Study for unified understanding of muti-quark system in the realistic quark model

2014 Fiscal Year Final Research Report

• Project/Area Number: 24654071
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Suzuka National College of Technology
• Principal Investigator: NAKAMOTO Choki 鈴鹿工業高等専門学校, その他部局等, 准教授 (10311036)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: クォーク模型 / バリオン間相互作用 / パウリ原理 / 構造的斥力芯

Outline of Final Research Achievements

We investigate the quark-Pauli effect, which often brings important repulsive effects in the two-baryon system, in the nine-quark B8B8B8 (three octet-baryon) system.The effect of the Pauli repulsion is estimated by resolving the eigenvalue problem for the resonating-group method (RGM) norm kernel.
It turns out that the strong Pauli repulsion exists in the ΣＮＮ(I=2) and ΞΞΞ(I=1/2) systems, but no strong Pauli repulsion appears in the ΛＮＮ and ＮＮＮ systems. The Pauli repulsion is not the origin of the universal repulsion that is proposed to resolve the too soft equation of state of hyperonic neutron-star.

Free Research Field

原子核理論