Limits on Light Weakly Interacting Massive Particles from the First 102.8 kg x day Data of the CDEX-10 Experiment

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Jiang H., Jia L. P., Yue Q., Kang K. J., Cheng J. P., Li Y. J., ...More

PHYSICAL REVIEW LETTERS, vol.120, no.24, 2018 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 120 Issue: 24
  • Publication Date: 2018
  • Doi Number: 10.1103/physrevlett.120.241301
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Dokuz Eylül University Affiliated: No


We report the first results of a light weakly interacting massive particles (WIMPs) search from the CDEX-10 experiment with a 10 kg germanium detector array immersed in liquid nitrogen at the China Jinping Underground Laboratory with a physics data size of 102.8 kg day. At an analysis threshold of 160 eVee, improved limits of 8 x 10(-42) and 3 x 10(-36) cm(2) at a 90% confidence level on spin-independent and spin-dependent WIMP-nucleon cross sections, respectively, at a WIMP mass (m(chi)) of 5 GeV/c(2) are achieved. The lower reach of m(chi) is extended to 2 GeV/c(2).