Lepton Flavor Violation processes in 331 Models

TL;DR

This paper investigates lepton flavor violation in 331 models with extended gauge symmetry, analyzing processes mediated by the $Z'$ boson and comparing predictions with experimental limits.

Contribution

It provides a detailed study of flavor changing neutral currents in 331 models, focusing on leptonic processes and their experimental constraints.

Findings

Constraints on $Z'$ boson mass from LFV processes

Predictions for branching ratios of $ au o lll$ and $ au( o e,\, ext{ extmu}) o e( extmu) extgamma$

Identification of parameter space consistent with current experimental bounds

Abstract

Models based on the extended symmetry gauge $SU(3)_c \otimes SU(3)_L \otimes U(1)_Y$ can be build up with a leptonic sector consistent of five triplets in different $SU(3)_L$ representations where additional heavy fermions are included. Some of these models present flavor changing neutral currents in the leptonic sector which are mediated through the $Z'$ boson. One of these models is studied using the measurements of lepton flavor violation processes such as $\tau\rightarrow lll$ with $l= e,\mu$ and $\mu(\tau) \to e (\mu) \gamma$.