Linking resonant leptogenesis with dynamics of the inverse seesaw theory with $ A_{4} $ flavor symmetry

TL;DR

This paper explores how resonant leptogenesis can occur at low energies within an inverse seesaw model that incorporates $A_4$ flavor symmetry, linking neutrino masses, mixings, and lepton asymmetry generation.

Contribution

It demonstrates the feasibility of resonant leptogenesis at TeV scales in an $A_4$ symmetric inverse seesaw framework, connecting neutrino properties with baryon asymmetry.

Findings

Resonant leptogenesis can occur at energies as low as 1 TeV.

The model links neutrino masses, mixings, and leptogenesis through shared heavy neutrino origins.

Analysis suggests the model favors weak or strong washout regimes.

Abstract

In this paper, we analyse resonant leptogenesis in a low scale inverse seesaw model with $A_4$ flavor symmetry, in a model we explored earlier to explain light neutrino masses and mixings, and also charged lepton flavor violating decay $\mu\rightarrow e\gamma$. Six $ A_{4} $ scalar singlets and one $ A_{4} $ fermion triplet are included, which are charged under the group $A_{4}\times U(1)_{X} \times Z_{5} \times Z_{4} $, with at least two degenerate RH (Right Handed) neutrinos. The light neutrino masses and leptogenesis both share a same origin with the heavy right handed neutrinos. Thus, we expound the possibility of generating resonant leptogenesis in this model at energies as low as 1 TeV. We then analyse our findings to envision if our model inclines more towards weak or strong washout.