PERTURBATIVE UNIFICATION OF SOFT SUPERSYMMETRY-BREAKING TERMS

Perturbative unification of soft supersymmetry-breaking (SSB) paramete rs is proposed in gauge-Yukawa unified models, The method, which can b e applied in any finite order in perturbation theory, consists in sear ching for renormalization group invariant relations among the SSB para meters, which are consistent with perturbative renormalizability. For the minimal gauge-Yukawa unified model based on SU(5) we find that the low energy SSB sector contains a single arbitrary parameter, the unif ied gaugino mass. Within a certain approximation we find that the mode l predicts a superpartner spectrum which is consistent with the experi mental data.