Electroweak naturalness in the three-flavor type I seesaw model and implications for leptogenesis

2015/02/28 by J. Clarke, Jackson D. Clarke, R. Foot +2 · 6 citations
Physics and Astronomy · #Baryogenesis #Dark Matter and Cosmic Phenomena #Electroweak interaction #Leptogenesis #Lepton #Naturalness #Neutrino #Neutrino Physics Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Seesaw mechanism #Seesaw molecular geometry #Type (biology) #hep-ph

paper · pdf · doi:10.1103/physrevd.91.073009

published as Phys. Rev. D 91, 073009 (2015) · 4 pages, 3 figures, v2 minor changes

openalex publication_date 2015/04/10 · arxiv created 2015/04/13 · arxiv updated 2015/04/16 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04

Abstract

In the type I seesaw model, the naturalness requirement that corrections to the electroweak \ensuremathμ parameter not exceed 1 TeV results in a rough bound on the lightest right-handed neutrino mass, M_N₁\ensuremath\lesssim3\ifmmode×\else\texttimes\fi10⁷ GeV. In this paper we derive generic bounds applicable in any three-flavor type I seesaw model. We find M_N₁\ensuremath\lesssim4\ifmmode×\else\texttimes\fi10⁷ GeV and M_N₂\ensuremath\lesssim7\ifmmode×\else\texttimes\fi10⁷ GeV. In the limit of one massless neutrino, there is no naturalness bound on M_N₃ in the Poincar'e protected decoupling limit. Our results confirm that no type I seesaw model can explain the observed neutrino masses and baryogenesis via hierarchical (N₁-, N₂-, or N₃-dominated) thermal leptogenesis while remaining completely natural.

Citations

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• NEUTRINO MASSES, LEPTON FLAVOR MIXING AND LEPTOGENESIS IN THE MINIMAL SEESAW MODEL
• Flavor dependence ofCPasymmetries and thermal leptogenesis with strong right-handed neutrino mass hierarchy
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC

Cited by

• Naturalness, vacuum stability, and leptogenesis in the minimal seesaw model
• A Further Study of the Frampton-Glashow-Yanagida Model for Neutrino Masses, Flavor Mixing and Baryon Number Asymmetry
• Natural leptogenesis and neutrino masses with two Higgs doublets
• Maximal zero textures in Linear and Inverse seesaw
• Low-scale leptogenesis with minimal lepton flavor violation
• Low scale left-right symmetry and naturally small neutrino mass
• Mixed Inert scalar triplet dark matter, radiative neutrino masses and leptogenesis

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• How to avoid unnatural hierarchical thermal leptogenesis
• Natural leptogenesis and neutrino masses with two Higgs doublets
• Insights on the Scale of Leptogenesis from Neutrino Masses and Neutrinoless Double-Beta Decay
• Parameter space for testable leptogenesis
• An effective theory for Leptogenesis