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We present a supersymmetric composite model with dynamical supersymmetrybreaking. The model is based on the gauge group $SU(2)_S \times SU(2)_H \timesSU(3)_c \times SU(2)_L \times U(1)_Y$. Supersymmetry is dynamically broken bythe non-perturbative effect of the $SU(2)_S$ `supercolor' interaction. Thelarge top Yukawa coupling is naturally generated by the $SU(2)_H$ `hypercolor'interaction as recently proposed by Nelson and Strassler. The supersymmetrybreaking is mediated to the standard model sector by a new mechanism. Theelectroweak symmetry breaking is caused by the radiative correction due to thelarge top Yukawa coupling with the supersymmetry breaking. This is the`radiative breaking scenario', which originates from the dynamics of thesupercolor and hypercolor gauge interactions.Comment: 30 pages, uses REVTEX macro, revised manuscript to appear in Phys.  Rev.

Supersymmetric composite model with dynamical supersymmetry breaking