2022/10/02 by Á. Chavarría, Chavarria, Alvaro E.
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Particle Detector Development and Performance #Astrophysics and Cosmic Phenomena
paper · pdf · doi:10.48550/arxiv.2210.00587
The DAMIC experiment employs large-area, thick charge-coupled devices (CCDs) to search for the interactions of low-mass dark matter particles in the galactic halo with silicon atoms in the CCD target. From 2017 to 2019, DAMIC collected data with a seven-CCD array (40-gram target) installed in the SNOLAB underground laboratory. We report dark-matter search results, including a conspicuous excess of events above the background model below 200 eV\rm ee, whose origin remains unknown. We present details of the published spectral analysis, and update on the deployment of skipper CCDs to perform a more precise measurement by early 2023.