Hyperon-nucleon interactions are important to understand quantum chromodynamics and so-called "hyperon puzzle" of neutron star, but limited by the availability and short-lifetime of hyperon beams, the progress of relevant research is very slow. A novel method is used to study hyperon-nucleon interactions based on hyperons produced in the decays of 10 billion $J/ψ$ events collected with the BESIII detector at the BEPCII storage ring, and the target material is beam pipe. The reactions $Ξ^{0}n\rightarrowΞ^{-}p$ and $ΛN\rightarrowΣ^+X$ have been observed and measured at BESIII. This is the first study of hyperon-nucleon interactions in electron-positron collisions and opens up a new direction for such research.
Institute of High Energy Physics（高能物理研究所）；University of Chinese Academy of Sciences（中国科学院大学）；China Center of Advanced Science and Technology（中国高等科学技术中心）
School of Physical Science and Technology, Lanzhou University（兰州大学物理科学与技术学院）；Frontiers Science Center for Rare Isotopes, Lanzhou University（兰州大学稀有同位素前沿科学中心）
Tests of CP symmetry in entangled hyperon anti-hyperon pairs at BESIII
Institute of High Energy Physics, Chinese Academy of Sciences（中国科学院高能物理研究所）；University of Chinese Academy of Sciences（中国科学院大学）；Uppsala University（乌普萨拉大学）；National Centre for Nuclear Research（波兰国家核子研究中心）；INFN Sezione di Perugia（意大利国家核物理研究院佩鲁加分部）；Università di Perugia（佩鲁贾大学）；Lanzhou University（兰州大学）；Institute of Physics, Henan Academy of Sciences（河南省科学院物理研究所）
Experimental Advances on Light Baryon Spectroscopy at BESIII Experiment
Lanzhou University（兰州大学）；Institute of High Energy Physics（高能物理研究所）；University of Chinese Academy of Sciences（中国科学院大学）；Institute of Physics, Henan Academy of Sciences（河南省科学院物理研究所）
Asymmetries in the production of lambda zero, cascade minus, and omega minus hyperons in 500 GeV/c pi minus-Nucleon Interactions
利用费米实验室固定靶实验E791的数据，我们测量了500 GeV/c π-核子相互作用中λ零、级联负和Ω负超子的粒子-反粒子产生不对称性。在-0.12 GE x_F LE 0.12和0 GE pt^2 LE 4（GeV/c）^2的范围内，测量的非对称性是费曼-x（x_F）和pt^2的函数。我们发现，即使在x_F = 0时，也存在显著的不对称性。我们还观察到领导粒子型的不对称性，定性与理论预测一致。
Unraveling the Hyperon Puzzle in Neutron Stars via Novel, High-Precision Hyperon Factories
Institute of High Energy Physics, Chinese Academy of Sciences（中国科学院高能物理研究所）；University of Chinese Academy of Sciences（中国科学院大学）；School of Physics and Astronomy, Tel Aviv University（特拉维夫大学物理与天文学学院）
