We search for viable models of direct gauge mediation, where the SUSY-breaking sector is (generalized) SQCD, which has cosmologically favorable uplifted vacua even when the reheating temperature is well above the messenger scale. This requires a relatively large tadpole term in the scalar potential for the spurion field X and, consequently, we argue that pure (deformed) SQCD is not a viable model. On the other hand, in SQCD with an adjoint, which is natural e.g. in string theory, assuming an appropriate sign in the Kahler potential for X, such metastable vacua are possible.
Auzzi, R., Elitzur, S., Giveon, A., On Uplifted SUSY-Breaking Vacua and Direct Mediation in Generalized SQCD, <<JOURNAL OF HIGH ENERGY PHYSICS>>, 2010; (1003 (2010) 094): 0-20. [doi:10.1007/JHEP03(2010)094] [http://hdl.handle.net/10807/56268]
On Uplifted SUSY-Breaking Vacua and Direct Mediation in Generalized SQCD
Auzzi, Roberto;
2010
Abstract
We search for viable models of direct gauge mediation, where the SUSY-breaking sector is (generalized) SQCD, which has cosmologically favorable uplifted vacua even when the reheating temperature is well above the messenger scale. This requires a relatively large tadpole term in the scalar potential for the spurion field X and, consequently, we argue that pure (deformed) SQCD is not a viable model. On the other hand, in SQCD with an adjoint, which is natural e.g. in string theory, assuming an appropriate sign in the Kahler potential for X, such metastable vacua are possible.
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