Lepton flavour violating Higgs decays

TL;DR

This paper investigates lepton flavor violating Higgs decays within the inverse seesaw model, analyzing the maximum possible branching ratios compatible with current experimental constraints.

Contribution

It provides a comprehensive one-loop calculation of LFV Higgs decays in the inverse seesaw model considering the full parameter space and latest constraints.

Findings

Identifies the largest allowed branching ratios for LFV Higgs decays.

Shows dependence of decay rates on inverse seesaw parameters.

Provides parameter space scans consistent with experimental data.

Abstract

We present our study of lepton flavour violating decays of a Higgs boson with properties compatible with those of the particle recently discovered at the LHC. We worked in the context of the inverse seesaw model, considering the most generic case where the Standard Model is extended by three pairs of fermionic singlets in order to generate the neutrino masses and mixings required by neutrino oscillations. Using a full one-loop calculation together with the most recent experimental and theoretical constraints, we discuss the dependence on the parameters of the inverse seesaw model before concluding on the largest allowed branching ratios through scans over the full parameter space.