  The ground states of double-charm hyperons form a spin 1/2 isospin 1/2
multiplet analogous to that of nucleons. Their main strong interaction may be
inferred directly from the corresponding nucleon-nucleon interaction by
multiplication of the interaction components by the appropriate fractional
difference between interaction strengths for pairs of light flavor quarks and
pairs of triplets, e.g. nucleons, of light flavor quarks. By construction of
the interaction between the recently discovered double-charm hyperons by this
method from several realistic nucleon-nucleon interaction models it is shown
that double-charm hyperons are likely to form bound (or possibly meta-stable)
states akin to the deuteron in the spin triplet state. Double beauty baryons
would form corresponding deeply bound states. Nucleons and double charm
(beauty) hyperons will also form bound states. The existence of hypernuclei
with double-charm and double-beauty hyperons, which are stable against the
strong decay, is very likely.
