Present status of WIMP dark matter; light, regular, and heavy candidates

The WIMP is known to be one of the most influential dark matter candidates and is being intensively searched for at collider experiments, underground laboratories, and cosmological/astrophysical observations. It looks cornered due to the negative results of the experiments/observations. However, several regions are uncharted, even if the WIMP mass is around the EW scale. Moreover, regions with a WIMP mass heavier and lighter enough than the EW scale are also largely uncharted, though those are well-motivated from the viewpoint of minimality and the dark sector scenario. We studied such regions systematically and comprehensively utilizing the effective field theory and simplified models for the WIMP and clarified which regions are indeed uncharted. We found that future large-scale direct dark matter detection experiments and those sensitive to the low-mass (sub-GeV) WIMP play a crucial role in investigating the regions.