论文标题
与插入式互动的组成夸克模型中的低洼隐藏和双链四夸克状态
The low-lying hidden- and double-charm tetraquark states in a constituent quark model with Instanton-induced Interaction
论文作者
论文摘要
在非层次主义的夸克电势模型中研究了低洼的隐藏和双链四夸克状态的光谱，在这种模型中，激体诱导的相互作用被视为夸克之间的残留自旋依赖性超精美相互作用。模型参数是通过拟合地面强子状态的光谱来固定的。我们的数值结果表明，目前研究的四夸克状态的质量与实验观察到的异国情调介子的候选物的质量接近，这表明相应的紧凑型Tetraquark组件可能在观察到的奇特状态下具有相当大的概率。
Spectrum of the low-lying hidden- and double-charm tetraquark states are investigated in a nonrelativistic quark potential model, where the Instanton-induced interaction is taken as the residual spin-dependent hyperfine interaction between quarks. The model parameters are fixed by fitting the spectrum of the ground hadron states. Our numerical results show that masses of several presently studied tetraquark states are close to those of the experimentally observed candidates of exotic meson, which indicates that the corresponding compact tetraquark components may take considerable probabilities in those observed exotic states.
