Pushing the SUSY Higgs mass towards 125 GeV with a color adjoint

Abstract

We show that inclusion of a TeV scale chiral superfield transforming in the adjoint representation of the color SU(3) to the MSSM particle content modifies the renormalization group running of some parameters in such a way that a 125 GeV mass of the light Higgs boson is accommodated more comfortably than in cMSSM / mSUGRA. Put differently, the introduction of a color adjoint TeV scale superfield helps resurrecting lighter choices for the stop and gluino which are otherwise disfavored in cMSSM / mSUGRA.

Comments: v2: 6 pages, 4 figures, estimate of fine-tuning and some more clarifying remarks added, published in PRD