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 Minimal Supersymmetric Standard Model amplifies Higgs-mediated lepton-flavour-violating processes, leading to potentially large increases in observable decay rates.

Contribution

It demonstrates that light right-handed sneutrinos in the inverse seesaw significantly enhance Higgs-mediated flavor-violating processes in supersymmetry.

Findings

Branching ratios can increase by up to two orders of magnitude.

Higgs-mediated penguin diagrams are substantially amplified.

Implications for experimental searches of lepton-flavour violation.

Abstract

We study the impact of the inverse seesaw mechanism on several leptonic and hadronic low-energy flavour-violating observables in the context of the Minimal Supersymmetric Standard Model. Indeed, the contributions of the light right-handed sneutrinos from the inverse seesaw significantly enhance the Higgs-mediated penguin diagrams. We find that this can increase the different branching ratios by as much as two orders of magnitude.