Exodus: Hidden origin of dark matter and baryons
  We propose a new framework for explaining the proximity of the baryon and
dark matter relic densities \Omega_{DM} \approx 5\Omega_B. The scenario assumes
that the number density of the observed dark matter states is generated due to
decays from a second hidden sector which simultaneously generates the baryon
asymmetry. In contrast to asymmetric dark matter models, the dark matter can be
a real scalar or Majorana fermion and thus presents distinct phenomenology. We
discuss aspects of model building and general constraints in this framework. We
present a simple supersymmetric implementation of this mechanism and show that
it can be used to obtain the correct dark matter relic density for a bino LSP.
