A Simple Motivated Completion of the Standard Model below the Planck Scale: Axions and Right-Handed Neutrinos

Abstract

We study a simple Standard Model (SM) extension, which includes three families of right-handed neutrinos with generic non-trivial flavor structure and an economic implementation of the invisible axion idea. We find that in some regions of the parameter space this model accounts for all experimentally confirmed pieces of evidence for physics beyond the SM: it explains neutrino masses (via the type-I see-saw mechanism), dark matter, baryon asymmetry (through leptogenesis), solve the strong CP problem and has a stable electroweak vacuum. The last property may allow us to identify the Higgs field with the inflaton.

8 pages, 4 figures. Phys. Lett. B version: references and discussion on light right-handed neutrinos added

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• Portals into Higgs vacuum stability
• Discovery prospects with the Dark-photons & Axion-Like particles Interferometer
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• ALP-portal majorana dark matter
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• Exploring the flavor structure of quarks and leptons with reinforcement learning
• Axion-Sterile-Neutrino Dark Matter
• Axion Paradigm with Color-Mediated Neutrino Masses
• Introduction to Thermal Field Theory: From First Principles to Applications
• Hearing Higgs with Gravitational Wave Detectors
• Axion and FIMP Dark Matter in a $U(1)$ extension of the Standard Model
• Concurrent Exploration of Axion-Like Particle Interactions with Gauge Bosons at the LHC
• Flavored Peccei-Quinn symmetries in the minimal $\nu$DFSZ model
• Searching for long-lived axion-like particles via displaced vertices at the HL-LHC
• One-loop proton decay from Peccei-Quinn symmetry
• Inflationary scenarios beyond the Standard Model