Minimal Supersymmetric Inverse Seesaw: Neutrino masses, lepton flavour violation and LHC phenomenology

TL;DR

This paper explores a minimal supersymmetric inverse seesaw model that explains neutrino masses, predicts lepton flavor violation, and discusses potential LHC signals, highlighting its simplicity and phenomenological implications.

Contribution

It introduces a minimal supersymmetric inverse seesaw model with one singlet pair, successfully explaining neutrino data and predicting observable LHC signatures.

Findings

Neutrino masses explained with one singlet pair.

Predicted lepton flavor violation rates within experimental reach.

Characteristic LHC decay patterns linked to neutrino mixing parameters.

Abstract

We study neutrino masses in the framework of the supersymmetric inverse seesaw model. Different from the non-supersymmetric version a minimal realization with just one pair of singlets is sufficient to explain all neutrino data. We compute the neutrino mass matrix up to 1-loop order and show how neutrino data can be described in terms of the model parameters. We then calculate rates for lepton flavour violating (LFV) processes, such as $\mu \to e \gamma$, and chargino decays to singlet scalar neutrinos. The latter decays are potentially observable at the LHC and show a characteristic decay pattern dictated by the same parameters which generate the observed large neutrino angles.