Limits on light WIMPs with a germanium detector at 177 eVee threshold at
  the China Jinping Underground Laboratory
  The China Dark Matter Experiment reports results on light WIMP dark matter
searches at the China Jinping Underground Laboratory with a germanium detector
array with a total mass of 20 g. The physics threshold achieved is 177 eVee
("ee" represents electron equivalent energy) at 50% signal efficiency. With
0.784 kg-days of data, exclusion region on spin-independent coupling with the
nucleon is derived, improving over our earlier bounds at WIMP mass less than
4.6 GeV.
