Explicit R-Symmetry Breaking and Metastable Vacua

Details Explicit R-Symmetry Breaking and Metastable Vacua Explicit R-Symmetry Breaking and Metastable Vacua

2008-09-26

arxiv.org/abs/0809.4618v2

JHEP 0811:077,2008

Physics

High Energy Physics

High Energy Physics - Theory

35 pages, 5 figures, minor clarifications, references added, JHEP version

Scientific paper

10.1088/1126-6708/2008/11/077

We consider O'Raifeartaigh-like models with explicit R-symmetry breaking and analyze the vacuum landscape. Taking such models as candidates for the hidden sector, we analyze the gauge mediation of the supersymmetry breaking, focusing on the effects produced by R-symmetry breaking. First, we construct families of non-R-symmetric models containing only singlet chiral superfields, and determine the conditions under which SUSY vacua, runaway directions and (longlived) metastable vacua exist. We then extend the results to the case in which some of the chiral fields are in a non-trivial representation of SU(5). Gauging this symmetry, we compute soft masses for gauginos and sfermions, and analyze several issues such as doublet/triplet splitting, unification of coupling constants and CP violation phases.

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