Radiative Symmetry Breaking and Gravitational Waves in a Zee-Babu Model
Published:Dec 27, 2025 10:29
•1 min read
•ArXiv
Analysis
This paper proposes a classically scale-invariant extension of the Zee-Babu model, a model for neutrino masses, incorporating a U(1)B-L gauge symmetry and a Z2 symmetry to provide a dark matter candidate. The key feature is radiative symmetry breaking, where the breaking scale is linked to neutrino mass generation, lepton flavor violation, and dark matter phenomenology. The paper's significance lies in its potential to be tested through gravitational wave detection, offering a concrete way to probe classical scale invariance and its connection to fundamental particle physics.
Key Takeaways
- •Proposes a classically scale-invariant Zee-Babu model.
- •Radiative symmetry breaking links the breaking scale to neutrino masses, lepton flavor violation, and dark matter.
- •Predicts a strong first-order phase transition.
- •Gravitational waves from this phase transition are potentially detectable by LISA and BBO.
- •Provides a testable framework for classical scale invariance.
Reference
“The scenario can simultaneously accommodate the observed neutrino masses and mixings, an appropriately low lepton flavour violation and the observed dark matter relic density for 10 TeV ≲ vBL ≲ 55 TeV. In addition, the very radiative nature of the set-up signals a strong first order phase transition in the presence of a non-zero temperature.”