Neutrino mass and charged lepton flavor violation in an extended left-right symmetric model

TL;DR

This paper explores an extended left-right symmetric model with an additional U(1) symmetry, explaining neutrino masses via inverse seesaw, muon g-2 anomaly, and predicting charged lepton flavor violation.

Contribution

It introduces a novel U(1)_{L__} extension with inverse seesaw for neutrino masses and links muon g-2 to new gauge bosons, providing testable predictions.

Findings

Muon g-2 anomaly explained by Z_{} coupling.

Neutrino mass matrix with specific two-zero texture.

Observable charged lepton flavor violation in - sector.

Abstract

We consider an $U(1)_{L_\mu -L_\tau}$ extended left-right symmetric gauge theory where the neutrino masses are generated through inverse seesaw mechanism. In this model the muon $(g-2)$ anomaly is accounted for by the mediation of $Z_{\mu\tau}$, the gauge boson of $U(1)_{L_\mu - L_\tau}$ symmetry. The symmetries of the model require the light neutrino mass matrix to have a particular two-zero texture, which leads to non-trivial constraints in the minimum neutrino mass. In addition, the model predicts observable charged lepton flavor violation in $\mu-\tau$ sector.