  In the context of supersymmetric models where the gauginos may have both
Majorana and Dirac masses we investigate the general constraints from
flavour-changing processes on the scalar mass matrices. One finds that the
chirality-flip suppression of flavour-changing effects usually invoked in the
pure Dirac case holds in the mass insertion approximation but not in the
general case, and fails in particular for inverted hierarchy models. We
quantify the constraints in several flavour models which correlate fermion and
scalar superpartner masses. We also discuss the limit of very large Majorana
gaugino masses compared to the chiral adjoint and Dirac masses, where the
remaining light eigenstate is the "fake" gaugino, including the consequences of
suppressed couplings to quarks beyond flavour constraints.

High Energy Physics - Phenomenology