2021•Proceedings of 40th International Conference on High Energy physics — PoS(ICHEP2020)Open access

New Limits on WIMP Dark Matter from Annual Modulation Analysis of the CDEX Experiment at the China Jinping Underground Laboratory

Hau-Bin Li

Abstract

We present results on light weakly interacting massive particle (WIMP) searches with annual modulation (AM) analysis on data from a 1-kg mass p-type point-contact germanium detector of the CDEX-1B experiment at the China Jinping Underground Laboratory. The 90% C.L. allowed regions implied by the DAMA/LIBRA and CoGeNT AM-based analysis are excluded at >99.99% and >98% C.L., respectively. These results correspond to the best sensitivities at WIMP masses below 6 GeV among WIMP AM measurements.

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Key concepts: WIMP, Physics, Massive particle, Dark matter, Weakly interacting massive particles, Particle physics, Semiconductor detector, Detector