Initial condition for baryogenesis via neutrino oscillation

Abstract

We consider a baryogenesis scenario via the oscillation of right-handed neutrinos with Majorana masses of the order of GeV, which are also responsible for neutrino masses by the seesaw mechanism. We study how the initial condition alters the prediction of the present baryon asymmetry by this mechanism. It is usually assumed that the abundance of right-handed neutrinos is zero after the reheating of the inflationary universe and they are produced in scattering processes by the renomalizable Yukawa interaction. However, the higher-dimensional operator with right-handed neutrinos may provide an additional production which is most effective at the reheating epoch. It is shown that such an initial abundance of right-handed neutrinos can significantly modify the prediction when the strong washout of the asymmetry is absent. This leads to the parameter space of the model for the successful baryogenesis being enlarged.

24 pages, 35 figures, v2; correspond to published version

References in corpus (18)

• Leptogenesis
• Updated fit to three neutrino mixing: exploring the accelerator-reactor complementarity
• The Sphaleron Rate in the Minimal Standard Model
• Flavour Matters in Leptogenesis
• A facility to Search for Hidden Particles (SHiP) at the CERN SPS
• Sterile Neutrinos as the Origin of Dark and Baryonic Matter
• The nuMSM, leptonic asymmetries, and properties of singlet fermions
• Sterile neutrino dark matter as a consequence of nuMSM-induced lepton asymmetry
• Where to find a dark matter sterile neutrino?
• Sensitivity of Next-Generation Tritium Beta-Decay Experiments for keV-Scale Sterile Neutrinos
• Baryon Asymmetry of the Universe in the NuMSM
• Mixing of Active and Sterile Neutrinos
• Probing leptogenesis with GeV-scale sterile neutrinos at LHCb and BELLE II
• GeV-scale hot sterile neutrino oscillations: a derivation of evolution equations
• Baryogenesis from L-violating Higgs-doublet decay in the density-matrix formalism
• Right-handed neutrino production rate at T > 160 GeV
• Fermion number violating effects in low scale leptogenesis
• Wavelet Approach to Search for Sterile Neutrinos in Tritium $\beta$-Decay Spectra

Cited by in corpus (22)

• Long-Lived Particles at the Energy Frontier: The MATHUSLA Physics Case
• The Present and Future Status of Heavy Neutral Leptons
• Probing Leptogenesis at Future Colliders
• Uniting low-scale leptogeneses
• Mapping the viable parameter space for testable leptogenesis
• GeV-scale hot sterile neutrino oscillations: a numerical solution
• Parameter space of baryogenesis in the $\nu$MSM
• Bounds on right-handed neutrino parameters from observable leptogenesis
• Flavoured Resonant Leptogenesis at Sub-TeV Scales
• When FIMPs Decay into Neutrinos: The $N_{\mathrm{eff}}$ Story
• ULYSSES, Universal LeptogeneSiS Equation Solver: version 2
• Baryogenesis and Dark Matter from Freeze-In
• Tests of Low-Scale Leptogenesis in Charged Lepton Flavour Violation Experiments
• Radiative Axion Inflation
• Low-Scale Leptogenesis with Low-Energy Dirac CP-Violation
• Probing baryon asymmetry of the Universe at LHC and SHiP
• Freeze-in and freeze-out generation of lepton asymmetries after baryogenesis in the $\nu$MSM
• Reconciling resonant leptogenesis and baryogenesis via neutrino oscillations
• Sterile neutrino rates for general $M$, $T$, $\mu$, $k$: review of a theoretical framework
• Freeze-in Leptogenesis via Dark-Matter Oscillations
• Probing the Seesaw Mechanism and Leptogenesis with the International Linear Collider
• Impact of dim-6 $\nu$SMEFT operators on low-scale leptogenesis