English

The low-energy spectrum in DAMIC at SNOLAB

Cosmology and Nongalactic Astrophysics 2022-10-04 v1 High Energy Physics - Experiment Instrumentation and Detectors

Abstract

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 eVee_{\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.

Keywords

Cite

@article{arxiv.2210.00587,
  title  = {The low-energy spectrum in DAMIC at SNOLAB},
  author = {Alvaro E. Chavarria},
  journal= {arXiv preprint arXiv:2210.00587},
  year   = {2022}
}

Comments

Proceedings for the 14th International Conference on Identification of Dark Matter, Submission to SciPost