$QQ\bar{q}\bar{q}$ in a chiral constituent quark model

Yue Tan, Weichang Lu, Jialun Ping

Inspired by ${\Xi }_{cc}$ reported by LHCb Collaboration and $X(5568)$ reported by $D0$ Collaboration, the $QQ\bar{q}\bar{q}$ ($Q=c,b,s$, $q=u,d$) tetraquark states, are studied in the…