Neutrinos and Lepton Flavour Violation in the Left-Right Twin Higgs Model

TL;DR

This paper explores how the Left-Right Twin Higgs Model can naturally generate neutrino masses via an effective see-saw mechanism and examines constraints from lepton flavour violation processes.

Contribution

It demonstrates that the model can explain neutrino masses and mixings while analyzing lepton flavour violation constraints on the symmetry breaking scale.

Findings

The model can accommodate observed neutrino masses and mixings.

Lepton flavour violation processes impose bounds on the symmetry breaking scale.

The effective see-saw mechanism is viable within this framework.

Abstract

We analyse the lepton sector of the Left-Right Twin Higgs Model. This model offers an alternative way to solve the "little hierarchy" problem of the Standard Model. We show that one can achieve an effective see-saw to explain the origin of neutrino masses and that this model can accommodate the observed neutrino masses and mixings. We have also studied the lepton flavour violation process l_1 -> l_2 \gamma and discussed how the experimental bound from these branching ratios constrains the scale of symmetry breaking of this Twin Higgs model.