Dark Forces At The Tevatron
  A simple explanation of the W+dijet excess recently reported by the CDF
collaboration involves the introduction of a new gauge boson with sizable
couplings to quarks, but with no or highly suppressed couplings to leptons.
Anomaly-free theories which include such a leptophobic gauge boson must also
include additional particle content, which may include a stable and otherwise
viable candidate for dark matter. Based on the couplings and mass of the Z'
required to generate the CDF excess, we predict such a dark matter candidate to
possess an elastic scattering cross section with nucleons on the order of sigma
~ 10^-40 cm^2, providing a natural explanation for the signals reported by the
CoGeNT and DAMA/LIBRA collaborations. In this light, CDF may be observing the
gauge boson responsible for the force which mediates the interactions between
the dark and visible matter of our universe.
