Two radiative inverse seesaw models, dark matter, and baryogenesis

Abstract

The inverse seesaw mechanism allows the neutrino masses to be generated by new physics at an experimentally accessible scale, even with O(1) Yukawa couplings. In the inverse seesaw scenario, the smallness of neutrino masses is linked to the smallness of a lepton number violating parameter. This parameter may arise radiatively. In this paper, we study the cosmological implications of two contrasting radiative inverse seesaw models, one due to Ma and the other to Law and McDonald. The former features spontaneous, the latter explicit lepton number violation. First, we examine the effect of the lepton-number violating interactions introduced in these models on the baryon asymmetry of the universe. We investigate under what conditions a pre-existing baryon asymmetry does not get washed out. While both models allow a baryon asymmetry to survive only once the temperature has dropped below the mass of their heaviest fields, the Ma model can create the baryon asymmetry through resonant leptogenesis. Then we investigate the viability of the dark matter candidates arising within these models, and explore the prospects for direct detection. We find that the Law/McDonald model allows a simple dark matter scenario similar to the Higgs portal, while in the Ma model the simplest cold dark matter scenario would tend to overclose the universe.

32 pages, 11 figures. V2: References added, small corrections, no change in results

References in corpus (30)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Planck 2013 results. XVI. Cosmological parameters
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Three Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Polarization Analysis
• Dark Matter Results from 225 Live Days of XENON100 Data
• Gauge Singlet Scalars as Cold Dark Matter
• Precise Relic WIMP Abundance and its Impact on Searches for Dark Matter Annihilation
• LHC Phenomenology of an Extended Standard Model with a Real Scalar Singlet
• Singlet Higgs Phenomenology and the Electroweak Phase Transition
• Sterile neutrinos, dark matter, and the pulsar velocities in models with a Higgs singlet
• Low energy effects of neutrino masses
• Dark-matter sterile neutrinos in models with a gauge singlet in the Higgs sector
• Non-Abelian Dark Sectors and Their Collider Signatures
• Effects of new leptons in Electroweak Precision Data
• Non-Standard Neutrino Interactions with Matter from Physics Beyond the Standard Model
• The universal Higgs fit
• Sterile Neutrinos as the Origin of Dark and Baryonic Matter
• Hylogenesis: A Unified Origin for Baryonic Visible Matter and Antibaryonic Dark Matter
• Updated Global Analysis of Higgs Couplings
• Non-unitary neutrino mixing and CP violation in the minimal inverse seesaw model
• Probing non-unitary mixing and CP-violation at a Neutrino Factory
• Radiative Inverse Seesaw: Verifiable New Mechanism of Neutrino Mass
• Search for a standard-model-like Higgs boson with a mass in the range 145 to 1000 GeV at the LHC
• Leptogenesis with TeV Scale Inverse Seesaw in SO(10)
• Sterile neutrinos: direct mixing effects versus induced mass matrix of active neutrinos
• Generalized Inverse Seesaws
• Sterile neutrinos
• Minimal Dynamical Inverse See Saw
• Origin of matter in the universe

Cited by in corpus (13)

• From the trees to the forest: a review of radiative neutrino mass models
• The Phenomenology of Right Handed Neutrinos
• High Scale Electroweak Phase Transition: Baryogenesis & Symmetry Non-Restoration
• A Class of Inert N-tuplet Models with Radiative Neutrino Mass and Dark Matter
• Probing Exotic Fermions from a Seesaw/Radiative Model at the LHC
• Dirac-Phase Thermal Leptogenesis in the extended Type-I Seesaw Model
• Dark Radiative Inverse Seesaw Mechanism
• Minimal model for the fermion flavor structure, mass hierarchy, dark matter, leptogenesis, and the electron and muon anomalous magnetic moments
• Dark matter as the origin of neutrino mass in the inverse seesaw mechanism
• A model realizing inverse seesaw and resonant leptogenesis
• Dark linear seesaw mechanism
• Some Phenomenologies of a Simple Scotogenic Inverse Seesaw Model
• Exploring the feasibility of the charged lepton flavor violating decay $\mu \to e+\gamma$ in inverse and linear seesaw mechanisms with $A_4$ flavour symmetry