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Heavy Majorana Neutrinos and Baryogenesis

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arxiv hep-ph/9812256 v3 pith:ORF5AFY5 submitted 1998-12-04 hep-ph astro-phhep-ex

Heavy Majorana Neutrinos and Baryogenesis

classification hep-ph astro-phhep-ex
keywords heavymajorananeutrinosapproachbaryogenesisdecaysresummationboltzmann
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The scenario of baryogenesis through leptogenesis is reviewed in models involving heavy Majorana neutrinos. The various mechanisms of CP violation occurring in the out-of-equilibrium lepton-number-violating decays of heavy Majorana neutrinos are studied within a resummation approach to unstable-particle mixing. It is explicitly demonstrated how the resummation approach preserves crucial field-theoretic properties such as unitarity and CPT invariance. Predictions of representative scenarios are presented after solving numerically the Boltzmann equations describing the thermodynamic evolution of the Universe. The phenomenological consequences of loop effects of heavy Majorana neutrinos on low-energy observables, such as lepton-flavour and/or lepton-number non-conservation in $\tau$ and $Z$-boson decays and electron electric dipole moment, are discussed.

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Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. A Model of Annihilogenesis

    hep-ph 2026-04 unverdicted novelty 7.0

    An explicit model generates the observed baryon asymmetry via annihilogenesis of right-handed neutrinos confined in false-vacuum pockets during a strong first-order phase transition, relaxing the usual light-neutrino-...

  2. Resonant electromagnetic leptogenesis with coherent heavy-neutrino evolution

    hep-ph 2026-03 conditional novelty 6.0

    Resonant electromagnetic leptogenesis from TeV-scale neutrino dipole operators can reach the observed baryon asymmetry, but only with tuned mass splittings and diluted overproduction.

  3. Right-Handed Neutrino Production by an Axion-like Inflaton: Implications for Leptogenesis

    hep-ph 2026-07 conditional novelty 5.0

    A derivative-coupled axion-like inflaton can produce the heavy right-handed neutrinos whose decays explain the observed baryon asymmetry, with the required CP violation lower in the prompt-decay regime.

  4. Resonant electromagnetic leptogenesis with coherent heavy-neutrino evolution

    hep-ph 2026-03 conditional novelty 5.0

    A gauge-invariant EFT calculation shows resonant, dipole-only leptogenesis can match or exceed the observed baryon asymmetry—but only with a hand-set mass degeneracy, overproduction in the oscillation-motivated region...

  5. Probing TeV-Scale Inverse-Seesaw Leptogenesis and Majorana Dark Matter in $U(1)_{B-L}$ Models at Multi-TeV Muon Colliders

    hep-ph 2026-06 unverdicted novelty 4.0

    Inverse-seesaw U(1)_{B-L} model correlates leptogenesis, Majorana DM relic density, and neutrino masses with collider signatures in dilepton and single-lepton channels.

  6. Light neutrinos, Dark matter and leptogenesis near electroweak scale and $Z_4$ symmetry

    hep-ph 2026-04 unverdicted novelty 4.0

    Z4-symmetric Type I seesaw fits neutrino data with minimal parameters and enables freeze-in dark matter plus resonant leptogenesis via soft symmetry breaking.