Gauge mediation inF-theory GUT models

Gauge Mediation in String Theory

We show that a large class of phenomenologically viable models for gauge mediation of supersymmetry breaking based on meta-stable vacua can be realized in local Calabi-Yau compactifications of string theory.

A New Gauge Mediation Theory

We propose a class of models with gauge mediation of supersymmetry breaking, inspired by simple brane constructions, where R-symmetry is very weakly broken. The gauge sector has an extended N = 2 supersymmetry and the two electroweak Higgses form an N = 2 hy-permultiplet, while quarks and leptons remain in N = 1 chiral multiplets. Supersymmetry is broken via the D-term expectation value of a se...

A microscopic theory of gauge mediation

We construct models of indirect gauge mediation where the dynamics responsible for breaking supersymmetry simultaneously generates a weakly coupled subsector of messengers. This provides a microscopic realization of messenger gauge mediation where the messenger and hidden sector fields are unified into a single sector. The UV theory is SQCD with massless and massive quarks plus singlets, and at...

Gauge Mediation Models with Neutralino Dark Matter

We study gauge mediation models of supersymmetry breaking with neutralino LSP. These models are naturally realized by embedding the usual four-dimensional gauge mediation models into a higher-dimensional spacetime such as M4 × S/Z2. We calculate the relic abundance of the neutralino LSP in these models and show that there exist wide parameter regions where the neutralino LSP constitutes the dom...

Gauge Field Theory Models