Neutrino phenomenology from leptogenesis

Abstract

Assuming a type-I seesaw mechanism for neutrino mass generation and invoking a baryogengesis via leptogenesis scenario, we consider a reasonable hierarchical structure for Dirac neutrino mass matrix, similar to up-type quark mass matrix. These hypotheses imply a relevant connection between high scale CP violation and low energy one. By requiring a compact heavy neutrino mass spectrum, which allows to circumvent Davidson-Ibarra limit, one can obtain an efficient leptogenesis restricting the allowed region for low energy neutrino parameters. Once the oscillating parameters are taken inside a $3\sigma$ range, through the numerical resolution of the leptogenesis Boltzmann equations one gets the following allowed intervals for the lightest neutrino mass and the Dirac CP phase: $-0.90\pi <\delta <-0.75\pi$ and $m_1\sim (0.002-0.004)$ eV.

arXiv comment15 pages, 2 figures

References in corpus (35)

• Planck 2015 results. XIII. Cosmological parameters
• A lower bound on the right-handed neutrino mass from leptogenesis
• Status of neutrino oscillations 2018: first hint for normal mass ordering and improved CP sensitivity
• Updated fit to three neutrino mixing: exploring the accelerator-reactor complementarity
• Predictive Neutrino Spectrum in Minimal $SO(10)$ Grand Unification
• Cosmological Sign of Neutrino CP Violation
• Flavour Matters in Leptogenesis
• Global constraints on absolute neutrino masses and their ordering
• Improved limit on neutrinoless double beta decay of ${}^{76}$Ge from GERDA Phase II
• A Systematic SO(10) Operator Analysis for Fermion Masses
• Inverse Seesaw Neutrino Signatures at LHC and ILC
• Connecting Low Energy Leptonic CP-violation to Leptogenesis
• Leptogenesis, CP violation and neutrino data: What can we learn?
• A Bridge between CP violation at Low Energies and Leptogenesis
• Probing the seesaw mechanism with neutrino data and leptogenesis
• Minimal Scenarios for Leptogenesis and CP Violation
• On the Connection of Leptogenesis with Low Energy CP Violation and LFV Charged Lepton Decays
• Fermion masses and mixings in SO(10) models and the neutrino challenge to supersymmetric grand unified theories
• A new bridge between leptonic CP violation and leptogenesis
• Naturalness, Vacuum Stability and Leptogenesis in the Minimal Seesaw Model
• Bounds on heavy Majorana neutrinos in type-I seesaw and implications for collider searches
• A simple connection between neutrino oscillation and leptogenesis
• Probing Leptogenesis
• Observable Consequences of Partially Degenerate Leptogenesis
• Leptogenesis and neutrino parameters
• Baryogenesis via leptogenesis in SO(10) models
• Leptogenesis with Single Right-Handed Neutrino Dominance
• Leptogenesis and Yukawa textures
• Squeezing out predictions with leptogenesis from SO(10)
• Neutrino masses and the baryon asymmetry
• Connecting Leptogenesis to CP Violation in Neutrino Mixings in a Tri-bimaximal Mixing model
• Leptogenesis and the Small-Angle MSW Solution
• Leptogenesis in Unified Theories with Type II See-Saw
• Leptogenesis in a $\Delta (27)\times SO(10)$ SUSY GUT
• A neutrino mass-mixing sum rule from SO(10) and neutrinoless double beta decay