Neutrino masses and lepton flavor violation in the 3-3-1 model with right-handed neutrinos

TL;DR

This paper demonstrates that the 3-3-1 model with right-handed neutrinos can naturally produce small neutrino masses and significant lepton flavor violation by adding a Higgs sextet, with decay processes depending on neutrino mass patterns.

Contribution

It introduces an additional Higgs sextet to the 3-3-1 model, enabling small neutrino masses and large lepton flavor violation, and analyzes the dependence of decay processes on neutrino mass patterns.

Findings

equate neutrino masses achieved with Higgs sextet

ecay epends on neutrino mass patterns when h^ u=0

ecay lmost independent of neutrino masses when h^ u eq 0

Abstract

We show that in the framework of the 3-3-1 model with right-handed neutrinos, small neutrino masses and large lepton flavor violating processes such as \mu \to 3e and \mu \to e\gamma can be obtained by just introducing an additional Higgs sextet. In the limit of vanishing of the Yukawa interaction among Higgs and lepton triplets (h^\nu = 0), the decay \mu \to 3e strongly depends on the neutrino mass patterns, but the \mu \to e\gamma almost does not. The neutrino masses are not constrained by such processes in the cases of h^\nu \neq 0.