Non-thermal production of lepton asymmetry and dark matter in minimal seesaw with right handed neutrino induced Higgs potential

Abstract

Within Type-I seesaw mechanism, Higgs mass can be dynamically generated via quantum effects of the right handed neutrinos assuming the potential is nearly conformal at the Ultra-Violet. The scenario, named as the "Neutrino Option" allows RH neutrino mass scale upto $M\lesssim$ $10^7$ GeV to be consistent with light neutrino masses, mixing and Higgs mass. Therefore, it is not consistent with standard hierarchical thermal leptogenesis. Parameter space for thermal resonant leptogenesis is highly constrained in this model. We point out that non-thermal pair production of RH neutrinos from inflaton decay corresponds in general to a mild degree of resonance in the CP asymmetry parameter and allows RH mass scale to be smaller more than by an order of magnitude than the thermal strong resonance case. Within the similar parameter space of thermal leptogenesis, RH neutrinos can also be produced from inflaton decay along with a Dark Matter having mass $M_{\mathrm{DM}}\lesssim$ 320 MeV. The main constraint in the latter scenario comes from the Ly$\alpha$ constraints on Dark Matter free streaming. We show in addition, that the Neutrino Option introduces a 'phantom window' for the RH mass scale, in which contrary to the usual scenarios, CP asymmetry parameter for leptogenesis decreases with the increase of the RH mass scale and minimally fine-tuned seesaw models naturally exhibit this `phantom window'.

26 pages, 6 figures; matches the version published in JCAP

References in corpus (19)

• Leptogenesis
• Updated fit to three neutrino mixing: exploring the accelerator-reactor complementarity
• Reheating in Inflationary Cosmology: Theory and Applications
• Flavour Matters in Leptogenesis
• Flavour Covariant Transport Equations: an Application to Resonant Leptogenesis
• Inflaton Decay in Supergravity
• Measurement of neutrino and antineutrino oscillations by the T2K experiment including a new additional sample of ${\nu }_e$ interactions at the far detector
• Determining neutrino oscillation parameters from atmospheric muon neutrino disappearance with three years of IceCube DeepCore data
• Kadanoff-Baym Approach to Flavour Mixing and Oscillations in Resonant Leptogenesis
• Electroweak naturalness in three-flavour Type I see-saw and implications for leptogenesis
• Nonthermal Two Component Dark Matter Model for Fermi-LAT $\gamma$-ray excess and 3.55 keV X-ray Line
• Effects of reheating on leptogenesis
• Measurement of forward $W\to e\nu$ production in $pp$ collisions at $\sqrt{s}=8$TeV
• Gravitino Dark Matter from Inflaton Decay
• Calculation of Momentum Distribution Function of a Non-thermal Fermionic Dark Matter
• Free streaming in mixed dark matter
• Cosmic Inflation in Minimal $U(1{)}_{B-L}$ Model: Implications for (Non) Thermal Dark Matter and Leptogenesis
• Spontaneous Non-thermal Leptogenesis in High-scale Inflation Models
• Baryon asymmetry via leptogenesis in a neutrino mass model with complex scaling

Cited by in corpus (10)

• Baryogenesis from ultralight primordial black holes and strong gravitational waves from cosmic strings
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• Testing Super-Heavy Dark Matter from Primordial Black Holes with Gravitational Waves
• Non-thermal leptogenesis and UV freeze-in of dark matter: impact of inflationary reheating
• Dark Matter and Leptogenesis from Gravitational Production
• Cogenesis of Baryon Asymmetry and Gravitational Dark Matter from Primordial Black Holes
• Dark Matter in the Type Ib Seesaw Model
• Non-thermal Hot Dark Matter from Inflaton/Moduli Decay: The Momentum Distribution and Relaxing the Cosmological Mass Bound
• Leptogenesis in an anomaly-free $\mathrm{U}(1)$ extension with higher-dimensional operators
• Gravitational wave complementarity and impact of NANOGrav data on gravitational leptogenesis: cosmic strings