  We discuss the possible connection between the scale for baryon number
violation and the cosmological bound on the dark matter relic density. A simple
gauge theory for baryon number which predicts the existence of a leptophobic
cold dark matter particle candidate is investigated. In this context, the dark
matter candidate is a Dirac fermion with mass defined by the new symmetry
breaking scale. Using the cosmological bounds on the dark matter relic density
we find the upper bound on the symmetry breaking scale around 200 TeV. The
properties of the leptophobic dark matter candidate are investigated in great
detail and we show the prospects to test this theory at current and future
experiments. We discuss the main implications for the mechanisms to explain the
matter and antimatter asymmetry in the Universe.
