[SU(3)XSU(2)XU(1)]2 and Strong Unification
Chun Liu
Abstract
A supersymmetric model with gauge symmetry G1 X G2, where Gi=SU(3)i X SU(2)i X U(1)i, is constructed within the framework of gauge mediated supersymmetry breaking. At the energy scale (10-100) TeV where the gauge symmetry breaks down to the Standard Model (SM), G1 is strong and G2 is weak. The observed gauge coupling constant unification of the SM is attributed to that of G2. The messenger fields and Higgs fields just satisfy the condition that makes G2 a realization of strong unification. The SM gauginos are predicted to be generally heavier than the sleptons and squarks.
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