Heavy Tetraquarks in the Diquark-Antidiquark Picture

Understand

The homogeneous Lippmann-Schwinger integral equation is solved in momentum space to calculate the masses of heavy tetraquarks with hidden charm and bottom.

• The tetraquark bound states are studied in the diquark-antidiquark picture as a two-body problem.
• A regularized form of the diquark-antidiquark potential is used to overcome the singularity of the confining potential at large distances or small momenta.
• Our numerical results indicate that the relativistic effect leads to a small reduction in the mass of heavy tetraquarks, which is less than $2\,\%$ for charm and less than $0.2\,\%$ for bottom tetraquarks.