2020/01/31 by Neil D. Barrie, Akio Sugamoto, Tatsu Takeuchi +1 · 10 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Higgs boson #Higgs field #Inflation (cosmology) #Leptogenesis #Lepton #Lepton number #Particle physics theoretical and experimental studies #Planck #Scalar (mathematics) #hep-ph
paper · pdf · doi:10.1007/jhep08(2020)072
published in Journal of High Energy Physics 2020(8) (Springer Nature) · 40 pages, 6 figures, minor revisions for consistency with published version
openalex created_date 2020/01/30 · openalex publication_date 2020/08/01 · arxiv created 2020/11/08 · arxiv updated 2020/11/10 · openalex updated_date 2026/08/06
A bstract We consider the introduction of a complex scalar field carrying a global lepton number charge to the Standard Model and the Higgs inflation framework. The conditions are investigated under which this model can simultaneously ensure Higgs vacuum stability up to the Planck scale, successful inflation, non-thermal Leptogenesis via the pendulum mechanism, and light neutrino masses. These can be simultaneously achieved when the scalar lepton is minimally coupled to gravity, that is, when standard Higgs inflation and reheating proceed without the interference of the additional scalar degrees of freedom. If the scalar lepton also has a non-minimal coupling to gravity, a multi-field inflation scenario is induced, with interesting interplay between the successful inflation constraints and those from vacuum stability and Leptogenesis. The parameter region that can simultaneously achieve the above goals is explored.