An analytical approach to the mass spectrum of heavy tetraquarks in dimeson model Nahid Amiri, S. Mohammad Moosavi Nejad, A. Armat and Mansour Farhadi Eur. Phys. J. Plus, 137 4 (2022) 498 Published online: 22 April 2022 DOI: 10.1140/epjp/s13360-022-02658-y