Monday, September 10, 2012

1209.1531 (Hiraku Fukushima et al.)

Cosmologically viable gauge mediation    [PDF]

Hiraku Fukushima, Ryuichiro Kitano, Fuminobu Takahashi
Gauge mediation provides us with a complete picture of supersymmetry breaking and its mediation within the effective field theories, and thus allows us to discuss consistencies with low-energy particle physics as well as cosmological observations. We study in detail the cosmological evolution of the pseudo-modulus field in the supersymmetry breaking sector and also the production of the gravitinos in the early Universe in a simple (but a complete) model of gauge mediation. Under fairly reasonable assumptions, it is found that there exists a parameter region where dark matter of the Universe is explained by both thermally and non-thermally produced gravitinos, while the baryon asymmetry of the Universe is generated through the thermal leptogenesis.
View original: http://arxiv.org/abs/1209.1531

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