Charged lepton flavour violating radiative decays ℓ i → ℓ j + γ in see-saw models with A 4 symmetry

2009/11/30 by Claudia Hagedorn, C. Hagedorn, Emiliano Molinaro +3 · 25 citations
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Flavour #Geometry #Lepton #Neutrino Physics Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Radiative transfer #Symmetry (geometry) #hep-ph

paper · pdf · doi:10.1007/jhep02(2010)047

published in Journal of High Energy Physics 2010(2) (Springer Nature) · Results unchanged, minor improvements made; version accepted for publication in JHEP

arxiv created 2010/01/15 · openalex publication_date 2010/02/01 · arxiv updated 2014/11/20 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

The charged lepton flavour violating (LFV) radiative decays, μ→ e+γ, τ→ μ+γ and τ→ e +γ are investigated in a class of supersymmetric A₄ models with three heavy right-handed (RH) Majorana neutrinos, in which the lepton (neutrino) mixing is predicted to leading order (LO) to be tri-bimaximal. The light neutrino masses are generated via the type I see-saw mechanism. The analysis is done within the framework of the minimal supergravity (mSUGRA) scenario, which provides flavour universal boundary conditions at the scale of grand unification M_X ≈ 2 × 10¹⁶ GeV. Detailed predictions for the rates of the three LFV decays are obtained in two explicit realisations of the A₄ models due to Altarelli and Feruglio and Altarelli and Meloni, respectively.

Citations

• Review of Particle Physics
• A bottom-up analysis of horizontal symmetry
• Determining Horizontal Symmetry from Neutrino Mixing
• Physics at Super B Factory
• Model of Geometric Neutrino Mixing
• Status of Tri/Bi-Maximal Neutrino Mixing
• Symmetries and generalisations of tri-bimaximal neutrino mixing
• A4 family symmetry and quark–lepton unification
• Majorana CP-violating phases, RG running of neutrino mixing parameters and charged lepton flavour violating decays
• Fermion masses and mixings in a S4 based model
• Tri-bimaximal neutrino mixing from A4 and θ13∼θC
• Probing neutrino masses with CMB lensing extraction
• Renormalization of the neutrino mass operator
• ISAJET 7.37: A Monte Carlo Event Generator for pp, pp, and e⁺e^- Interactions
• Three-flavour neutrino oscillation update
• Searches for Lepton Flavor Violation in the Decaysτ±→e±γandτ±→μ±γ
• A simplest A4 model for Tri-Bimaximal neutrino mixing
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Status of the GERDA experiment aimed to search for neutrinoless double beta decay of 76Ge
• Degenerate neutrinos from a supersymmetric A₄ model

Cited by

• The impact of flavour changing neutral gauge bosons on B → X_sγ