SUPERSYMMETRY BREAKING WITHOUT A MESSENGER GAUGE GROUP

We propose a simple gauge-mediated supersymmetry breaking model in whi ch suitable soft breaking masses are dynamically generated without rel ying on the messenger gauge interaction. This model is constructed as an extention of the 3-2 model and needs no fine-tuning of parameters. The dynamical supersymmetry breaking sector contains nonrenormalizable interactions and vectorlike fields. Nonrenormalizable terms are chara cterized by the couplings of 0(1) in units of the Planck scale. The hi erarchy of various mass scales in the model arises from the nonrenorma lizable terms. The vacuum of this model conserves the color and electr oweak symmetry. We also discuss a possible solution to the mu problem in this framework.