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

现实夸克模型重子-重子相互作用中轻超核的研究

• 批准号: 15540270
• 负责人: FUJIWARA Yoshikazu
• 金额: $ 2.24万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15540270/
• 关键词: quark model; baryon baryon interaction; strangeness; hyperon nucleon interaction; hyperon; hypernuclei; resonating-group method; Faddeev equation; ハイペロンハイペロン相互作用; quark model; baryon baryon interaction; strangeness; hyperon nucleon interaction; hyperon; hypernuclei; resonating-group method; Faddeev equation; ハイペロンハイペロン相互作用

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

这项研究的目的是通过使用逼真的Baryon-Baryon相互作用FSS2和FSS进行详细的FADDEEV和g-matrix计算，并通过详细的计算和实验之间的详细比较来阐明近似 - 核核和甲基核酸盐和hyperon-hyperon相互作用。这些基于以下最近的两个发展； i.e., fss2 and FSS are extended to any two-baryon systems composed of the octet baryons (B_8), and a formula of the three-cluster equation using two-cluster RGM kernels is made.1.Faddeev calculations using fss2 and FSS: These include the ΛΝΝ-ΣΝ coupled-channel Faddeev calculation of the hypertriton, the 2λα模型中的 ^6_<λλ> He（Nagara事件）的Faddeev计算，以及对 ^9_λbe的5/2 ^+和3/2 ^+激发态的自旋轨道分裂的分析。通过与实验的比较获得了一些重要的结果。2。使用两群集RGM内核的三群集Faddeev公式的开发：将此公式应用于三群集正交性模型（OCM）。获得了几乎冗余FADDEEV组件的新概念。3。FSS2和FSS的进度，以及QMPACK主页的打开：改进了计算机代码以在物理粒子的基础上计算两种巴里元系统，除了Isospin基础外。库仑力的处理也得到了改善。新的计算机代码和获得的结果在以下QMPACK主页中给出。 http://www.qmpack.homelinux.com/~qmpack/index.php