Systematics ofQ2(Q¯2)systems with a chromomagnetic interaction

Within the framework of a simple model including chromomagnetic interactions only, the energies of diquonia $Q^2\left({\overline{Q}}^2\right)$ with orbital angular momentum $L=0\mathrm{}$ are calculated and compared to the threshold energies. The results are given as functions of mass ratios and all possible diquonia built with $u$, $d$, $s$, $c$, $b$ quarks and spins $S=0,1,2\mathrm{}$ are studied. A number of new systems which could be bound under strong interactions are proposed.