Gauge Extensions of Supersymmetric Models and Hidden Valleys

TL;DR

This paper explores how extending gauge groups in supersymmetric models affects sfermion mass relations and demonstrates the potential for hidden valleys at 10-100 GeV scales when extra gauge couplings are small.

Contribution

It analyzes the impact of extended gauge structures on sfermion mass sum rules and provides explicit models illustrating hidden valleys in supersymmetry.

Findings

Sum rules for sfermion masses depend on the gauge group structure.

Models with extra U(1) and left-right symmetry are explicitly constructed.

Hidden valleys at 10-100 GeV can naturally arise with small gauge couplings.

Abstract

Supersymmetric models with extended group structure beyond the standard model are revisited in the framework of general gauge mediation. Sum rules for sfermion masses are shown to depend genuinely on the group structure, which can serve as important probes for specific models. The left-right model and models with extra U(1) are worked out for illustrations. If the couplings of extra gauge groups are small, supersymmetric hidden valleys of the scale 10-100 GeV can be naturally constructed in companion of a TeV-scale supersymmetric visible sector.