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arXiv · 2309.12258

Primordial Black Hole Neutrinogenesis of Sterile Neutrino Dark Matter

Muping Chen·Graciela B. Gelmini·Philip Lu·Volodymyr Takhistov
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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.

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Muping Chen, Graciela B. Gelmini, Philip Lu, Volodymyr Takhistov. 2023-09-21. Primordial Black Hole Neutrinogenesis of Sterile Neutrino Dark Matter. https://doi.org/10.1016/j.physletb.2024.138609

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