Implications of Bilinear R-Parity Violation on Neutrinos and Lightest Neutralino Decay in Split Supersymmetry

TL;DR

This paper explores how Bilinear R-Parity Violation in Split Supersymmetry influences neutrino properties and the decay patterns of the lightest neutralino, considering the Higgs mass and dark matter implications.

Contribution

It provides a detailed numerical analysis of neutrino parameters and neutralino decay channels within this specific supersymmetric framework, incorporating the Higgs mass constraint.

Findings

Constraints on neutrino sector parameters from oscillation data

Neutralino decay branching ratios depend critically on the spectrum

Model accommodates neutrino masses and dark matter candidate

Abstract

We discuss neutrino parameters in addition with the effects of a Higgs boson of mass $\sim$ 125 GeV in Split Supersymmetry with Bilinear R-Parity Violation. This model allows for the explanation of neutrino masses and mixing angles, and has the gravitino as Dark Matter candidate. We find constraints on the parameters in the neutrino sector of the model by performing a numerical study of the parameter space, and by fitting neutrino oscillation observables and the Higgs mass. In addition, we study in detail the decay of the lightest neutralino in this model and we realize the importance of the exact neutralino/chargino spectrum in the computation of its branching ratios.