Direct dark matter searches and the CDEX research program

摘要

We sketch the landscape which gives rise to the missing energy density problem and highlight the direct experimental searches of weakly interacting massive particles (WIMPs) dark matter. An overview of the China Jinping underground laboratory as well as the China dark matter experiment (CDEX) dark matter program based on germanium detectors with sub-keV sensitivities is presented. The achieved results, status as well as the R& D and technology acquisition efforts towards a ton-scale experiment are reported.