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J/ψ衰变中轻强子物理探秘
Exploring light hadron physics in J/ψ decays
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摘要: 北京谱仪BESⅢ实验利用所采集的100亿J/ψ事例，为研究轻强子物理，探究物质微观结构和强相互作用提供了重要平台。文章对BESⅢ实验中轻强子物理的研究成果进行了简要回顾。除了在轻奇特态寻找方面取得的重要进展，例如发现X (2370)和η1(1855)等新粒子，BESⅢ实验还通过J/ψ衰变中的超子—反超子对的量子纠缠进行了超子极化和CP破坏的研究，给出了目前最精确的检验结果，为理解宇宙中物质—反物质不对称性提供了新视角。此外，还取得了一系列关于轻介子衰变的重要成果，包括观察到新的衰变模式和新的衰变机制等。Abstract: The unprecedented sample of 10 billion J/ψ events collected with the BESⅢ detector has provided a unique opportunity to study the fundamental properties of matter and the strong interactions between quarks. In addition to the significant progress in the observation of glueball-like particle X(2370) and the hybrid candidate η1(1855), investigations on the polarization of hyperons and the search for CP violation have been performed with the help of the quantum correlation of hyperon-anti-hyperon pairs in J/ψ decays, which is crucial for understanding matter-antimatter asymmetry in the universe. Additionally, a series of important observations on the light meson decays, including new decay modes and new decay mechanisms, have also been accomplished. We will briefly review these achievements in light hadron physics performed at the BESⅢ facility.
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Key words:
- light hadron /
- BESⅢ detector /
- charmonium decays /
- QCD exotic state .
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