Direct Detection of Dark Matter Degenerate with Colored Particle in Mass

We study the scattering cross section of dark matter with nucleon, assuming the dark matter is degenerate in mass with new colored particles below TeV scale. It is difficult for the hadron collider experiments to confirm or exclude such a scenario since the QCD jets produced in the cascade decay of the new particles are too soft to be triggered in the event selection. It is shown that both of the spin-independent and spin-dependent couplings of the dark matter with nucleon are enhanced and the scattering cross sections can reach even the current bound of the dark matter search experiments.