Probing Dark Matter Particles from Evaporating Primordial Black Holes via Electron Scattering in the CDEX-10 Experiment

Dark matter (DM) is a major constituent of the Universe. However, no definite evidence of DM particles (denoted as ``") has been found in DM direct detection (DD) experiments to date. There is a novel concept of detecting from evaporating primordial black holes (PBHs). We search for emitted from PBHs by investigating their interaction with target electrons. The examined PBH masses range from 110^15 to 710^16 g under the current limits of PBH abundance f₏₁₇. Using 205. 4 kgday data obtained from the CDEX-10 experiment conducted in the China Jinping Underground Laboratory, we exclude the --electron (--e) elastic-scattering cross section ₄ 510^-29 cm² for with a mass m_ 0. 1 keV from our results. With the higher radiation background but lower energy threshold (160 eV), CDEX-10 fill a part of the gap in the previous work. If (m_, ₄) can be determined in the future, DD experiments are expected to impose strong constraints on f₏₁₇ for large M₏₁₇s.