Analysis of the tetraquark and hexaquark molecular states with the QCD sum rules

Zhi-Gang Wang

Figure 11. The masses of the tetraquark and hexaquark molecular states with variations of the Borel parameters T2, where the (I), (II), (III) and (IV) correspond to the ${D}^{* }{\bar{D}}^{* }$, ${D}^{* }{D}^{* }$, ${D}^{* }{D}^{* }{\bar{D}}^{* }$ and ${D}^{* }{D}^{* }{D}^{* }$ tetraquark and hexaquark molecular states, respectively.