F. H. Liu⁵⁴, Feng Liu⁶, G. M. Liu^57,j, H. Liu^39,k,l, H. B. Liu¹⁵, H. H. Liu¹, H. M. Liu^1,65, Huihui Liu²², J. B. Liu^73,59, J. J. Liu²¹, K. Liu⁷⁴, K. Liu^39,k,l, K. Y. Liu⁴¹, Ke Liu²³, L. C. Liu⁴⁴, Lu Liu⁴⁴, M. H. Liu^12,g, P. L. Liu¹, Q. Liu⁶⁵, S. B. Liu^73,59, T. Liu^12,g, W. K. Liu⁴⁴, W. M. Liu^73,59, W. T. Liu⁴⁰, X. Liu⁴⁰, X. Liu^39,k,l, X. K. Liu^39,k,l, X. Y. Liu⁷⁸, Y. Liu⁸², Y. Liu⁸², Y. Liu^39,k,l, Y. B. Liu⁴⁴, Z. A. Liu^1,59,65, Z. D. Liu⁹, Z. Q. Liu⁵¹, X. C. Lou^1,59,65, F. X. Lu⁶⁰, H. J. Lu²⁴, J. G. Lu^1,59, X. L. Lu¹⁶, Y. Lu⁷, Y. H. Lu^1,65, Y. P. Lu^1,59, Z. H. Lu^1,65, C. L. Luo⁴², J. R. Luo⁶⁰, J. S. Luo^1,65, M. X. Luo⁸¹, T. Luo^12,g, X. L. Luo^1,59, Z. Y. Lv²³, X. R. Lyu^65,p, Y. F. Lyu⁴⁴, Y. H. Lyu⁸², F. C. Ma⁴¹, H. L. Ma¹, J. L. Ma^1,65, L. L. Ma⁵¹, L. R. Ma⁶⁸, Q. M. Ma¹, R. Q. Ma^1,65, R. Y. Ma²⁰, T. Ma^73,59, X. T. Ma^1,65, X. Y. Ma^1,59, Y. M. Ma³², F. E. Maas¹⁹, I. MacKay⁷¹, M. Maggiora^76a,76c, S. Malde⁷¹, Q. A. Malik⁷⁵, H. X. Mao^39,k,l, Y. J. Mao^47,h, Z. P. Mao¹, S. Marcello^76a,76c, A. Marshall⁶⁴, F. M. Melendi^30a,30b, Y. H. Meng⁶⁵, Z. X. Meng⁶⁸, G. Mezzadri^30a, H. Miao^1,65, T. J. Min⁴³, R. E. Mitchell²⁸, X. H. Mo^1,59,65, B. Moses²⁸, N. Yu. Muchnoi^4,c, J. Muskalla³⁶, Y. Nefedov³⁷, F. Nerling^19,e, L. S. Nie²¹, I. B. Nikolaev^4,c, Z. Ning^1,59, S. Nisar^11,m, Q. L. Niu^39,k,l, W. D. Niu^12,g, C. Normand⁶⁴, S. L. Olsen^10,65, Q. Ouyang^1,59,65, S. Pacetti^29b,29c, X. Pan⁵⁶, Y. Pan⁵⁸, A. Pathak¹⁰, Y. P. Pei^73,59, M. Pelizaeus³, H. P. Peng^73,59, X. J. Peng^39,k,l, Y. Y. Peng^39,k,l, K. Peters^13,e, K. Petridis⁶⁴, J. L. Ping⁴², R. G. Ping^1,65, S. Plura³⁶, V. Prasad³⁵, F. Z. Qi¹, H. R. Qi⁶², M. Qi⁴³, S. Qian^1,59, W. B. Qian⁶⁵, C. F. Qiao⁶⁵, J. H. Qiao²⁰, J. J. Qin⁷⁴, J. L. Qin⁵⁶, L. Q. Qin¹⁴, L. Y. Qin^73,59, P. B. Qin⁷⁴, X. P. Qin^12,g, X. S. Qin⁵¹, Z. H. Qin^1,59, J. F. Qiu¹, Z. H. Qu⁷⁴, J. Rademacker⁶⁴, C. F. Redmer³⁶, A. Rivetti^76c, M. Rolo^76c, G. Rong^1,65, S. S. Rong^1,65, F. Rosini^29b,29c, Ch. Rosner¹⁹, M. Q. Ruan^1,59, N. Salone⁴⁵, A. Sarantsev^37,d, Y. Schelhaas³⁶, K. Schoenning⁷⁷, M. Scodeggio^30a, K. Y. Shan^12,g, W. Shan²⁵, X. Y. Shan^73,59, Z. J. Shang^39,k,l, J. F. Shangguan¹⁷, L. G. Shao^1,65, M. Shao^73,59, C. P. Shen^12,g, H. F. Shen^1,8, W. H. Shen⁶⁵, X. Y. Shen^1,65, B. A. Shi⁶⁵, H. Shi^73,59, J. L. Shi^12,g, J. Y. Shi¹, S. Y. Shi⁷⁴, X. Shi^1,59, H. L. Song^73,59, J. J. Song²⁰, T. Z. Song⁶⁰, W. M. Song³⁵, Y. J. Song^12,g, Y. X. Song^47,h,n, S. Sosio^76a,76c, S. Spataro^76a,76c, F. Stieler³⁶, S. S. Su⁴¹, Y. J. Su⁶⁵, G. B. Sun⁷⁸, G. X. Sun¹, H. Sun⁶⁵, H. K. Sun¹, J. F. Sun²⁰, K. Sun⁶², L. Sun⁷⁸, S. S. Sun^1,65, T. Sun^52,f, Y. C. Sun⁷⁸, Y. H. Sun³¹, Y. J. Sun^73,59, Y. Z. Sun¹, Z. Q. Sun^1,65, Z. T. Sun⁵¹, C. J. Tang⁵⁵, G. Y. Tang¹, J. Tang⁶⁰, J. J. Tang^73,59, L. F. Tang⁴⁰, Y. A. Tang⁷⁸, L. Y. Tao⁷⁴, M. Tat⁷¹, J. X. Teng^73,59, J. Y. Tian^73,59, W. H. Tian⁶⁰, Y. Tian³², Z. F. Tian⁷⁸, I. Uman^63b, B. Wang⁶⁰, B. Wang¹, Bo Wang^73,59, C. Wang^39,k,l, C. Wang²⁰, Cong Wang²³, D. Y. Wang^47,h, H. J. Wang^39,k,l, J. J. Wang⁷⁸, K. Wang^1,59, L. L. Wang¹, L. W. Wang³⁵, M. Wang⁵¹, M. Wang^73,59, N. Y. Wang⁶⁵, S. Wang^12,g, T. Wang^12,g, T. J. Wang⁴⁴, W. Wang⁶⁰, W. Wang⁷⁴, W. P. Wang^36,59,73,o, X. Wang^47,h, X. F. Wang^39,k,l, X. J. Wang⁴⁰, X. L. Wang^12,g, X. N. Wang¹, Y. Wang⁶², Y. D. Wang⁴⁶, Y. F. Wang^1,8,65, Y. H. Wang^39,k,l, Y. J. Wang^73,59, Y. L. Wang²⁰, Y. N. Wang⁷⁸, Y. Q. Wang¹, Yaqian Wang¹⁸, Yi Wang⁶², Yuan Wang^18,32, Z. Wang^1,59, Z. L. Wang², Z. L. Wang⁷⁴, Z. Q. Wang^12,g, Z. Y. Wang^1,65, D. H. Wei¹⁴, H. R. Wei⁴⁴, F. Weidner⁷⁰, S. P. Wen¹, Y. R. Wen⁴⁰, U. Wiedner³, G. Wilkinson⁷¹, M. Wolke⁷⁷, C. Wu⁴⁰, J. F. Wu^1,8, L. H. Wu¹, L. J. Wu²⁰, L. J. Wu^1,65, Lianjie Wu²⁰, S. G. Wu^1,65, S. M. Wu⁶⁵, X. Wu^12,g, X. H. Wu³⁵, Y. J. Wu³², Z. Wu^1,59, L. Xia^73,59, X. M. Xian⁴⁰, B. H. Xiang^1,65, D. Xiao^39,k,l, G. Y. Xiao⁴³, H. Xiao⁷⁴, Y. L. Xiao^12,g, Z. J. Xiao⁴², C. Xie⁴³, K. J. Xie^1,65, X. H. Xie^47,h, Y. Xie⁵¹, Y. G. Xie^1,59, Y. H. Xie⁶, Z. P. Xie^73,59, T. Y. Xing^1,65, C. F. Xu^1,65, C. J. Xu⁶⁰, G. F. Xu¹, H. Y. Xu^68,2, H. Y. Xu², M. Xu^73,59, Q. J. Xu¹⁷, Q. N. Xu³¹, T. D. Xu⁷⁴, W. Xu¹, W. L. Xu⁶⁸, X. P. Xu⁵⁶, Y. Xu⁴¹, Y. Xu^12,g, Y. C. Xu⁷⁹, Z. S. Xu⁶⁵, F. Yan^12,g, H. Y. Yan⁴⁰, L. Yan^12,g, W. B. Yan^73,59, W. C. Yan⁸², W. H. Yan⁶, W. P. Yan²⁰, X. Q. Yan^1,65, H. J. Yang^52,f, H. L. Yang³⁵, H. X. Yang¹, J. H. Yang⁴³, R. J. Yang²⁰, T. Yang¹, Y. Yang^12,g, Y. F. Yang⁴⁴, Y. H. Yang⁴³, Y. Q. Yang⁹, Y. X. Yang^1,65, Y. Z. Yang²⁰, M. Ye^1,59, M. H. Ye^8,a, Z. J. Ye^57,j, Junhao Yin⁴⁴, Z. Y. You⁶⁰, B. X. Yu^1,59,65, C. X. Yu⁴⁴, G. Yu¹³, J. S. Yu^26,i, L. Q. Yu^12,g, M. C. Yu⁴¹, T. Yu⁷⁴, X. D. Yu^47,h, Y. C. Yu⁸², C. Z. Yuan^1,65, H. Yuan^1,65, J. Yuan³⁵, J. Yuan⁴⁶, L. Yuan², S. C. Yuan^1,65, X. Q. Yuan¹, Y. Yuan^1,65, Z. Y. Yuan⁶⁰, C. X. Yue⁴⁰, Ying Yue²⁰, A. A. Zafar⁷⁵, S. H. Zeng⁶⁴, X. Zeng^12,g, Y. Zeng^26,i, Y. J. Zeng^1,65, Y. J. Zeng⁶⁰, X. Y. Zhai³⁵, Y. H. Zhan⁶⁰, A. Q. Zhang^1,65, B. L. Zhang^1,65, B. X. Zhang¹, D. H. Zhang⁴⁴, G. Y. Zhang²⁰, G. Y. Zhang^1,65, H. Zhang^73,59, H. Zhang⁸², H. C. Zhang^1,59,65, H. H. Zhang⁶⁰, H. Q. Zhang^1,59,65, H. R. Zhang^73,59, H. Y. Zhang^1,59, J. Zhang⁶⁰, J. Zhang⁸², J. J. Zhang⁵³, J. L. Zhang²¹, J. Q. Zhang⁴², J. S. Zhang^12,g, J. W. Zhang^1,59,65, J. X. Zhang^39,k,l, J. Y. Zhang¹, J. Z. Zhang^1,65, Jianyu Zhang⁶⁵, L. M. Zhang⁶², Lei Zhang⁴³, N. Zhang⁸², P. Zhang^1,8, Q. Zhang²⁰, Q. Y. Zhang³⁵, R. Y. Zhang^39,k,l, S. H. Zhang^1,65, Shulei Zhang^26,i, X. M. Zhang¹, X. Y. Zhang⁴¹, X. Y. Zhang⁵¹, Y. Zhang⁷⁴, Y. Zhang¹, Y. T. Zhang⁸², Y. H. Zhang^1,59, Y. M. Zhang⁴⁰, Y. P. Zhang^73,59, Z. D. Zhang¹, Z. H. Zhang¹, Z. L. Zhang⁵⁶, Z. L. Zhang³⁵, Z. X. Zhang²⁰, Z. Y. Zhang⁴⁴, Z. Y. Zhang⁷⁸, Z. Z. Zhang⁴⁶, Zh. Zh. Zhang²⁰, G. Zhao¹, J. Y. Zhao^1,65, J. Z. Zhao^1,59, L. Zhao^73,59, L. Zhao¹, M. G. Zhao⁴⁴, N. Zhao⁸⁰, R. P. Zhao⁶⁵, S. J. Zhao⁸², Y. B. Zhao^1,59, Y. L. Zhao⁵⁶, Y. X. Zhao^32,65, Z. G. Zhao^73,59, A. Zhemchugov^37,b, B. Zheng⁷⁴, B. M. Zheng³⁵, J. P. Zheng^1,59, W. J. Zheng^1,65, X. R. Zheng²⁰, Y. H. Zheng^65,p, B. Zhong⁴², C. Zhong²⁰, H. Zhou^36,51,o, J. Q. Zhou³⁵, J. Y. Zhou³⁵, S. Zhou⁶, X. Zhou⁷⁸, X. K. Zhou⁶, X. R. Zhou^73,59, X. Y. Zhou⁴⁰, Y. X. Zhou⁷⁹, Y. Z. Zhou^12,g, A. N. Zhu⁶⁵, J. Zhu⁴⁴, K. Zhu¹, K. J. Zhu^1,59,65, K. S. Zhu^12,g, L. Zhu³⁵, L. X. Zhu⁶⁵, S. H. Zhu⁷², T. J. Zhu^12,g, W. D. Zhu^12,g, W. D. Zhu⁴², W. J. Zhu¹, W. Z. Zhu²⁰, Y. C. Zhu^73,59, Z. A. Zhu^1,65, X. Y. Zhuang⁴⁴, J. H. Zou¹, and J. Zu^73,59 (BESIII Collaboration)

• ¹Institute of High Energy Physics, Beijing 100049, People’s Republic of China
• ²Beihang University, Beijing 100191, People’s Republic of China
• ³Bochum Ruhr-University, D-44780 Bochum, Germany
• ⁴Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia
• ⁵Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
• ⁶Central China Normal University, Wuhan 430079, People’s Republic of China
• ⁷Central South University, Changsha 410083, People’s Republic of China
• ⁸China Center of Advanced Science and Technology, Beijing 100190, People’s Republic of China
• ⁹China University of Geosciences, Wuhan 430074, People’s Republic of China
• ¹⁰Chung-Ang University, Seoul, 06974, Republic of Korea
• ¹¹COMSATS University Islamabad, Lahore Campus, Defence Road, Off Raiwind Road, 54000 Lahore, Pakistan
• ¹²Fudan University, Shanghai 200433, People’s Republic of China
• ¹³GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany
• ¹⁴Guangxi Normal University, Guilin 541004, People’s Republic of China
• ¹⁵Guangxi University, Nanning 530004, People’s Republic of China
• ¹⁶Guangxi University of Science and Technology, Liuzhou 545006, People’s Republic of China
• ¹⁷Hangzhou Normal University, Hangzhou 310036, People’s Republic of China
• ¹⁸Hebei University, Baoding 071002, People’s Republic of China
• ¹⁹Helmholtz Institute Mainz, Staudinger Weg 18, D-55099 Mainz, Germany
• ²⁰Henan Normal University, Xinxiang 453007, People’s Republic of China
• ²¹Henan University, Kaifeng 475004, People’s Republic of China
• ²²Henan University of Science and Technology, Luoyang 471003, People’s Republic of China
• ²³Henan University of Technology, Zhengzhou 450001, People’s Republic of China
• ²⁴Huangshan College, Huangshan 245000, People’s Republic of China
• ²⁵Hunan Normal University, Changsha 410081, People’s Republic of China
• ²⁶Hunan University, Changsha 410082, People’s Republic of China
• ²⁷Indian Institute of Technology Madras, Chennai 600036, India
• ²⁸Indiana University, Bloomington, Indiana 47405, USA
• ^29aINFN Laboratori Nazionali di Frascati, INFN Laboratori Nazionali di Frascati, I-00044, Frascati, Italy
• ^29bINFN Sezione di Perugia, I-06100, Perugia, Italy
• ^29cUniversity of Perugia, I-06100, Perugia, Italy
• ^30aINFN Sezione di Ferrara, INFN Sezione di Ferrara, I-44122, Ferrara, Italy
• ^30bUniversity of Ferrara, I-44122, Ferrara, Italy
• ³¹Inner Mongolia University, Hohhot 010021, People’s Republic of China
• ³²Institute of Modern Physics, Lanzhou 730000, People’s Republic of China
• ³³Institute of Physics and Technology, Mongolian Academy of Sciences, Peace Avenue 54B, Ulaanbaatar 13330, Mongolia
• ³⁴Instituto de Alta Investigación, Universidad de Tarapacá, Casilla 7D, Arica 1000000, Chile
• ³⁵Jilin University, Changchun 130012, People’s Republic of China
• ³⁶Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
• ³⁷Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
• ³⁸Justus-Liebig-Universitaet Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
• ³⁹Lanzhou University, Lanzhou 730000, People’s Republic of China
• ⁴⁰Liaoning Normal University, Dalian 116029, People’s Republic of China
• ⁴¹Liaoning University, Shenyang 110036, People’s Republic of China
• ⁴²Nanjing Normal University, Nanjing 210023, People’s Republic of China
• ⁴³Nanjing University, Nanjing 210093, People’s Republic of China
• ⁴⁴Nankai University, Tianjin 300071, People’s Republic of China
• ⁴⁵National Centre for Nuclear Research, Warsaw 02-093, Poland
• ⁴⁶North China Electric Power University, Beijing 102206, People’s Republic of China
• ⁴⁷Peking University, Beijing 100871, People’s Republic of China
• ⁴⁸Qufu Normal University, Qufu 273165, People’s Republic of China
• ⁴⁹Renmin University of China, Beijing 100872, People’s Republic of China
• ⁵⁰Shandong Normal University, Jinan 250014, People’s Republic of China
• ⁵¹Shandong University, Jinan 250100, People’s Republic of China
• ⁵²Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China
• ⁵³Shanxi Normal University, Linfen 041004, People’s Republic of China
• ⁵⁴Shanxi University, Taiyuan 030006, People’s Republic of China
• ⁵⁵Sichuan University, Chengdu 610064, People’s Republic of China
• ⁵⁶Soochow University, Suzhou 215006, People’s Republic of China
• ⁵⁷South China Normal University, Guangzhou 510006, People’s Republic of China
• ⁵⁸Southeast University, Nanjing 211100, People’s Republic of China
• ⁵⁹State Key Laboratory of Particle Detection and Electronics, Beijing 100049, Hefei 230026, People’s Republic of China
• ⁶⁰Sun Yat-Sen University, Guangzhou 510275, People’s Republic of China
• ⁶¹Suranaree University of Technology, University Avenue 111, Nakhon Ratchasima 30000, Thailand
• ⁶²Tsinghua University, Beijing 100084, People’s Republic of China
• ^63aTurkish Accelerator Center Particle Factory Group, Istinye University, 34010, Istanbul, Turkey
• ^63bNear East University, Nicosia, North Cyprus, 99138, Mersin 10, Turkey
• ⁶⁴University of Bristol, H H Wills Physics Laboratory, Tyndall Avenue, Bristol, BS8 1TL, United Kingdom
• ⁶⁵University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
• ⁶⁶University of Groningen, NL-9747 AA Groningen, The Netherlands
• ⁶⁷University of Hawaii, Honolulu, Hawaii 96822, USA
• ⁶⁸University of Jinan, Jinan 250022, People’s Republic of China
• ⁶⁹University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
• ⁷⁰University of Muenster, Wilhelm-Klemm-Strasse 9, 48149 Muenster, Germany
• ⁷¹University of Oxford, Keble Road, Oxford OX13RH, United Kingdom
• ⁷²University of Science and Technology Liaoning, Anshan 114051, People’s Republic of China
• ⁷³University of Science and Technology of China, Hefei 230026, People’s Republic of China
• ⁷⁴University of South China, Hengyang 421001, People’s Republic of China
• ⁷⁵University of the Punjab, Lahore-54590, Pakistan
• ^76aUniversity of Turin and INFN, University of Turin, I-10125, Turin, Italy
• ^76bUniversity of Eastern Piedmont, I-15121, Alessandria, Italy
• ^76cINFN, I-10125, Turin, Italy
• ⁷⁷Uppsala University, Box 516, SE-75120 Uppsala, Sweden
• ⁷⁸Wuhan University, Wuhan 430072, People’s Republic of China
• ⁷⁹Yantai University, Yantai 264005, People’s Republic of China
• ⁸⁰Yunnan University, Kunming 650500, People’s Republic of China
• ⁸¹Zhejiang University, Hangzhou 310027, People’s Republic of China
• ⁸²Zhengzhou University, Zhengzhou 450001, People’s Republic of China

• ^*Full author list given at the end of the Letter.
• ^aDeceased.
• ^bAlso at the Moscow Institute of Physics and Technology, Moscow 141700, Russia.
• ^cAlso at the Novosibirsk State University, Novosibirsk, 630090, Russia.
• ^dAlso at the NRC “Kurchatov Institute,” PNPI, 188300, Gatchina, Russia.
• ^eAlso at Goethe University Frankfurt, 60323 Frankfurt am Main, Germany.
• ^fAlso at Key Laboratory for Particle Physics, Astrophysics and Cosmology, Ministry of Education; Shanghai Key Laboratory for Particle Physics and Cosmology; Institute of Nuclear and Particle Physics, Shanghai 200240, People’s Republic of China.
• ^gAlso at Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443, People’s Republic of China.
• ^hAlso at State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, People’s Republic of China.
• ⁱAlso at School of Physics and Electronics, Hunan University, Changsha 410082, China.
• ^jAlso at Guangdong Provincial Key Laboratory of Nuclear Science, Institute of Quantum Matter, South China Normal University, Guangzhou 510006, China.
• ^kAlso at MOE Frontiers Science Center for Rare Isotopes, Lanzhou University, Lanzhou 730000, People’s Republic of China.
• ^lAlso at Lanzhou Center for Theoretical Physics, Key Laboratory of Theoretical Physics of Gansu Province, Key Laboratory. of Quantum Theory and Applications of MoE, Gansu Provincial Research Center for Basic Disciplines of Quantum Physics, Lanzhou University, Lanzhou 730000, People’s Republic of China.
• ^mAlso at the Department of Mathematical Sciences, IBA, Karachi 75270, Pakistan.
• ⁿAlso at Ecole Polytechnique Federale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
• ^oAlso at Helmholtz Institute Mainz, Staudinger Weg 18, D-55099 Mainz, Germany.
• ^pAlso at Hangzhou Institute for Advanced Study,University of Chinese Academy of Sciences, Hangzhou 310024, China.