Amelioration of Little Hierarchy Problem in SU(4)_c x SU(2)_L x SU(2)_R

Abstract

The little hierarchy problem encountered in the constrained minimal supersymmetric model (CMSSM) can be ameliorated in supersymmetric models based on the gauge symmetry G_{422} \equiv SU(4)_c x SU(2)_L x SU(2)_R. The standard assumption in CMSSM (and in SU(5) and SO(10)) of universal gaugino masses can be relaxed in G_{422}, and this leads to a significant improvement in the degree of fine tuning required to implement radiative electroweak breaking in the presence of a characteristic supersymmetry breaking scale of around a TeV. Examples of Higgs and sparticle mass spectra realized with 10% fine tuning are presented.

14 pages, 5 figures, 2 tables

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• GUT-Inspired Supersymmetric Model for h\rightarrow γγand Muon g-2
• Gauge Mediation Models with Adjoint Messengers
• Raising the Higgs Mass in Supersymmetry with t-t' Mixing
• Smooth $\mu$-Hybrid and Non-Minimal Higgs Inflation in $SU(4{)}_C\times SU(2{)}_L\times SU(2{)}_R$ With Observable Gravitational Waves