DIQUONIA AND POTENTIAL MODELS

We present four new quark-quark potentials, developed in the framework of the nonrelativistic quark model (NRQM), which can reproduce quite well the spectra of mesons and baryons. They contain a central part wh ich is of type ''Coulomb + linear'' or ''Coulomb +2/3-power'', and a s trong but smooth hyperfine term. With these four potentials and the on e proposed by Bhaduri et al., we have calculated masses and decay prop erties of some interesting diquonia (q2q-2 mesons). We have not found appreciable difference between the results of the five potentials cons idered, indicating that the properties of diquonia are, to a large ext ent, potential-independent in the NRQM.