NEW MULTISCALE SUPERSYMMETRIC MODELS WITH FLAVOR-CHANGING NEUTRAL-CURRENT SUPPRESSION

We discuss the phenomenology of a class of supersymmetric models in wh ich some of the quark and lepton superfields are an integral part of a dynamical supersymmetry breaking sector. The corresponding squarks an d sleptons are much heavier than any other superpartners, and could na turally have masses as high as similar to 40 TeV. We discuss a general set of conditions for acceptable flavor-changing neutral currents and natural electroweak symmetry breaking, and identify two particularly interesting new classes of theories. We discuss how phenomenological s ignatures of such multi-scale models at the CERN LEP IT and Fermilab T evatron colliders could significantly differ from previously considere d scenarios. In particular, we give experimental signals which could b e present if the left-handed selectron is much lighter than the right- handed one. (C) 1997 Elsevier Science B.V.