Unification of SUSY breaking and GUT breaking

TL;DR

This paper presents a unified model where grand unified gauge symmetry breaking and supersymmetry breaking occur simultaneously within the same sector, predicting new particles and explaining the Higgs mass with specific soft term generation.

Contribution

It introduces an explicit SU(5)-based model linking GUT breaking and SUSY breaking, with novel gauge mediation mechanisms generating A- and B-terms at one-loop.

Findings

Mass spectrum analysis shows viable electroweak symmetry breaking.

Large B- and A-terms enable 125 GeV Higgs with ~1 TeV stop mass.

Model predicts SM-charged particles from the symmetry breaking sector.

Abstract

We build explicit supersymmetric unification models where grand unified gauge symmetry breaking and supersymmetry (SUSY) breaking are caused by the same sector. Besides, the SM-charged particles are also predicted by the symmetry breaking sector, and they give the soft SUSY breaking terms through the so-called gauge mediation. We investigate the mass spectrums in an explicit model with SU(5) and additional gauge groups, and discuss its phenomenological aspects. Especially, nonzero A-term and B-term are generated at one-loop level according to the mediation via the vector superfields, so that the electro-weak symmetry breaking and 125 GeV Higgs mass may be achieved by the large B-term and A-term even if the stop mass is around 1 TeV.