Speaker
Description
We report the first constraints on the light fermionic dark matter (DM) absorption on nuclear targets via magnetic dipole-based interaction, using the full 589.3 kg·day exposure collected with the CDEX-10 experiment at the China Jinping Underground Laboratory. In this work, we present a newly acquired 139.7 kg·day dataset from the C10A detector. By applying a new time-interval analysis method to suppress clustered noise events, an analysis threshold of 300 eV was achieved for the C10A dataset. Using the combined exposure, we set constraints on the fermionic DM absorption cross section $σ_{\text{NC}}$ at the 10-45 MeV/c2 DM mass region, and on the coupling $e^2U^2$ for dipole-charge interaction with dark photon masses of 100 keV, 100 MeV, and 1 GeV.
