Strong New Limits on Light Dark Matter from Neutrino Experiments
Abstract
The non-detection of GeV-scale WIMPs has led to increased interest in more general candidates, including sub-GeV dark matter. Direct detection experiments, despite their high sensitivity to WIMPs, are largely blind to sub-GeV dark matter. Recent work has shown that cosmic-ray elastic scattering with sub-GeV dark matter would both alter the observed cosmic ray spectra and produce a flux of relativistic dark matter, which would be detectable with traditional dark matter experiments as well as larger, higher-threshold detectors for neutrinos. Using data, detectors, and analysis techniques not previously considered, we substantially increase the regions of parameter space excluded by neutrino experiments for both dark matter-nucleon and dark matter-electron elastic scattering. We also show how to further improve sensitivity to light dark matter.
Cite
@article{arxiv.1906.11283,
title = {Strong New Limits on Light Dark Matter from Neutrino Experiments},
author = {Christopher V. Cappiello and John F. Beacom},
journal= {arXiv preprint arXiv:1906.11283},
year = {2021}
}
Comments
Main text: 14 pages, 9 figures. Updated with errata describing a couple minor numerical errors, our corrections, and our updated results