Study of Light Hypernuclei in the Realistic Quark-Model Baryon-Baryon Interaction

本研究的目的是利用现实的重子-重子相互作用fss_2和fss对轻Λ超核进行详细的Faddeev和G-矩阵计算，并通过计算和实验的详细比较来阐明超子-核子和超子-超子相互作用。这些都是基于以下两个最新的发展：将fss_2和fss推广到由八重重子(B_8)组成的任意两重子系统，并用两团簇RGM核建立了三团簇方程。1.用fss_2和fss进行Faddeev计算：包括超子的ΛΝΝ-ΣΝΝ耦合道Faddeev计算，2Λα模型中^6&lt；Λ&gt；He(Nagara事件)的Faddeev计算，以及^9_Be的5/2^+和3/2+激发态的自旋-轨道分裂的分析。通过与实验的比较，得到了一些重要的结果。2.基于两簇RGM核的三簇Faddeev公式的发展：将该公式应用于三簇正交性条件模型(OCM)。得到了几乎冗余的Faddeev分量的新概念。3.改进了fss和fss，并开放了QMPACK主页：改进了计算机程序，使之能够在物理粒子基础上计算双重子系统，而不是同位旋基础。库仑力的处理也得到了改进。新的计算机代码和所获得的结果载于以下QMPACK主页。Http://www.qmpack.homelinux.com/~qmpack/index.php

The purpose of this study is to carry out detailed Faddeev and G-matrix calculations of light Λ hypernuclei by using the realistic baryon-baryon interactions fss2 and FSS, and to clarify the hyperon-nucleon and hyperon-hyperon interactions through detailed comparison between the calculations and experiments. These are based on the following two recent developments ; i.e., fss2 and FSS are extended to any two-baryon systems composed of the octet baryons (B_8), and a formulation of the three-cluster equation using two-cluster RGM kernels is made.1.Faddeev calculations using fss2 and FSS : These include the ΛΝΝ-ΣΝΝ coupled-channel Faddeev calculation of the hypertriton, the Faddeev calculation of ^6_<ΛΛ>He (NAGARA event) in the 2Λα model, and the analysis of the spin-orbit splitting of the 5/2^+ and 3/2^+ excited states of ^9_ΛBe. Some important results are obtained through the comparison with experiments.2.Development of the three-cluster Faddeev formulation using the two-cluster RGM kernels : This formulation is applied to the three-cluster orthogonality condition model(OCM). A new concept of the almost redundant Faddeev components is obtained.3.Improvement of fss2 and FSS, and opening of the QMPACK homepage : The computer codes are improved to calculate the two-baryon systems in the physical particle basis, in addition to the isospin basis. The treatment of the Coulomb force is also improved. The new computer code and the results obtained are given in the following QMPACK homepage. http://www.qmpack.homelinux.com/~qmpack/index.php