arXiv:2510.21458·v2·High Energy Physics — Experiment
Constraints on ultraheavy dark matter from the CDEX-10 experiment at the China Jinping Underground Laboratory
Y. F. Wang🇨🇳 · L. T. Yang🇨🇳 · Q. Yue🇨🇳 · K. J. Kang🇨🇳 · Y. J. Li🇨🇳 · H. P. An🇨🇳 · Greeshma C.🇹🇼 · J. P. Chang🇨🇳 · H. Chen🇨🇳 · Y. H. Chen🇨🇳 · J. P. Cheng🇨🇳 · J. Y. Cui🇨🇳
Abstract
We report a search for ultraheavy dark matter (UHDM) with the CDEX-10 experiment at the China Jinping Underground Laboratory. Using a Monte Carlo framework that incorporates Earth shielding effects, we simulated UHDM propagation and energy deposition in p-type point-contact germanium detectors. Analysis of 205.4 kgday exposure in the 0.16--4.16 keVee range showed no excess above background. Our results exclude the spin-independent UHDM-nucleon scattering with two cross section scales, with the UHDM mass from to GeV, and provide the most stringent constraints with solid-state detectors below GeV.
Comments: 8 pages, 5 figures. Version updated to match PRD version