QCD CORRECTIONS TO FLAVOR-CHANGING NEUTRAL CURRENTS IN THE SUPERSYMMETRIC STANDARD MODEL

We compute the leading QCD corrections to K-K mixing in the supersymme tric standard model with general soft supersymmetry-breaking parameter s. We construct the Delta S = 2 effective Lagrangian for three hierarc hies of supersymmetric particle masses, namely, when the gluino mass i s comparable to, much greater than, or much less than the masses of th e first two generation squarks. We find that the QCD corrections tight en the Limits on squark mass splittings by more than a factor of two. (C) 1997 Elsevier Science B.V.