Mass spectra and decay widths of dimesonic hadron molecules

In the past few years, tremendous progress has been achieved experimentally in the multiquark states, specially in the heavy quark sector. Many theoretical attempts have been made to resolved the structure of multiquark states as di-hadronic molecules. The molecular structures of tetraquark states composed of heavy-light mesons has been investigated. In the molecular framework, the masses and digamma decay widths of the meson - antimeson states are computed using the Hellmann potential