Liquid xenon experiments have advanced dark matter direct detection. While traditionally focused on keV-scale signals, the MeV region also offers rich information for studying neutrinos and dark matter. The PandaX-4T experiment at the China Jinping Underground laboratory uses 3.7 tons of natural xenon. We have developed a dedicated data analysis framework extending its energy range to the MeV...
The neutrino floor, a theoretical sensitivity limit for dark matter direct detections, is being redefined as the boundary of a dynamic ``neutrino fog", where neutrino signals become inevitable, obscuring DM detection due to the statistical and systematic uncertainties. This study provides the first site-specific analysis of the neutrino floor at China Jinping Underground Laboratory (CJPL),...
Exhibiting the largest cross-section of all interaction channels for MeV neutrinos, coherent elastic neutrino-nucleus scattering (CEvNS) offers a compelling pathway for the remote monitoring of nuclear reactors. Liquid xenon time projection chambers (LXeTPCs) have emerged as an ideal technology for CEvNS detection, primarily due to their low backgrounds and energy thresholds. The RELICS...
The observations of ultra-dense substructures in strong lensing systems challenge the standard
cosmology model at small scales. Self-interacting dark matter (SIDM), as one of the alternatives
to the cold collisionless dark matter (CDM) of the standard cosmology model, provides a natural
mechanism for forming such structures via gravothermal core-collapsing. We show that strong...
