Primordial black hole neutrinogenesis of sterile neutrino dark matter
Abstract
Sterile neutrinos are well-motivated and actively searched for new particles that would mix with the active neutrinos. We study their phenomenology when they are produced in the evaporation of early Universe black holes, a novel production mechanism that differs from all others and does not depend on the active-sterile mixing. The resulting hotter sterile neutrinos have a distinct spectrum and could be warm dark matter in the 0.3 MeV to 0.3 TeV mass range, distinct from the typical keV range. The possible coincidence of X-rays and gravitational waves is a unique novel signature of our scenario.
- Publication:
-
Physics Letters B
- Pub Date:
- May 2024
- DOI:
- 10.1016/j.physletb.2024.138609
- arXiv:
- arXiv:2309.12258
- Bibcode:
- 2024PhLB..85238609C
- Keywords:
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- Astrophysics - Cosmology and Nongalactic Astrophysics;
- Astrophysics - High Energy Astrophysical Phenomena;
- High Energy Physics - Phenomenology
- E-Print:
- 7 pages, 3 figures