Cosmic neutrino background search experiments as decaying dark matter detectors

David McKeen (TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada)

We investigate the possibility that particles that are long-lived on cosmological scales, making up part or all of the dark matter, decay to neutrinos that have present-day energies around an eV. The neutrinos from these decays can potentially be visible at experiments that hope to directly observe the cosmic neutrino background through neutrino capture on tritium, such as PTOLEMY. In the context of a simple model that can realize such decays, we discuss the allowed signatures at a PTOLEMY-like experiment given current cosmological constraints.

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Published on:
18 July 2019
Publisher:
APS
Published in:
Physical Review D , Volume 100 (2019)
Issue 1
DOI:
https://doi.org/10.1103/PhysRevD.100.015028
arXiv:
1812.08178
Copyrights:
Published by the American Physical Society
Licence:
CC-BY-4.0

Fulltext files: