High-scale leptogenesis with three-loop neutrino mass generation and dark matter

Abstract

We demonstrate a common origin for high-scale leptogenesis and three-loop neutrino mass generation. Specifically we extend the standard model by two real singlet scalars, two singly charged scalars carrying different lepton numbers and two or more singlet fermions with Majorana masses. Our model respects a softly broken lepton number and an exactly conserved $Z_2^{}$ discrete symmetry. Through the lepton-number-violating decays of the real scalars and then the lepton-number-conserving decays of the charged scalars, we can obtain a lepton asymmetry stored in the standard model leptons. This lepton asymmetry can be partially converted to a baryon asymmetry by the sphaleron processes. The interactions for this leptogenesis can also result in a three-loop diagram to generate the neutrino masses. The lightest singlet fermion can keep stable to serve as a dark matter particle.

4 pages, 2 figures

References in corpus (3)

• Leptogenesis
• Derivation of Dark Matter Parity from Lepton Parity
• A Model of Radiative Neutrino Mass: with or without Dark Matter

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• TeV Scale Neutrino Mass Generation, Minimal Inelastic Dark Matter, and High Scale Leptogenesis
• Fermion mass hierarchy and g-2 anomalies in an extended 3HDM Model
• Phenomenological and cosmological implications of a scotogenic three-loop neutrino mass model
• Low-scale leptogenesis and dark matter in a three-loop radiative seesaw model