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

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

利用实际的重子-重子相互作用fss 2和FSS对轻Λ超核进行了详细的Faddeev和G矩阵计算，并通过计算与实验的详细比较，阐明了超子-核子和超子-超子相互作用.这些建议是基于以下两个最近的事态发展，即：将fss 2和FSS推广到由八重态重子（B_8）组成的任何两重子系统，并利用两集团RGM核建立了三集团方程的公式。这些计算包括超曲子的Λ NN-NNNN耦合道Faddeev计算、^6_<ΛΛ>He的Faddeev计算、（NAGARA事件），并分析了^9_ΛBe的5/2^+和3/2^+激发态的自旋轨道分裂。通过与实验结果的比较，得到了一些重要的结果。2.基于两集团RGM核的三集团Faddeev公式的发展：将该公式应用于三集团正交条件模型（OCM）。3.改进了fss 2和FSS，并开通了QMPACK主页：改进了计算程序，使之在物理粒子基和同位旋基下计算重子系统。对库仑力的处理也作了改进。新的计算机代码和获得的结果在下面的QMPACK主页中给出。http://www.qmpack.homelinux.com/~qmpack/index.php

项目成果

藤原 義和(Y.Fujiwara): "Interactions between Octet Baryons in the SU_6 Quark-Model and their Applications to Light Hypernuclei"Nuclear Physics A. (発表予定). (2004)

Y.Fujiwara：“SU_6 夸克模型中八重子重子之间的相互作用及其在轻超核中的应用”核物理 A.（待提交）。

Faddeev Calculation of the Hypertriton Using the SU_6 Quark-Model Nucleon-Nucleon and Hyperon-Nucleon Interactions

Faddeev 使用 SU_6 夸克模型核子-核子和超子-核子相互作用计算 Hypertriton

• 发表时间: 2004
• 期刊: Physical Review C 70巻・2号
• 作者: Y.Fujiwara;C.Nakamoto;M.Kohno;Y.Suzuki;K.Miyagawa;Y.Fujiwara;Y.Fujiwara;Y.Fujiwara;Y.Fujiwara
• 通讯作者: Y.Fujiwara

A Consistent 3α and 2α Λ Faddeev Calculation Using the 2α RGM Kernel

使用 2α RGM 内核进行一致的 3α 和 2α Λ Faddeev 计算

• 发表时间: 2004
• 期刊: Nuclear Physics A 738巻
• 作者: Y.Fujiwara;C.Nakamoto;M.Kohno;Y.Suzuki;K.Miyagawa;Y.Fujiwara;Y.Fujiwara;Y.Fujiwara;Y.Fujiwara;Y.Fujiwara;Y.Fujiwara;Y.Fujiwara;M.Kohno;Y.Fujiwara;Y.Fujiwara
• 通讯作者: Y.Fujiwara

藤原 義和(Y.Fujiwara): "Solving Three-Cluster OCM Equations in the Faddeev Formalism"Few-Body Systems. (発表予定). (2004)

Y.Fujiwara：“求解 Faddeev 形式主义中的三簇 OCM 方程”少体系统（2004 年）。

Quark-Model Baryon-Baryon Interaction and its Applications to Hypernuclei

夸克模型重子-重子相互作用及其在超核中的应用

• 发表时间: 2004
• 期刊: Progress of Theoretical Physics, Supplement 157巻
• 作者: Y.Fujiwara;C.Nakamoto;M.Kohno;Y.Suzuki;K.Miyagawa;Y.Fujiwara;Y.Fujiwara;Y.Fujiwara;Y.Fujiwara;Y.Fujiwara;Y.Fujiwara;Y.Fujiwara
• 通讯作者: Y.Fujiwara