Squarks and Sleptons between Branes and Bulk
Wilfried Buchmuller, Joern Kersten, Kai Schmidt-Hoberg
Abstract
We study gaugino-mediated supersymmetry breaking in a six-dimensional SO(10) orbifold GUT model where quarks and leptons are mixtures of brane and bulk fields. The couplings of bulk matter fields to the supersymmetry breaking brane field have to be suppressed in order to avoid large FCNCs. We derive bounds on the soft supersymmetry breaking parameters and calculate the superparticle mass spectrum. If the gravitino is the LSP, the stau1 or the snutau turns out to be the NLSP, with characteristic signatures at future colliders and in cosmology.
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