Strong and Weak CP Tests in Sequential Decays of Polarized Σ0 Hyperons

作     者：M. Ablikim M. N. Achasov P. Adlarson O. Afedulidis X. C. Ai R. Aliberti A. Amoroso Q. An Y. Bai O. Bakina I. Balossino Y. Ban H.-R. Bao V. Batozskaya K. Begzsuren N. Berger M. Berlowski M. Bertani D. Bettoni F. Bianchi E. Bianco A. Bortone I. Boyko R. A. Briere A. Brueggemann H. Cai X. Cai A. Calcaterra G. F. Cao N. Cao S. A. Cetin J. F. Chang G. R. Che G. Chelkov C. Chen C. H. Chen Chao Chen G. Chen H. S. Chen H. Y. Chen M. L. Chen S. J. Chen S. L. Chen S. M. Chen T. Chen X. R. Chen X. T. Chen Y. B. Chen Y. Q. Chen Z. J. Chen Z. Y. Chen S. K. Choi G. Cibinetto F. Cossio J. J. Cui H. L. Dai J. P. Dai A. Dbeyssi R. E. de Boer D. Dedovich C. Q. Deng Z. Y. Deng A. Denig I. Denysenko M. Destefanis F. De Mori B. Ding X. X. Ding Y. Ding J. Dong L. Y. Dong M. Y. Dong X. Dong M. C. Du S. X. Du Y. Y. Duan Z. H. Duan P. Egorov Y. H. Fan J. Fang S. S. Fang W. X. Fang Y. Fang Y. Q. Fang R. Farinelli L. Fava F. Feldbauer G. Felici C. Q. Feng J. H. Feng Y. T. Feng M. Fritsch C. D. Fu J. L. Fu Y. W. Fu H. Gao X. B. Gao Y. N. Gao Yang Gao S. Garbolino I. Garzia L. Ge P. T. Ge Z. W. Ge C. Geng E. M. Gersabeck A. Gilman K. Goetzen L. Gong W. X. Gong W. Gradl S. Gramigna M. Greco M. H. Gu Y. T. Gu C. Y. Guan A. Q. Guo L. B. Guo M. J. Guo R. P. Guo Y. P. Guo A. Guskov J. Gutierrez K. L. Han T. T. Han F. Hanisch X. Q. Hao F. A. Harris K. K. He K. L. He F. H. Heinsius C. H. Heinz Y. K. Heng C. Herold T. Holtmann P. C. Hong G. Y. Hou X. T. Hou Y. R. Hou Z. L. Hou B. Y. Hu H. M. Hu J. F. Hu S. L. Hu T. Hu Y. Hu Z. M. Hu G. S. Huang K. X. Huang L. Q. Huang X. T. Huang Y. P. Huang Y. S. Huang T. Hussain F. Hölzken N. Hüsken N. in der Wiesche J. Jackson S. Janchiv J. H. Jeong Q. Ji Q. P. Ji W. Ji X. B. Ji X. L. Ji Y. Y. Ji X. Q. Jia Z. K. Jia D. Jiang H. B. Jiang P. C. Jiang S. S. Jiang T. J. Jiang X. S. Jiang Y. Jiang J. B. Jiao J. K. Jiao Z. Jiao S. Jin Y. Jin M. Q. Jing X. M. Jing T. Johansson S. Kabana N. Kalantar-Nayestanaki X. L. Kang X. S. Kang M. Kavatsyuk B. C. Ke V. Khachatryan A. Khoukaz R. Kiuchi O. B. Kolcu B. Kopf M. Kuessner X. Kui N. Kumar A. Kupsc W. Kühn J. J. Lane L. Lavezzi T. T. Lei Z. H. Lei M. Lellmann T. Lenz C. Li C. H. Li Cheng Li D. M. Li F. Li G. Li H. B. Li H. J. Li H. N. Li Hui Li J. R. Li J. S. Li K. Li K. L. Li L. J. Li L. K. Li Lei Li M. H. Li P. R. Li Q. M. Li Q. X. Li R. Li S. X. Li T. Li W. D. Li W. G. Li X. Li X. H. Li X. L. Li X. Y. Li X. Z. Li Y. G. Li Z. J. Li Z. Y. Li C. Liang H. Liang Y. F. Liang Y. T. Liang G. R. Liao Y. P. Liao J. Libby A. Limphirat C. C. Lin D. X. Lin T. Lin B. J. Liu B. X. Liu C. Liu C. X. Liu F. Liu F. H. Liu Feng Liu G. M. Liu H. Liu H. B. Liu H. H. Liu H. M. Liu Huihui Liu J. B. Liu J. Y. Liu K. Liu K. Y. Liu Ke Liu L. Liu L. C. Liu Lu Liu M. H. Liu P. L. Liu Q. Liu S. B. Liu T. Liu W. K. Liu W. M. Liu X. Liu Y. Liu Y. B. Liu Z. A. Liu Z. D. Liu Z. Q. Liu X. C. Lou F. X. Lu H. J. Lu J. G. Lu X. L. Lu Y. Lu Y. P. Lu Z. H. Lu C. L. Luo J. R. Luo M. X. Luo T. Luo X. L. Luo X. R. Lyu Y. F. Lyu F. C. Ma H. Ma H. L. Ma J. L. Ma L. L. Ma L. R. Ma M. M. Ma Q. M. Ma R. Q. Ma T. Ma X. T. Ma X. Y. Ma Y. Ma Y. M. Ma F. E. Maas M. Maggiora S. Malde Q. A. Malik Y. J. Mao Z. P. Mao S. Marcello Z. X. Meng J. G. Messchendorp G. Mezzadri H. Miao T. J. Min R. E. Mitchell X. H. Mo B. Moses N. Yu. Muchnoi J. Muskalla Y. Nefedov F. Nerling L. S. Nie I. B. Nikolaev Z. Ning S. Nisar Q. L. Niu W. D. Niu Y. Niu S. L. Olsen Q. Ouyang S. Pacetti X. Pan Y. Pan A. Pathak Y. P. Pei M. Pelizaeus H. P. Peng Y. Y. Peng K. Peters J. L. Ping R. G. Ping S. Plura V. Prasad F. Z. Qi H. Qi H. R. Qi M. Qi T. Y. Qi S. Qian W. B. Qian C. F. Qiao X. K. Qiao J. J. Qin L. Q. Qin L. Y. Qin X. P. Qin X. S. Qin Z. H. Qin J. F. Qiu Z. H. Qu C. F. Redmer K. J. Ren A. Rivetti M. Rolo G. Rong Ch. Rosner S. N. Ruan N. Salone A. Sarantsev Y. Schelhaas K. Schoenning M. Scodeggio K. Y. Shan W. Shan X. Y. Shan Z. J. Shang J. F. Shangguan L. G. Shao M. Shao C. P. Shen H. F. Shen W. H. Shen X. Y. Shen B. A. Shi H. Shi H. C. Shi J. L. Shi J. Y. Shi Q. Q. Shi S. Y. Shi X. Shi J. J. Song T. Z. Song W. M. Song Y. J. Song Y. X. Song S. Sosio S. Spataro F. Stieler S. S. Su Y. J. Su G. B. Sun G. X. Sun H. Sun H. K. Sun J. F. Sun K. Sun L. Sun S. S. Sun T. Sun W. Y. Sun Y. Sun Y. J. Sun Y. Z. Sun Z. Q. Sun Z. T. Sun C. J. Tang G. Y. Tang J. Tang M. Tang Y. A. Tang L. Y. Tao Q. T. Tao M. Tat J. X. Teng V. Thoren W. H. Tian Y. Tian Z. F. Tian I. Uman Y. Wan S. J. Wang B. Wang B. L. Wang Bo Wang D. Y. Wang F. Wang H. J. Wang J. J. Wang J. P. Wang K. Wang L. L. Wang M. Wang N. Y. Wang S. Wang T. Wang T. J. Wang W. Wang W. P. Wang X. Wang X. F. Wang X. J. Wang X. L. Wang X. N. Wang Y. Wang Y. D. Wang Y. F. Wang Y. L. Wang Y. N. Wang Y. Q. Wang Yaqian Wang Yi Wang Z. Wang Z. L. Wang Z. Y. Wang Ziyi Wang D. H. Wei F. Weidner S. P. Wen Y. R. Wen U. Wiedner G. Wilkinson M. Wolke L. Wollenberg C. Wu J. F. Wu L. H. Wu L. J. Wu X. Wu X. H. Wu Y. Wu Y. H. Wu Y. J. Wu Z. Wu L. Xia X. M. Xian B. H. Xiang T. Xiang D. Xiao G. Y. Xiao S. Y. Xiao Y. L. Xiao Z. J. Xiao C. Xie X. H. Xie Y. Xie Y. G. Xie Y. H. Xie Z. P. Xie T. Y. Xing C. F. Xu C. J. Xu G. F. Xu H. Y. Xu M. Xu Q. J. Xu Q. N. Xu W. Xu W. L. Xu X. P. Xu Y. Xu Y. C. Xu Z. S. Xu F. Yan L. Yan W. B. Yan W. C. Yan X. Q. Yan H. J. Yang H. L. Yang H. X. Yang T. Yang Y. Yang Y. F. Yang Y. X. Yang Z. W. Yang Z. P. Yao M. Ye M. H. Ye J. H. Yin Junhao Yin Z. Y. You B. X. Yu C. X. Yu G. Yu J. S. Yu M. C. Yu T. Yu X. D. Yu Y. C. Yu C. Z. Yuan J. Yuan L. Yuan S. C. Yuan Y. Yuan Z. Y. Yuan C. X. Yue A. A. Zafar F. R. Zeng S. H. Zeng X. Zeng Y. Zeng Y. J. Zeng X. Y. Zhai Y. C. Zhai Y. H. Zhan A. Q. Zhang B. L. Zhang B. X. Zhang D. H. Zhang G. Y. Zhang H. Zhang H. C. Zhang H. H. Zhang H. Q. Zhang H. R. Zhang H. Y. Zhang J. Zhang J. J. Zhang J. L. Zhang J. Q. Zhang J. S. Zhang J. W. Zhang J. X. Zhang J. Y. Zhang J. Z. Zhang Jianyu Zhang L. M. Zhang Lei Zhang P. Zhang Q. Y. Zhang R. Y. Zhang S. H. Zhang Shulei Zhang X. D. Zhang X. M. Zhang X. Y. Zhang Y. Zhang Y. T. Zhang Y. H. Zhang Y. M. Zhang Yan Zhang Z. D. Zhang Z. H. Zhang Z. L. Zhang Z. Y. Zhang Z. Z. Zhang G. Zhao J. Y. Zhao J. Z. Zhao L. Zhao Lei Zhao M. G. Zhao N. Zhao R. P. Zhao S. J. Zhao Y. B. Zhao Y. X. Zhao Z. G. Zhao A. Zhemchugov B. Zheng B. M. Zheng J. P. Zheng W. J. Zheng Y. H. Zheng B. Zhong X. Zhong H. Zhou J. Y. Zhou L. P. Zhou S. Zhou X. Zhou X. K. Zhou X. R. Zhou X. Y. Zhou Y. Z. Zhou Z. C. Zhou A. N. Zhu J. Zhu K. Zhu K. J. Zhu K. S. Zhu L. Zhu L. X. Zhu S. H. Zhu T. J. Zhu W. D. Zhu Y. C. Zhu Z. A. Zhu J. H. Zou J. Zu 

作者机构：Institute of High Energy Physics Beijing 100049 People’s Republic of China Budker Institute of Nuclear Physics SB RAS (BINP) Novosibirsk 630090 Russia Uppsala University Box 516 SE-75120 Uppsala Sweden Bochum Ruhr-University D-44780 Bochum Germany Zhengzhou University Zhengzhou 450001 People’s Republic of China Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45 D-55099 Mainz Germany University of Turin I-10125 Turin Italy INFN I-10125 Turin Italy University of Science and Technology of China Hefei 230026 People’s Republic of China State Key Laboratory of Particle Detection and Electronics Beijing 100049 Hefei 230026 People’s Republic of China Southeast University Nanjing 211100 People’s Republic of China Joint Institute for Nuclear Research 141980 Dubna Moscow region Russia INFN Sezione di Ferrara I-44122 Ferrara Italy Peking University Beijing 100871 People’s Republic of China University of Chinese Academy of Sciences Beijing 100049 People’s Republic of China National Centre for Nuclear Research Warsaw 02-093 Poland Institute of Physics and Technology Peace Avenue 54B Ulaanbaatar 13330 Mongolia INFN Laboratori Nazionali di Frascati I-00044 Frascati Italy Carnegie Mellon University Pittsburgh Pennsylvania 15213 USA University of Muenster Wilhelm-Klemm-Strasse 9 48149 Muenster Germany Wuhan University Wuhan 430072 People’s Republic of China Turkish Accelerator Center Particle Factory Group Istinye University 34010 Istanbul Turkey Nankai University Tianjin 300071 People’s Republic of China China University of Geosciences Wuhan 430074 People’s Republic of China Soochow University Suzhou 215006 People’s Republic of China Henan University Kaifeng 475004 People’s Republic of China Nanjing University Nanjing 210093 People’s Republic of China North China Electric Power University Beijing 102206 People’s Republic of China Tsinghua University Beijing 100084 People’s Republic of China Institute of Modern Physics Lanzhou 730000 People’s Republic of China Jilin University Changchun 130012 People’s Republic of China Hunan University Changsha 410082 People’s Republic of China Chung-Ang University Seoul 06974 Republic of Korea Shandong University Jinan 250100 People’s Republic of China Yunnan University Kunming 650500 People’s Republic of China Helmholtz Institute Mainz Staudinger Weg 18 D-55099 Mainz Germany University of South China Hengyang 421001 People’s Republic of China University of Jinan Jinan 250022 People’s Republic of China Liaoning University Shenyang 110036 People’s Republic of China University of Eastern Piedmont I-15121 Alessandria Italy Sun Yat-Sen University Guangzhou 510275 People’s Republic of China Nanjing Normal University Nanjing 210023 People’s Republic of China University of Ferrara I-44122 Ferrara Italy Henan Normal University Xinxiang 453007 People’s Republic of China University of Manchester Oxford Road Manchester M13 9PL United Kingdom University of Oxford Keble Road Oxford OX13RH United Kingdom GSI Helmholtzcentre for Heavy Ion Research GmbH D-64291 Darmstadt Germany Guangxi University Nanning 530004 People’s Republic of China Shandong Normal University Jinan 250014 People’s Republic of China Fudan University Shanghai 200433 People’s Republic of China Indiana University Bloomington Indiana 47405 USA University of Hawaii Honolulu Hawaii 96822 USA Suranaree University of Technology University Avenue 111 Nakhon Ratchasima 30000 Thailand South China Normal University Guangzhou 510006 People’s Republic of China University of the Punjab Lahore-54590 Pakistan Liaoning Normal University Dalian 116029 People’s Republic of China Hangzhou Normal University Hangzhou 310036 People’s Republic of China Huangshan College Huangshan 245000 People’s Republic of China Instituto de Alta Investigación Universidad de Tarapacá Casilla 7D Arica 1000000 Chile University of Groningen NL-9747 AA Groningen The Netherlands Indian Institute of Technology Madras Chennai 600036 India Justus-Liebig-Universitaet Giessen II. Physikalisches Institut Heinrich-Buff-Ring 16 D-35392 Giessen Germany Renmin University of China Beijing 100872 People’s Republic of China Lanzhou University Lanzhou 730000 People’s Republic of China Hebei University Baoding 071002 People’s Republic of China Sichuan University Chengdu 610064 People’s Republic of China Guangxi Normal University Guilin 541004 People’s Republic of China Shanxi University Taiyuan 030006 People’s Republic of China Central China Normal University Wuhan 430079 People’s Republic of China Henan University of Science and Technology Luoyang 471003 People’s Republic of China Henan University of Technology Zhengzhou 450001 People’s Republic of China Central South University Changsha 410083 People’s Republic of China Zhejiang University Hangzhou 310027 People’s Republic of China COMSATS University Islamabad Lahore Campus Defence Road Off Raiwind Road 54000 Lahore Pakistan INFN Sezione di Perugia I-06100 Perugia Italy University of Perugia I-06100 Perugia Italy Hunan Normal University Changsha 410081 People’s Republic of China China Center of Advanced Science and Technology Beijing 100190 People’s Republic of China Shanghai Jiao Tong University Shanghai 200240 People’s Republic of China Near East University Nicosia North Cyprus 99138 Mersin 10 Turkey Beihang University Beijing 100191 People’s Republic of China Inner Mongolia University Hohhot 010021 People’s Republic of China Yantai University Yantai 264005 People’s Republic of China H. H. Wills Physics Laboratory University of Bristol Tyndall Avenue Bristol BS8 1TL United Kingdom Shanxi Normal University Linfen 041004 People’s Republic of China University of Science and Technology Liaoning Anshan 114051 People’s Republic of China 

出 版 物：《Physical Review Letters》 (Phys Rev Lett)

年 卷 期：2024年第133卷第10期

页      面：101902页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：National Science and Technology fund of Mongolia BEPCII Shanghai Key Laboratory for Particle Physics and Cosmology, SKLPPC Knut och Alice Wallenbergs Stiftelse Instituto Nazionale di Fisica Nucleare, INFN Institute of Nuclear and Particle Physics, Shanghai Jiao Tong University, INPAC Chinese Academy of Sciences, CAS Swedish Foundation for International Cooperation in Research and Higher Education, STINT National Science Research and Innovation Fund Vetenskapsrådet, VR National Research Foundation of Korea, NRF, (NRF-2022R1A2C1092335) National Research Foundation of Korea, NRF U.S. Department of Energy, USDOE, (DE-FG02-05ER41374) U.S. Department of Energy, USDOE China Postdoctoral Science Foundation, (2024M753040, GZC20241608) China Postdoctoral Science Foundation Ministry of Development of Turkey, (DPT2006K-120470) National Natural Science Foundation of China, NSFC, (12035009, 12342502, 12192265, 12025502, 12061131003, 12235017, 12192264, 12035013, 11935015, 12192263, 12225509, 11735014, 12192261, 11935016, 12165022, 12361141819, 11635010, 11935018, 12221005, 12192260, 12192262) National Natural Science Foundation of China, NSFC National Key Research and Development Program of China, NKRDPC, (2020YFA0406300, 2020YFA0406400, 2023YFA1606000) National Key Research and Development Program of China, NKRDPC Deutsche Forschungsgemeinschaft, DFG, (GRK 2149, 455635585, FOR5327) Deutsche Forschungsgemeinschaft, DFG Program Management Unit for Human Resources and Institutional Development, Research and Innovation of Thailand, (B16F640076) Narodowe Centrum Nauki, NCN, (2019/35/O/ST2/02907) Narodowe Centrum Nauki, NCN CAS Center for Excellence in Particle Physics, CCEPP, (U1832207) CAS Center for Excellence in Particle Physics, CCEPP Yunnan Fundamental Research Project, (202301AT070162) 

主　　题：Electroweak interaction Strong interaction Hyperons CP symmetry 

摘      要：The J/ψ, ψ(3686)→Σ0Σ¯0 processes and subsequent decays are studied using the world’s largest J/ψ and ψ(3686) data samples collected with the BESIII detector. The parity-violating decay parameters of the decays Σ0→Λγ and Σ¯0→Λ¯γ, αΣ0=−0.0017±0.0021±0.0018 and α¯Σ0=0.0021±0.0020±0.0022, are measured for the first time. The strong CP symmetry is tested in the decays of the Σ0 hyperons for the first time by measuring the asymmetry ACPΣ=αΣ0+α¯Σ0=(0.4±2.9±1.3)×10−3. The weak CP test is performed in the subsequent decays of their daughter particles Λ and Λ¯. Also for the first time, the transverse polarizations of the Σ0 hyperons in J/ψ and ψ(3686) decays are observed with opposite directions, and the ratios between the S-wave and D-wave contributions of the J/ψ, ψ(3686)→Σ0Σ¯0 decays are obtained. These results are crucial to understand the decay dynamics of the charmonium states and the production mechanism of the Σ0−Σ¯0 pairs.