  We study the flavour changing neutral Higgs boson decays that can be induced
from genuine supersymmetric particles at the one-loop level and within the
context of the Minimal Supersymmetric Standard Model. We consider all the
possible flavour changing decay channels of the three neutral Higgs bosons into
second and third generation quarks, and focus on the Supersymmetric-QCD
corrections from squark-gluino loops which are expected to provide the dominant
contributions. We assume here the more general hypothesis for flavour mixing,
where there is misalignment between the quark and squark sectors, leading to a
flavour non-diagonal squark mass matrix. The form factors involved, and the
corresponding Higgs partial decay widths and branching ratios, are computed
both analytically and numerically, and their behaviour with the parameters of
the Minimal Supersymmetric Standard Model and with the squark mass mixing are
analyzed in full detail. The large rates found, are explained in terms of the
non-decoupling behaviour of these squark-gluino loop corrections in the
scenario with very large supersymmetric mass parameters. Our results show that
if these decays are seen in future colliders they could provide clear indirect
signals of supersymmetry.
