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Dodelson-Widrow Mechanism In the Presence of Self-Interacting Neutrinos

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arxiv 1910.04901 v5 pith:PEA44FOA submitted 2019-10-10 hep-ph astro-ph.CO

Dodelson-Widrow Mechanism In the Presence of Self-Interacting Neutrinos

classification hep-ph astro-ph.CO
keywords neutrinosactivedodelson-widrowinteractionsmechanismtheyabsenceallow
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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keV-scale gauge-singlet fermions, allowed to mix with the active neutrinos, are elegant dark matter (DM) candidates. They are produced in the early universe via the Dodelson-Widrow mechanism and can be detected as they decay very slowly, emitting X-rays. In the absence of new physics, this hypothesis is virtually ruled out by astrophysical observations. Here, we show that new interactions among the active neutrinos allow these sterile neutrinos to make up all the DM while safely evading all current experimental bounds. The existence of these new neutrino interactions may manifest itself in next-generation experiments, including DUNE.

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Cited by 3 Pith papers

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