Alternative 3-3-1 models with exotic electric charges

TL;DR

This paper classifies a broad set of 3-3-1 models with specific electric charge configurations, highlighting their unique features such as non-universal heavy neutral bosons and implications for flavor violation, with experimental constraints considered.

Contribution

It provides the most general classification of 3-3-1 models with β=√3, including solutions with anomaly cancellation among different fermion families and non-universal gauge interactions.

Findings

Identification of models with non-universal heavy neutral bosons

Analysis of conditions to evade flavor violation constraints

Inclusion of current LHC experimental bounds

Abstract

We report the most general classification of 3-3-1 models with $\beta =\sqrt{3}$. We found several solutions where anomaly cancellation occurs among fermions of different families. These solutions are particularly interesting as they generate non-universal heavy neutral vector bosons. Non-universality in the SM fermion charges under an additional gauge group generates Charged Lepton Flavor Violation (CLFV) and Flavor Changing Neutral Currents~(FCNC); we discuss under what conditions the new models can evade constraints coming from these processes. In Addition, we also report LHC constraints.