Spectroscopy of di-meson bound states in charm and beauty sector

Using the Woods Saxon plus Coulomb type of interaction between two hadron molecules, we have calculated the binding energies and masses of the tetraquark states such as $D\bar{D}$, $D{\bar{D}}^{\ast }$, $D^{\ast }{\bar{D}}^{\ast }$, $D^{+}{\bar{D}}^{\ast }$ in the charm sector and $B\bar{B}$, $B^{\ast }{\bar{B}}^{\ast }$, $B{\bar{B}}^{\ast }$ in the bottom sector.