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Higgs-boson-mediated FCNC in supersymmetric models with large<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="normal">tan</mml:mi><mml:mi /><mml:mi>β</mml:mi></mml:math>
In the supersymmetric models with a nontrivial flavor structure in the soft-breaking sector the exchange of neutral Higgs bosons mediates $\ensuremath{\Delta}F=2$ transitions. This mechanism is studied for $\ensuremath{\Delta}S,\ensuremath{\Delta}B=2$ processes and for a generic form of the soft-breaking terms. We find that Higgs-boson-mediated FCNC amplitudes increase very rapidly with $\mathrm{tan}\ensuremath{\beta}$ and …