Tree level spontaneous R-symmetry breaking in O'Raifeartaigh models

Details Tree level spontaneous R-symmetry breaking in O'Raifeartaigh models Tree level spontaneous R-symmetry breaking in O'Raifeartaigh models

2008-10-02

arxiv.org/abs/0810.0477v5

JHEP 0901:002,2009

Physics

High Energy Physics

High Energy Physics - Theory

8 pages; v2: major revision to section 6; v3: minor revision and typos; v4: typos, published version; v5: fix Latex syntax err

Scientific paper

10.1088/1126-6708/2009/01/002

We show that in O'Raifeartaigh models of spontaneous supersymmetry breaking, R-symmetries can be broken by non-zero values of fields at tree level, rather than by vacuum expectation values of pseudomoduli at loop level. As a complement of the recent result by Shih, we show that there must be a field in the theory with R-charge different from zero and two in order for R-symmetry breaking to occur, no matter whether the breaking happens at tree or loop level. We review the example by CDFM, and construct two types of tree level R-symmetry breaking models with a wide range of parameters and free of runaway problem. And the R-symmetry is broken everywhere on the pseudomoduli space in these models. This provides a rich set of candidates for SUSY model building and phenomenology.

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