Enhanced Higgs Mediated Lepton Flavour Violating Processes in the Supersymmetric Inverse Seesaw Model

TL;DR

This paper investigates how the inverse seesaw mechanism within the MSSM amplifies Higgs-mediated lepton flavour violation, notably increasing certain decay rates by up to two orders of magnitude.

Contribution

It demonstrates the significant enhancement of Higgs-mediated flavour violating processes due to right-handed sneutrino contributions in the inverse seesaw MSSM.

Findings

Branching ratios can increase by up to 100 times.

Higgs-mediated processes impact leptonic B decays.

Enhanced lepton flavour violation signals are predicted.

Abstract

We study the impact of the inverse seesaw mechanism on several low-energy flavour violating observables such as tau decaying to three muons in the context of the Minimal Supersymmetric Standard Model. As a consequence of the inverse seesaw, the contributions of the right-handed sneutrinos significantly enhance the Higgs-mediated penguin diagrams. We find that different flavour violating branching ratios can be enhanced by as much as two orders of magnitude. We also comment on the impact of the Higgs-mediated processes on the leptonic B-meson decays and on the Higgs flavour violating decays.