核物理中的π介子

原子核物理评论 , 2003, 20(1): 1-10. doi: 10.3969/j.issn.1007-4627.2003.01.001

核物理中的π介子

李磊 ^1, , 张小兵 ^2, , 谭玉红 ^3, , 宁平治 ^4,

1.南开大学物理系,天津,300071

2.南开大学物理系,天津,300071

3.南开大学物理系,天津,300071

4.南开大学物理系,天津,300071

基金项目: 高等学校博士学科点专项科研项目(20010055012) 国家自然科学基金(10275037)

关键词： π介子的结构和性质 , π-核相互作用 , 核内的π介子 , 核物质中的π介子

Pions in Nuclear Physics

在强子层次上,原子核或强子物质的基本组元是核子和介子. 弄清这些强子的结构,并由基本原理出发研究它们的性质,是当代核物理的重要课题. 在各种介子中,π介子是最轻且最重要的介子. 关于自由空间中π介子的结构与性质、核介质内π介子的性质、π-核子相互作用与π-核相互作用等问题,始终受到相当多的关注. π介子在核物理中的作用直接联系着手征对称性,汤川秀树关于π介子的最初概念已经大大发展了. 有清楚的实验证据表明,核内存在π介子的集体模式,这种集体模式与以前观测到的所有核集体运动模式截然不同. 拟对π-核物理的研究现状及值得进一步研究的主要问题予以简要评述.

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核物理中的π介子

Pions in Nuclear Physics

参考文献