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In a supersymmetric theory, all interactions are to be symmetric
under the ex- change of bosons and fermions - the superpartners.
However, supersymmetry must be an explicitly yet softly broken
symmetry of nature, and supersymmetry breaking parameters, the
so-called soft terms, give rise to various phenomena observable at
LHC and future experiments, such as ILC. The mixing among different
flavors of matter - the flavor violation - is one such phenomenon
which exhibits a strong dependence on the structure of the soft
terms. In particular, decoupling of superpartners from the particle
spectrum at a threshold energy near the ultraviolet scale of the
standard model induces sizeable corrections to flavor violating
interactions. These corrections are strong enough to disqualify an
otherwise viable high-scale flavor model by a con- frontation with
experiments at low energy. This work focusses a class of flavor
models, following from strings or supergravity, and provides a
through analysis of their sensitivities to supersymmetric threshold
corrections.
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