Thermal leptogenesis in a TeV scale model for neutrino masses

Abstract

It is known that the radiative neutrino mass model proposed by Ma could be a consistent framework for dark matter, leptogenesis and suppressed lepton flavor violation if a neutral component of the inert doublet is identified as dark matter and the right-handed neutrinos are of O(10^7) GeV or more. In the same model we explore another scenario such that right-handed neutrinos are in TeV regions and their lightest one is dark matter. It is shown that this scenario requires fine mass degeneracy to generate the appropriate baryon number asymmetry as in the case of resonant leptogenesis. As long as we impose the model to induce the baryon number asymmetry on the basis of thermal leptogenesis, we find that dark matter abundance can not be explained. If this scenario is adopted, the model has to be extended to include some new mechanism to explain it.

21 pages, 3 figures, v2:large improvement by the analysis of Boltzmann equations, title changed, v3: abstract rewritten, some references added, accepted version for publication

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• Leptogenesis and dark matter detection in a TeV scale neutrino mass model with inverted mass hierarchy
• Natural leptogenesis and neutrino masses with two Higgs doublets
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• Dark matter, neutrino masses and high scale validity of an inert Higgs doublet model
• Scalar dark matter and fermion coannihilations in the radiative seesaw model
• Shining Light on the Scotogenic Model: Interplay of Colliders and Cosmology
• Kadanoff-Baym approach to the thermal resonant leptogenesis
• Coherent Flavour Oscillation and CP Violating Parameter in Thermal Resonant Leptogenesis
• Inflation in a modified radiative seesaw model
• Dark matter stability and one-loop neutrino mass generation based on Peccei-Quinn symmetry
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• Low scale leptogenesis in a hybrid model of the scotogenic type I and III seesaw
• Resonant leptogenesis in (2,2) inverse see-saw realisation
• Inflation due to a non-minimal coupling of singlet scalars in the radiative seesaw model
• Leptogenesis in a neutrino mass model coupled with inflaton
• Parametrization of the Yukawa matrix in the scotogenic model and single-zero textures of the neutrino mass matrix
• Searches for heavy neutrinos at multi-TeV muon collider : a resonant leptogenesis perspective
• An extension of the SM based on effective Peccei-Quinn Symmetry
• Inflation and DM phenomenology in a scotogenic model extended with a real singlet scalar
• Radiative neutrino mass model with degenerate right-handed neutrinos
• Possible roles of Peccei-Quinn symmetry in an effective low energy model
• Dark matter as the source of neutrino mass: theory overview and experimental prospects
• Symmetry restoration due to preheating and lepton number asymmetry