Speaker
Description
The COSINE-100 experiment, situated at the Yangyang underground laboratory, utilizes NaI(Tl) detectors to search for WIMP dark matter and provide a direct, model-independent test of the DAMA/LIBRA annual modulation claim.
While previous model-independent analyses of the full six-year dataset found no evidence of annual modulation, excluding the DAMA/LIBRA signal at a significance greater than 3$\sigma$, this presentation focuses on the model-dependent WIMP extraction results.
Event selection for the full six-year dataset has been completed, and the analysis threshold has been lowered from 0.7 to 0.5 keV. This improvement enables the COSINE-100 experiment to achieve competitive sensitivity to WIMPs with GeV-scale masses.
We present the final WIMP extraction analysis from this full exposure, which excludes the DAMA/LIBRA-favored region for spin-independent interactions and provides world-leading constraints on spin-dependent WIMP–nucleon cross sections for WIMP masses in the 0.1 – 5 GeV/c² range.
| Main Contribution topic | Direct detection |
|---|---|
| Secondary contribution topic | Light Dark Matter |