对_∧~5He的过紧束缚问题的一个可能的新解释  

A PROBABLE EXPLANATION OF THE _A^5He OVERBINDING PROBLEM

作　　者：柳继锋[1] 沈建平[2] 厉光烈[2] 

机构地区：[1]广西师范大学 [2]中国科学院高能物理研究所

出　　处：《高能物理与核物理》1989年第9期814-821,共8页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金

摘　　要：本文在分析构成_Λ~5He的过紧束缚问题因素的基础上,对壳心核~4He的波函数作适当的调整,以现有的Λ-N相互作用势做计算,所给出的_Λ~5He基态的Λ超子结合能理论值与实验值大致相符.由此,_Λ~5He的过紧束缚问题可能得到解释.In this paper, based upon analysing the various factors which might cause the overbinding of _∧~5He, we make a proper adjustment for the wave function of the core.nucleus ~4He. With the adjusted core wave function and various ∧-N interactions, we calculate the ∧-hyperon binding energy B_∧(_∧~5He) of the _∧~5He ground state and obtain a reasonable agreement between the theoretical and experimental values of B_∧(_∧~5He). Thus, the 5 ∧ He overbinding problem could be explained.

关 键 词：氦 超子 过紧束缚 解释 

分 类 号：O572.344[理学—粒子物理与原子核物理]