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VOLUME 61 (1995) | ISSUE 4 | PAGE 236
Upper bound on the supersymmetry breaking scale in supersymmetric SU (5) model
The status of coupling constant unification in standard supcrsymmctric SU(5) model and its extensions is discussed. Taking into account uncertainties related with the initial coupling constants and threshold corrections at the low and high scales we find that in standard supersymmctric SU(5) model the scale of the supersymmetry breaking could be up to 108 GeV. In the extensions of standard 517(5) model it is possible to increase the supersymmetry breaking scale up to 10" GeV.