Tree level spontaneous R-symmetry breaking in O'Raifeartaigh models
Oct, 20087 pages
Published in:
- JHEP 01 (2009) 002
e-Print:
- 0810.0477 [hep-th]
Report number:
- SNUST-080902
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Abstract: (arXiv)
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.- O'Raifeartaigh model
- supersymmetry: spontaneous symmetry breaking
- R symmetry: violation
- field theory: action
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