Study on Triple-Hadron Bound States with Gaussian Expansion Method

In recent years, more and exotic hadronic states have been discovered successively. Many of them can be explained as molecules, such $D_{s0}^*(2317)$, $X(3872)$, $P_c$ pentaquark states. Analogous to the formation nuclei, we study three-body molecules with Gaussian expansion method predict existence $DDK$, $\Xi_{cc}\Xi_{cc}\bar{K}$, $BB\bar{K}$ bound states, which are likely found in current updated facilities.