论文标题
可能三重的tetraquark国家
Possible triply heavy tetraquark states
论文作者
论文摘要
在目前的工作中，三个繁重的四夸克斯指出，$ qq \ bar {q} \ bar {q} $，带有$ q =（c，b）$和$ q =（u，d，s）$，所有可能的量子数是在带有恢复量子地面方法的chiral Quark模型框架中系统地研究的。考虑了两种结构，包括介子 - 膜配置（颜色 - 单声道和隐藏的颜色通道）和diquark-antidiquark配置（颜色sextet-antisextet和color triplet-antitlet-antitretlet）。在考虑的系统中，为$ cc \ bar {c} \ bar {q^{'}} $，$ bb \ bar {c} \ bar {q^{'}} $和$ bc \ bar {c} \ bar {q} $ tetraquarks。从目前的估计中，我们发现，耦合的通道效应对于形成低于阈值的四夸克状态具有重要意义，这对于强衰变是稳定的。
In the present work, the triply heavy tetraquarks states $QQ\bar{Q}\bar{q}$ with $Q=(c, b)$ and $q=(u, d, s)$ with all possible quantum numbers are systematically investigated in the framework of the chiral quark model with the resonance ground method. Two kinds of structures, including the meson-meson configuration (the color-singlet channels and the hidden-color channels) and the diquark-antidiquark configuration (the color sextet-antisextet and the color triplet-antitriplet), are considered. In the considered system, several bound states are obtained for the $cc\bar{c}\bar{q^{'}}$, $bb\bar{c}\bar{q^{'}}$ and $bc\bar{c}\bar{q}$ tetraquarks. From the present estimations, we find that the coupled channel effect is of great significance for forming the below thresholds tetraquark states, which are stable for strong decays.
