# Gauging Lepton Flavour

## TL;DR

This paper explores a gauged lepton flavor symmetry model with anomaly cancellation, introducing exotic leptons and a see-saw mechanism, and compares its predictions with Minimal Flavour Violation, highlighting distinctive experimental signals especially in the mu-tau sector.

## Contribution

It proposes a novel gauged lepton flavor symmetry model with anomaly cancellation and exotic leptons, providing new insights into lepton mass generation and flavor violation.

## Key findings

- Exotic leptons induce a see-saw mechanism for SM lepton masses.
- Distinctive low-energy operators differ from Minimal Flavour Violation.
- Promising experimental signals identified in the mu-tau sector.

## Abstract

The flavour lepton symmetry is gauged for both the Standard Model flavor group and its extension with three degenerate right-handed neutrinos. As a consequence of anomaly cancellation, exotic leptons are introduced which induce a see-saw mechanism that generates the masses of the SM leptons. The model is compared with Minimal Flavour Violation, the difference between the low-energy effective operators resulting is identified, as well as the distinctive experimental signals, particularly promising in the $\mu-\tau$ sector.