Baryonium states in multiquark spectroscopy

The spectrum of qq$\text{qq}$ states, examined in a quark-gluon model combined with dual unitarization, yields two types of baryoniums both of which have narrow widths into mesons. One type has normal hadronic widths ～ 100 MeV into B$\text{B}$. The other is narrow, ～ 10 MeV, and goes into B$\text{B}$ only reluctantly, preferring, if possible, to decay by cascade, and, being a consequence only of hidden colour, is an important object to verify experimentally.