2024/09/02 by Raza, M. Tousif
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #History and Developments in Astronomy #Scientific Research and Discoveries
paper · pdf · doi:10.48550/arxiv.2409.01486
openalex publication_date 2024/09/02 · openalex created_date 2024/09/29 · openalex updated_date 2026/07/28
Mirror dark matter, a hidden-sector counterpart to the Standard Model with identical particle content, could be detectable through photon-mirror-photon kinetic mixing (ε). We present new constraints from CDEX-10 low-energy recoil data, establishing ε< 2 × 10-10 for mirror nuclear dark matter in the 10--56 GeV mass range. Projections for CDEX-300 (with 95 days of exposure) show significantly improved sensitivity, reaching ε< 3.75 × 10-11 for a local mirror halo temperature below 0.3 keV, surpassing existing constraints from LUX and positronium decays. These results demonstrate CDEX-300's unique capability to probe kinetic-mixing parameter space, providing stringent constraints on mirror dark matter models.