Joint Theory Seminar
Speaker: David Curtin
Title: Singlet-Stabilized Minimal Gauge Mediation
Host: Markus Luty
Room: 432
Abstract: We propose Singlet Stabilized Minimal Gauge Mediation as a simple ISS-based model of Direct Gauge Mediation which avoids both light gauginos and Landau Poles. The hidden sector has trivial magnetic gauge group and minimal unbroken SU(5) flavor group, while the uplifted vacuum is stabilized by an additional singlet sector with its own U(1) gauge symmetry, This generates a nonzero VEV for the singlet meson via the inverted hierarchy mechanism but requires tuning to a precision 0.1%, a common problem with quantum-stabilized models which might conceivably be explained by a UV-completion of the theory. In the course of this analysis we also outline some simple model-building rules for stabilizing uplifted ISS models, which lead us to conclude that meson deformations are required (or at least heavily favored) to stabilize the adjoint component of the magnetic meson.
