Low scale leptogenesis in a hybrid model of the scotogenic type I and III seesaw

Abstract

The scotogenic type I and type III seesaw models are good candidates to explain the existence of neutrino masses and dark matter simultaneously. However, since triplet fermions have SU(2) gauge interaction, they cannot be out of equilibrium before the electroweak symmetry breaking. Thus, leptogenesis seems to be difficult within a framework of the pure type III seesaw model. Some extension seems to be required to solve this fault. A model extended by introducing a singlet fermion could be such a simple example. If the singlet fermion is in the thermal equilibrium even for its extremely small neutrino Yukawa coupling, leptogenesis could be shown to occur successfully for a rather low mass of the singlet fermion. The required mass could be lowered to $10^4$~GeV.

19 pages, 5 figures, several clarifications, added some references, a version accepted for publication

References in corpus (25)

• The Standard Model Higgs boson as the inflaton
• Improved Naturalness with a Heavy Higgs: An Alternative Road to LHC Physics
• Higgs inflation: consistency and generalisations
• Observing the Dark Scalar Doublet and its Impact on the Standard-Model Higgs Boson at Colliders
• Cold Dark Matter, Radiative Neutrino Mass, mu to e gamma, and Neutrinoless Double Beta Decay
• Unitarizing Higgs Inflation
• Type-III see-saw at LHC
• A new viable region of the inert doublet model
• Candidates for Inelastic Dark Matter
• Fermion Triplet Dark Matter and Radiative Neutrino Mass
• Reconciliation of CDM abundance and $\mu \to e\gamma$ in a radiative seesaw model
• The Inert Doublet Model and Inelastic Dark Matter
• Radiative seesaw: Warm dark matter, collider and lepton flavour violating signals
• Positrons and antiprotons from inert doublet model dark matter
• Common Origin of Neutrino Mass, Dark Matter, and Baryogenesis
• Low-Scale Leptogenesis in the Scotogenic Neutrino Mass Model
• TeV scale leptogenesis, inflaton dark matter and neutrino mass in a scotogenic model
• Neutrino masses and CDM in a non-supersymmetric model
• The New $\nu$MSM : Radiative Neutrino Masses, keV-Scale Dark Matter and Viable Leptogenesis with sub-TeV New Physics
• Implications of Flavor Dynamics for Fermion Triplet Leptogenesis
• Leptogenesis and dark matter unified in a non-SUSY model for neutrino masses
• Inflation in a modified radiative seesaw model
• Leptogenesis in a neutrino mass model coupled with inflaton
• Neutrino Masses, Leptogenesis, and Unification in the Absence of Low Energy Supersymmetry
• Pati-Salam unification with a spontaneous CP violation

Cited by in corpus (11)

• Generalizing the Scotogenic model
• Resonant leptogenesis in (2,2) inverse see-saw realisation
• Lowering the scale of fermion triplet leptogenesis with two Higgs doublets
• Inflation connected to the origin of $CP$ violation
• Searches for heavy neutrinos at multi-TeV muon collider : a resonant leptogenesis perspective
• Inflation and DM phenomenology in a scotogenic model extended with a real singlet scalar
• Interplay of inert doublet and vector-like lepton triplet with displaced vertices at the LHC/FCC and MATHUSLA
• Dark Matter candidates in a Type-II radiative neutrino mass model
• Low scale leptogenesis in a model with promising $CP$ structure
• Leptogenesis assisted by scalar decays
• Type-III Scotogenic Model: Inflation, Dark Matter and Collider Phenomenology