We calculate the two- and three-body spectra of deltas using a chiral quark
cluster model and a meson-exchange model for the Delta Delta interaction.
The ordering of the states is pretty much,model independent. Both models pr
edict the existence of four aa bound states that couple to the NN system. T
hree of these states. can be identified with known NN states. The fourth st
ate corresponds to a new NN resonance: with isospin 0, spin 3 and positive
parity. A possible signal of this resonance appears in recent analyses of N
N data.