  In this paper, we study four-body systems consisting of diquark antidiquark,
and we analyze diquark-antidiquark in the framework of a two body (pseudo
point) problem. We solve Lippman Schwinger equation numerically for charm
diquark antidiquark systems and find the eigenvalues to calculate the binding
energies and masses of heavy tetraquarks with hidden charms. Our results are in
good agreement with theoretical and experimental data.
