摘要
The existence of dark matter(DM) is inferred by observing its gravitational effects. Its origin from the thermal equilibrium in the early universe is proposed by the “freeze-out” mechanism. To satisfy about 27% of the DM density in the universe,the DM in the “freeze-out” is typically restricted to have a mass ranging from MeVs to 10 s of TeV. In the past decays, this has motivated various underground and collider experiments to search for weakly interacting massive particles.
