Type II Seesaw Leptogenesis in a Majoron background

2025/06/29 by Berbig, Maximilian · 2 citations
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.2506.23290

Abstract

We discuss spontaneous Leptogenesis in the Type II Seesaw model of neutrino masses featuring an electroweak triplet scalar T in a coherent pseudo Nambu-Goldstone boson (pNGB) background. In the "wash-in" scenario the inverse decays of Higgs bosons to T generate a chemical potential for the triplet that is then transmitted to the lepton sector via the leptonic decays of T. Our mechanism works with a single triplet that can be as light as 1 TeV, and has a vacuum expectation value v_T in the window O(1~keV) m_j >O(1~μeV).

Citations

• Kinetic Fragmentation of the QCD Axion on the Lattice
• Universal lower bound on the axion decay constant from free streaming effects
• About electroweak domain walls in Majoron models
• Turning a negative neutrino mass into a positive optical depth
• Cosmology in Extended Parameter Space with DESI Data Release 2 Baryon Acoustic Oscillations: A 2σ+ Detection of Nonzero Neutrino Masses with an Update on Dynamical Dark Energy and Lensing Anomaly
• A New Source for (QCD) Axion Dark Matter Production: Curvature-Induced
• Flipped Rotating Axion Non-minimally Coupled to Gravity: Baryogenesis and Dark Matter
• Uniting the Observed Dynamical Dark Energy Preference with the Discrepancies in Ω_m and H₀ Across Cosmological Probes
• Massive neutrinos and cosmic composition
• Inflation models with Peccei-Quinn symmetry and axion kinetic misalignment
• New Laboratory Constraints on Neutrinophilic Mediators
• The 2024 BBN baryon abundance update
• Type-II Seesaw Leptogenesis along the Ridge
• A Call for New Physics : The Muon Anomalous Magnetic Moment and Lepton Flavor Violation
• A new mechanism for baryogenesis
• Topology of cosmic domains and strings

Cited by

• Minimal A4 Type-II Seesaw Realization of Testable Neutrino Mass Sum Rules
• Spontaneous Leptogenesis in Type I Seesaw

Related

• Testable Leptogenesis in extended Standard Model
• Leptogenesis with triplet scalars at electroweak scale
• Spontaneous Leptogenesis in Type I Seesaw
• Leptogenesis in Type Ib seesaw models
• Origin of CP violation for leptogenesis in seesaw