Inflation and Higgs Phenomenology in a Model Unifying the DFSZ Axion with the Majoron

Abstract

The Two-Higgs-Doublet-Standard Model-Axion-Seesaw-Higgs-Portal inflation (2hdSMASH) model consisting of two Higgs doublets, a Standard Model (SM) singlet complex scalar and three SM singlet right-handed neutrinos can embed axion dark matter, neutrino masses and address inflation. We report on an investigation of the inflationary aspects of 2hdSMASH and its subsequent impact on low energy phenomenology. In particular, we identify inflationary directions for which the parameter values required for successful inflation do not violate perturbative unitarity and boundedness-from-below conditions. By analyzing the renormalization-group flow of the parameters we identify the necessary and sufficient constraints for running all parameters perturbatively and maintaining stability from the electroweak to the PLANCK scale. We observe that stringent constraints arise on the singlet scalar self coupling from inflationary constraints, i.e, ${\lambda }_S\sim 10^{-10}$. Further, we find that all theoretical and experimental constraints are satisfied if the portal couplings are typically in the range $(\frac{v}{v_S})$ and $(\frac{v}{v_S}{)}^2$ (where $v,v_S$ refer to the electroweak and singlet scalar vacuum expectation value respectively). As a consequence, inflation is realized in a variety of field space directions in the effective single field regime. Finally we provide testable benchmark scenarios at colliders.

72 pages, 18 figures, 7 tables, final version accepted for publication in JCAP

References in corpus (22)

• The Standard Model Higgs boson as the inflaton
• BICEP / Keck XIII: Improved Constraints on Primordial Gravitational Waves using Planck, WMAP, and BICEP/Keck Observations through the 2018 Observing Season
• 2020 Global reassessment of the neutrino oscillation picture
• HiggsBounds-5: Testing Higgs Sectors in the LHC 13 TeV Era
• Physics potential of the International Axion Observatory (IAXO)
• Unitarizing Higgs Inflation
• Unifying inflation with the axion, dark matter, baryogenesis and the seesaw mechanism
• The Quest for an Intermediate-Scale Accidental Axion and Further ALPs
• Towards B -> X_s gamma at the NNLO in QCD without interpolation in m_c
• Enhanced Supernova Axion Emission and its Implications
• Gravitational wave production from preheating: parameter dependence
• Exploring Two Higgs Doublet Models Through Higgs Production
• High-scale validity of a two-Higgs doublet scenario: a study including LHC data
• Inflation and Dark Matter in the Inert Doublet Model
• Revealing the Cosmic History with Gravitational Waves
• Higgs inflation and suppression of axion isocurvature perturbation
• Ruling out light axions: the writing is on the wall
• Primordial gravitational waves in a minimal model of particle physics and cosmology
• HL-LHC and ILC sensitivities in the hunt for heavy Higgs bosons
• Phenomenology of a Supersymmetric Model Inspired by Inflation
• High Scale Validity of the DFSZ Axion Model with Precision
• Radiative Corrections as the Origin of Spontaneous Symmetry Breaking

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• One-loop proton decay from Peccei-Quinn symmetry
• Neutrino Mass Hierarchy and Axion--Lepton Couplings in a Minimal Flavored $\nu$KSVZ Model