Production and decay of polarized hyperon-antihyperon pairs  

作　　者：Karin Schonning Varvara Batozskaya Patrik Adlarson 周小蓉 Karin Schonning;Varvara Batozskaya;Patrik Adlarson;Xiaorong Zhou(Department of Physics and Astronomy Uppsala University Uppsala,Sweden;Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;National Centre for Nuclear Research,Warsaw,Poland;University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]Department of Physics and Astronomy Uppsala University Uppsala,Sweden [2]Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China [3]National Centre for Nuclear Research,Warsaw,Poland [4]University of Science and Technology of China,Hefei 230026,China

出　　处：《Chinese Physics C》2023年第5期29-48,共20页中国物理C（英文版）

基　　金：the Knut and Alice Wallenberg Foundation (2016.0157,2021.0299)(Sweden);the Swedish Research Council (2019-04594,2021-04567)(Sweden);The Swedish Foundation for International Cooperation in Research and Higher Education (CH2018-7756);the Olle Engkvist Foundation (200-0605)(Sweden);Lundstrom-Aman Foundation (Sweden);the National Natural Science Foundation of China (11935018,12122509);the CAS President’s International Fellowship Initiative,(2021PM0014)(China);Polish National Science Centre (2019/35/O/ST2/02907)(Poland);the Double First-Class university project foundation of USTC (China)

摘　　要：Polarized hyperon-antihyperon pairs shed light on various unresolved puzzles in contemporary physics:How the strong interaction confines quarks into hadrons, how accurately the Standard Model describes microcosmos and even why our universe consists of so much more matter than antimatter. Thanks to their weak, parity violating decays, hyperons reveal their spin properties. This can be exploited e.g. the decomposition of the electromagnetic structure of hyperons, precision tests of flavour symmetry and searches for CP violation. At the BESⅢ experiment at BEPC-Ⅱ, Beijing, China, hyperon-antihyperon pairs can be produced in abundance. Recently collected large data samples have triggered the development of new methods that provide unprecedented precision and a plethora of new results have emerged. When applied at future high-intensity facilities like PANDA and STCF, precision physics will be taken to a new level which can contribute to the solution to the aforementioned puzzles.

关 键 词：HYPERON POLARIZATION CP violation form factors 

分 类 号：O572.2[理学—粒子物理与原子核物理]