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Experimental Limits on Solar Reflected Dark Matter with a New Approach on Accelerated-Dark-Matter-Electron Analysis in Semiconductors
- Source :
- Phys. Rev. Lett. 132, 171001 (2024)
- Publication Year :
- 2023
-
Abstract
- Recently a dark matter-electron (DM-electron) paradigm has drawn much attention. Models beyond the standard halo model describing DM accelerated by high energy celestial bodies are under intense examination as well. In this Letter, a velocity components analysis (VCA) method dedicated to swift analysis of accelerated DM-electron interactions via semiconductor detectors is proposed and the first HPGe detector-based accelerated DM-electron analysis is realized. Utilizing the method, the first germanium based constraint on sub-GeV solar reflected DM-electron interaction is presented with the 205.4 kg$\cdot$day dataset from the CDEX-10 experiment. In the heavy mediator scenario, our result excels in the mass range of 5$-$15 keV/$c^2$, achieving a 3 orders of magnitude improvement comparing with previous semiconductor experiments. In the light mediator scenario, the strongest laboratory constraint for DM lighter than 0.1 MeV/$c^2$ is presented. The result proves the feasibility and demonstrates the vast potential of the VCA technique in future accelerated DM-electron analyses with semiconductor detectors.<br />Comment: 7 pages, 4 figures. Version updated to match PRL version
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Lett. 132, 171001 (2024)
- Publication Type :
- Report
- Accession number :
- edsarx.2309.14982
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevLett.132.171001