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） 15：00

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年本科毕业于山东大学泰山学堂物理取向；

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；

自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。