Metastable supersymmetry breaking and multitrace deformations of SQCD

Details Metastable supersymmetry breaking and multitrace deformations of SQCD Metastable supersymmetry breaking and multitrace deformations of SQCD

2008-12-17

arxiv.org/abs/0812.3213v2

JHEP 0903:043,2009

Physics

High Energy Physics

High Energy Physics - Theory

33 pages, 3 figures. Added references and a comment

Scientific paper

10.1088/1126-6708/2009/03/043

Metastable vacua in supersymmetric QCD in the presence of single and multitrace deformations of the superpotential are explored, with the aim of obtaining an acceptable phenomenology. The metastable vacua appear at one loop, have a broken R-symmetry, and a magnetic gauge group that is completely Higgsed. With only a single trace deformation, the adjoint fermions from the meson superfield are approximately massless at one loop, even though they are massive at tree level and R-symmetry is broken. Consequently, if charged under the standard model, they are unacceptably light. A multitrace quadratic deformation generates fermion masses proportional to the deformation parameter. Phenomenologically viable models of direct gauge mediation can then be obtained, and some of their features are discussed.

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