Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-12-02
JHEP 0903:115,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
30 pages, 3 figures
Scientific paper
10.1088/1126-6708/2009/03/115
We consider supersymmetric models where gauge mediation provides the dominant contributions to the soft supersymmetry breaking terms while gravity mediation provides sub-dominant yet non-negligible contributions. We further assume that the gravity-mediated contributions are subject to selection rules that follow from a Froggatt-Nielsen symmetry. This class of models constitutes an example of viable and natural non-minimally flavor violating models. The constraints from mixing in the neutral K system imply that the modifications to the Standard Model predictions for mixing in the neutral B_d and B_s systems are generically at most at the percent level, but can be of order ten percent for large $\tan \beta$. The modifications for the neutral D system mixing are generically at most of order a few percent, but in a special subclass of models they can be of order one. We point out $\Delta B=1$ processes relevant for flavor violation in hybrid mediation.
Hiller Gudrun
Hochberg Yonit
Nir Yosef
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