Gravitational waves from neutrino mass and dark matter genesis

Abstract

We introduce a model in which the genesis of dark matter (DM) and neutrino masses is associated with a first order phase transition of a scalar singlet field. During the phase transition a source right-handed neutrino (RHN) acquires a spacetime-dependent mass dynamically, a small fraction of which is converted via resonant oscillations into a very weakly mixed dark RHN which decays to a dark matter RHN with the observed relic abundance. Neutrino masses are generated via a traditional two RHN type-I seesaw between a fourth RHN and the source neutrino. The gravitational waves produced during the phase transition have a peak frequency that increases with the DM mass, and are detectable at future gravitational wave interferometers for DM masses above ~ 1 MeV. Since the source RHNs are heavier than the electroweak scale, successful leptogenesis is also attainable.

5 pages, 3 figures, 1 table. Model slightly modified with a new RHN mediator

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Cited by in corpus (8)

• New Sensitivity Curves for Gravitational-Wave Signals from Cosmological Phase Transitions
• Electroweak bubble wall expansion: gravitational waves and baryogenesis in Standard Model-like thermal plasma
• Real scalar phase transitions: a nonperturbative analysis
• Density matrix calculation of the dark matter abundance in the Higgs induced right-handed neutrino mixing model
• Seesaw neutrino dark matter by freeze-out
• Probing intermediate scale Froggatt-Nielsen models at future gravitational wave observatories
• Gravitational waves from first-order phase transitions in Majoron models of neutrino mass
• Gravitational waves from patterns of electroweak symmetry breaking: an effective perspective