Baryogenesis from L-violating Higgs-doublet decay in the density-matrix formalism

Abstract

We compute in the density-matrix formalism the baryon asymmetry generated by the decay of the Higgs doublet into a right-handed (RH) neutrino and a Standard Model lepton. The emphasis is put on the baryon asymmetry produced by the total lepton-number violating decay. From the derivation of the corresponding evolution equations, and from their integration, we find that this contribution is fully relevant for large parts of the parameter space. This confirms the results found recently in the CP-violating decay formalism with thermal corrections and shows in particular that the lepton-number violating processes are important not only for high-scale leptogenesis but also when the RH-neutrino masses are in the GeV range. For large values of the Yukawa couplings, we also find that the strong washout is generically much milder for this total lepton-number violating part than for the usual RH-neutrino oscillation flavour part.

12 pages, 10 figures

References in corpus (8)

• The nuMSM, leptonic asymmetries, and properties of singlet fermions
• Flavour Covariant Transport Equations: an Application to Resonant Leptogenesis
• Thermal production of relativistic Majorana neutrinos: Strong enhancement by multiple soft scattering
• Baryon Asymmetry of the Universe in the NuMSM
• Kadanoff-Baym Approach to Flavour Mixing and Oscillations in Resonant Leptogenesis
• Probing leptogenesis with GeV-scale sterile neutrinos at LHCb and BELLE II
• GeV-scale hot sterile neutrino oscillations: a derivation of evolution equations
• Fermion number violating effects in low scale leptogenesis

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