Quark Confinement for Multi-Quark Systems

发布日期:2024-05-07


报告题目: Quark Confinement for Multi-Quark Systems

报告人:王广娟(KEK

时间:2024-5-8(星期三) 1500

地点:知新楼C913

邀请人:刘言锐

报告摘要:In this presentation, I will introduce a new color basis system and confinement mechanism for multi-quark systems according to the string-type picture of QCD. The color string configurations in the strong coupling QCD are implemented in the set of color basis states. The extended color Hilbert space for $QQ\bQ\bQ$ systems includes a ``hidden color'' state, which mixes with two-meson states $Q\bQ+Q\bQ$. This mixing effect leads to an attractive potential sufficient to form a bound state. We apply a realistic Hamiltonian model with the new scheme to fully charmed tetraquark states, $cc\bar c\bar c$, and find a bound and two resonant states, which could potentially correspond to the $cc\bar c\bar c$ tetraquark candidates recently observed in experiments. The results will be compared with the conventional confinement potential which is taken as the sum of the two-body color-dependent linear potentials.


报告人简介:

王广娟,2013年本科毕业于太阳集团城网址83138泰山学堂物理取向;

2018年博士毕业于北京大学;

2018年后先后在北京大学高能物理中心和日本原子能研究机构(JAEA)从事博士后研究;

2022年以来,担任高能加速器研究机构(KEK)的助理教授。近年的研究兴趣主要为:奇特态与有限体积效应。