Neutrino lines from DM decay induced by high-scale seesaw interactions

Abstract

If the stability of the dark matter (DM) particle is due to an accidental symmetry, nothing prevents UV physics from destabilising it by inducing DM decays suppressed by powers of the UV scale. The seesaw physics, presumably at the origin of neutrino mass, could induce such a decay. We show that if the seesaw scale lies around the usual Weinberg operator scale, the induced DM decay could generically lead to neutrino lines whose intensity is of the order of the present sensitivity of neutrino telescopes. We illustrate this possibility with models in which the DM is made of the gauge boson(s) of an abelian or non-abelian gauge symmetry.

arXiv comment8 pages, 6 figures

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Cited by in corpus (7)

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• A general study of decaying scalar dark matter: existing limits and projected radio signals at the SKA
• Dark matter produced from neutrinos
• Relic Challenges for Vector-Like Fermions as Connectors to a Dark Sector
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• A closer look at the seesaw-dark matter correspondence
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