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Dynamical scoto-seesaw mechanism with gauged $B-L$
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abstract
We propose a dynamical scoto-seesaw mechanism using a gauged $B-L$ symmetry. Dark matter is reconciled with neutrino mass generation, in such a way that the atmospheric scale arises \textit{a la seesaw}, while the solar scale is \textit{scotogenic}, arising radiatively from the exchange of ``dark'' states. This way we ``explain'' the solar-to-atmospheric scale ratio. The TeV-scale seesaw mediator and the two dark fermions carry different $B-L$ charges. Dark matter stability follows from the residual matter parity that survives $B-L$ breaking. Besides having collider tests, the model implies sizeable charged lepton flavour violating (cLFV) phenomena, including Goldstone boson emission processes.
Forward citations
Cited by 2 Pith papers
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Multi-component Dark Matter in a Novel Three-Loop Inverse Scotogenic Seesaw Model
A three-loop inverse scotogenic seesaw with residual Z2⊗Z3 yields viable multi-component dark matter and approximate resonant leptogenesis while fitting neutrino and CLFV bounds.
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Gravitational wave signatures of dark sector portal leptogenesis
A Z2-odd dark sector with a heavy fermion and two scalars enables TeV-scale leptogenesis and produces LISA-visible gravitational waves from a strong electroweak phase transition.
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