Gluino Decay as a Probe of High Scale Supersymmetry Breaking

TL;DR

This paper proposes using gluino decay patterns at the LHC to indirectly probe high-scale supersymmetry breaking, especially when scalar particles are too heavy to produce directly or decay too quickly to measure.

Contribution

It introduces a method to infer the scalar mass scale in supersymmetry through detailed analysis of gluino two-body decay patterns at colliders.

Findings

Gluino decay patterns encode information about the scalar mass scale.

Two-body gluino decay can be used as a probe for high-scale SUSY breaking.

The proposed method can distinguish different scalar mass regimes.

Abstract

A supersymmetric standard model with heavier scalar supersymmetric particles has many attractive features. If the scalar mass scale is O(10 - 10^4) TeV, the standard model like Higgs boson with mass around 125 GeV, which is strongly favored by the LHC experiment, can be realized. However, in this scenario the scalar particles are too heavy to be produced at the LHC. In addition, if the scalar mass is much less than O(10^4) TeV, the lifetime of the gluino is too short to be measured. Therefore, it is hard to probe the scalar particles at a collider. However, a detailed study of the gluino decay reveals that two body decay of the gluino carries important information on the scalar scale. In this paper, we propose a test of this scenario by measuring the decay pattern of the gluino at the LHC.