Implications of the 750 GeV Diphoton Excess in Gaugino Mediation

TL;DR

This paper explores how the 750 GeV diphoton excess suggests new vector-like matter around TeV scale, affecting SUSY spectra and enabling a 125 GeV Higgs with relatively light gluinos detectable at the LHC.

Contribution

It demonstrates that the diphoton excess implies specific SUSY mass spectrum modifications in gaugino mediation models, explaining the Higgs mass with accessible gluino masses.

Findings

Radiative corrections from $SU(3)$ are significantly altered.

Characteristic SUSY mass spectra emerge, with enhanced scalar trilinear couplings.

A 125 GeV Higgs can be achieved with gluinos of 2-3 TeV.

Abstract

The 750 GeV diphoton excess reported by ATLAS and CMS indicates the presence of several pairs of the vector-like matter multiplets around TeV scale. If that is the case, radiative corrections from the $SU(3)$ gauge interaction significantly change from those of MSSM, and the infrared-free nature of the gauge interaction leads to characteristic SUSY mass spectra: a ratio of a squark mass to the gluino mass, and scalar trilinear couplings are enhanced at the low-energy scale. Consequently, even in gaugino mediation models, the Higgs boson mass of 125 GeV is explained with the fairly light gluino of 2-3 TeV, which can be accessible at the LHC.