Baryon Asymmetry of the Universe in the NuMSM

Abstract

We perform a detailed analysis of baryon asymmetry generation in the NuMSM (an extension of the Standard Model by three singlet Majorana fermions with masses below the Fermi scale). Fixing a number of parameters of the NuMSM by the neutrino oscillation data, we determine the remaining domain of the parameter space from the requirement of successful baryogenesis. We derive, in particular, the constraints on the mass splitting of a pair of singlet fermions, and on the strength of their coupling to ordinary leptons, essential for searches of these particles in rare decays of mesons and in beam-dump experiments with intensive proton beams.

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• An Extended Analysis of Heavy Neutral Leptons during Big Bang Nucleosynthesis
• Probing leptogenesis with GeV-scale sterile neutrinos at LHCb and BELLE II
• Uniting low-scale leptogeneses
• Reinterpreting the ATLAS bounds on heavy neutral leptons in a realistic neutrino oscillation model
• Sterile Neutrino Dark Matter and Low Scale Leptogenesis from a Charged Scalar
• Strong Washout Approximation to Resonant Leptogenesis
• Physics with Far Detectors at Future Lepton Colliders
• Nearly degenerate heavy sterile neutrinos in cascade decay: mixing and oscillations
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• Coherent Flavour Oscillation and CP Violating Parameter in Thermal Resonant Leptogenesis
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• Perspectives for tests of neutrino mass generation at the GeV scale: Experimental reach versus theoretical predictions
• Leptogenesis in crossing and runaway regimes
• Space-time evolution of heavy sterile neutrinos in cascade decays
• Baryogenesis and Dark Matter from Freeze-In
• Baryon asymmetry from leptogenesis with four zero neutrino Yukawa textures
• Probing baryon asymmetry of the Universe at LHC and SHiP
• On the Minimal Mixing of Heavy Neutrinos
• Freeze-in and freeze-out generation of lepton asymmetries after baryogenesis in the $\nu$MSM
• Probing the Nature of Heavy Neutral Leptons in Direct Searches and Neutrinoless Double Beta Decay
• Inverse Seesaw, dark matter and the Hubble tension
• Robustness of ARS Leptogenesis in Scalar Extensions
• Reconciling resonant leptogenesis and baryogenesis via neutrino oscillations
• Search for GeV-scale sterile neutrinos responsible for active neutrino oscillations and baryon asymmetry of the Universe
• The Forward Physics Facility at the High-Luminosity LHC