Natural supersymmetry and dynamical flavour with meta-stable vacua

Date
2014-07-29
Authors
Abela, Steven
McGarrie, Moritz
Journal Title
Journal ISSN
Volume Title
Publisher
Springer
Abstract
We show how gauged flavour breaking and N = 1 supersymmetry breaking can be dynamically aligned to produce natural models. Supersymmetry is broken in a metastable vacuum, while a weakly gauged flavour symmetry is identified with an SU (3) F subgroup of the global symmetry of the SQCD model. We find that alignment can easily occur either through strongly coupled flavour models, with SQCD bound states playing the role of flavons, or entirely weakly coupled and renormalizable models with elementary SU (3) F adjoint flavons. In both cases it is essential that the SU (3) F breaking, and hence all the flavour structure, is driven dynamically by the SUSY breaking. The resulting flavour gauge mediation in conjunction with the usual gauge mediation contribution leads to naturally light third generations squarks, with first and second generations above.
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Keywords
Research Subject Categories::NATURAL SCIENCES::Physics , Supersymmetry and Duality , Supersymmetry Breaking
Citation