  Dibaryon candidates with strangeness S=-2,-3,-4,-5,-6 are studied in terms of
the extended quark delocalization and color screening model. The results show
that there are only a few promising low lying dibaryon states: The H and
di-Omega may be marginally strong interaction stable but model uncertainties
are too large to allow any definitive statement. The SIJ=-3,1/2,2 N-Omega state
is 62 MeV lower than the N-Omega threshold and 24 MeV lower than the
Lambda-Xi-pi threshold. It might appear as a narrow dibaryon resonance and be
detectable in the RHIC detector through the reconstruction of the vertex mass
of the Lambda-Xi two body decay. The effects of explicit K and eta meson
exchange have been studied and found to be negligible in this model. The
mechanisms of effective intermediate range attraction, sigma meson exchange and
kinetic energy reduction due to quark delocalization are discussed.
