Indications of partial chiral symmetry restoration from pionic atoms
Indications of partial chiral symmetry restoration from pionic atoms
复制标题
介子原子部分手性对称性恢复的迹象
DOI：
10.1016/s0370-2693(01)01326-0
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发表时间：
2001
影响因子：
4.4
通讯作者：
Erich Friedman
中科院分区：
文献类型：
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作者：
Erich Friedman
利用Weise最近提出的由介子衰变常数的密度依赖导致的密度依赖的等矢量散射振幅，对介子原子中强相互作用效应的大量数据进行了分析。当采用这种方法时，大多数所谓的“缺失的s波排斥”被去除，从而表明在致密物质中部分手性对称恢复。所得电位也很好地描述了20 MeV介子在Ca上的弹性散射。需要进一步的弹性散射测试。
Extensive data on strong interaction effects in pionic atoms are analyzed with a density-dependent isovector scattering amplitude suggested recently by Weise to result from a density dependence of the pion decay constant. Most of the so-called ‘missing s-wave repulsion’ is removed when adopting this approach, thus indicating a partial chiral symmetry restoration in dense matter. The resulting potentials describe quite well also elastic scattering of 20 MeV pions on Ca. Further tests with elastic scattering are desirable.