  We study how, as a result of the scanning of supersymmetry breaking during
the cosmological evolution, a relaxation mechanism can naturally determine a
hierarchy between the weak scale and the masses of supersymmetric particles.
Supersymmetry breaking is determined by QCD instanton effects, in an extremely
minimal setup in which a single field drives the relaxation and breaks
supersymmetry. Since gauginos are lighter than the other supersymmetric
particles by a one-loop factor, the theory is a realisation of Split
Supersymmetry free from the naturalness problem.
