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2019

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

de Gouvêa, André, Sen, Manibrata, Tangarife, Walter et al.

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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.

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

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