Hypernuclei and Deep Hole States

在项目中，我们研究了以下项目：（1）深s空穴核激发下的单、双LAMBDA超核激发态产生机制的研究;（2）轻核碎裂选择定则的数值证明，即s空穴能衰变到非α核的通道中，如^3He和^3H的衰变通道中;（3）计算轻核和具有相似组态的LAMBDA超核和LAMBDALAMBDA超核的s-空穴态的所有能量允许的两体通道的光谱因子和部分宽度;（4）研究S = -2超核的全寿命;生产（XI-超核），转换（Xlp *LAMBDALAMBDA）和衰变在上述研究（1）-（3）的基础上，可以研究（碎裂）过程。（一）.我们研究了从XI超核到双LAMBDA超核的转变过程 ...更多信息 原子核的典型情况下，其中占主导地位的转换概率被发现到深的s-空穴激发的状态。（二）、我们成功地计算了所有两个体衰变通道的s-空穴核态的光谱因子和约化宽度。我们可以证实轻核中的s空穴态可以碎裂成非α通道，如^3He或t，而碎裂成α通道则受到很大的抑制。这个选择规则也被证明是有效的超核碎裂。（三）、我们研究了s-空穴核态和超核态的衰变宽度。我们有一个重要的认识，即轻核中s-空穴态的总宽度主要由衰变宽度组成，而不是由扩散宽度组成，这与重核中深空穴态的总宽度不同。我们提出了轻核s-空穴态碎片衰变的实验研究，该实验项目已被大坂大学RCNP接受。（四）、根据上述研究，1. 3.,我们研究了能产生什么样的LAMBDA和LAMBDALAMBDA超核，以及（K^-，K^+）能产生多少超核。本研究阐明了观察到的量与尚未已知的YN和YY有效相互作用之间的相互关系。我们强烈期待在KEK和BNL的实验。少

In the project, we have studied the following items ;(1) the study on the production mechanism of the single and double LAMBDA-hypernuclear excited states accompanying with the deep s-hole nuclear excitation, (2) the numerical proof of the selection rule for fragmentation in light nuclei that the s-hole states can decay into the channels of non-a nuclei such as the ^3He and ^3H decay channels, (3) the calculations of the spectroscopic factors and partial widths for all the energetically allowed two-body channels of the s-hole states of light nuclei and of the LAMBDA-and LAMBDALAMBDA-hypernuclei with similar configuration and (4) the study on the whole lives of the S = -2 hypernuclei ; production (XI-hypernuclei), conversion (XIp*LAMBDALAMBDA) and decay (fragmentation) processes which can be studied on the bases of the above mentioned investigations (1)-(3).The main results are summarized briefly :(1). We have studied the conversion processes into double LAMBDA-hypernuclei from XI-hyper … More nuclei for typical cases, in which the dominant conversion probability are found to be that into the states with the deep s-hole excitation. (2). We have succeeded in calculating the spectroscopic factors and reduced widths of the s-hole nuclear states for all the two body decay channels. We can confirm the selection rule for fragmentation that s-hole states in light nuclei can befragmented into non-alpha channels such as ^3He or t, while the fragmentation into alpha is largely suppressed. This selection rule is also shown to be valid for hypernuclear fragmentation. (3). We have studied decay widths of s-hole nuclear and hypernuclear states. We have an important recognition that the total width of the s-hole state in light nuclei consists mainly of the decay width but not of spreading width in contrast to the deep hole states in heavy nuclei. We have proposed the experimental studies on the fragment decays from the s-hole state in light nuclei, of which the experimental project has been accepted in RCNP of Osaka University. (4). Based on the above mentioned studies 1.-3., we have made the study on what kinds of LAMBDA and LAMBDALAMBDA hypernuclei can be produced and how much can be expected to produce those hypernuclei by (K^-, K^+). This study clarifies the interconnection between the observe quantities and the YN and YY effective interactions which have not been known. We put strongly in anticipation of the experiments in KEK and BNL. Less