Dark Matter Antibaryons from a Supersymmetric Hidden Sector
  The cosmological origin of both dark and baryonic matter can be explained
through a unified mechanism called hylogenesis where baryon and antibaryon
number are divided between the visible sector and a GeV-scale hidden sector,
while the Universe remains net baryon symmetric. The "missing" antibaryons, in
the form of exotic hidden states, are the dark matter. We study model-building,
cosmological, and phenomenological aspects of this scenario within the
framework of supersymmetry, which naturally stabilizes the light hidden sector
and electroweak mass scales. Inelastic dark matter scattering on visible matter
destroys nucleons, and nucleon decay searches offer a novel avenue for the
direct detection of the hidden antibaryonic dark matter sea.
