Mixed gluinos and sgluons from a new SU(3) gauge group

TL;DR

This paper explores supersymmetric models with an extended SU(3) gauge symmetry that breaks down to QCD, predicting new color octet particles like sgluons and gluinos with distinctive mass and coupling features.

Contribution

It introduces a new supersymmetric framework based on an SU(3)×SU(3) gauge group that predicts novel color octet states and analyzes their mass spectrum and couplings.

Findings

Predicts 3 color octet sgluons and 4 gluinos with mixed mass terms.

Identifies conditions for global minima with desired symmetry breaking.

Gluino-quark-squark couplings can be as large as in minimal SUSY.

Abstract

I study supersymmetric models in which the QCD gauge group is the remnant diagonal subgroup from the spontaneous breaking of an $SU(3) \times SU(3)$ gauge group at a multi-TeV scale. In renormalizable models with soft supersymmetry breaking, the scalar potential is shown to have global minima with the required gauge symmetry breaking pattern. In addition to a massive color octet vector boson, this framework predicts 3 color octet spin-0 sgluons, and 4 color octet gluinos with both Dirac and Majorana mass terms. One of the gluino mass eigenstates typically has a coupling to quark-squark pairs that is at least as large as the prediction of minimal supersymmetry, but it need not be the lightest one.