  We explore the minimal extension of the Standard Model with fermionic cold
dark matter. The interactions between the dark matter and the Standard Model
matters are described by the non-renormalizable dimension-5 term. We show that
the measured relic abundance of the cold dark matter can be explained in our
model and predict the direct detection cross section. The direct search of the
dark matter provides severe constraints on the mass and coupling of the minimal
fermionic dark matter with respect to the Higgs boson mass.
