Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-03-02
Physics
High Energy Physics
High Energy Physics - Phenomenology
Presented by G. Zoupanos at the International Workshop on Physics beyond the Standard Model (Valencia 97). 8 pages, 2 figs, us
Scientific paper
Gauge-Yukawa unified theories, and in particular those which are finite beyond the unification scale, have been extended to include a soft supersymmetry breaking (SSB) sector. In the case of the Finite Unified Theories a new solution to the condition of two-loop finiteness of the SSB parameters is found, which requires a sum rule for the relevant scalar masses. The sum rule permits violations of the universality of the scalar masses which is found to lead to phenomenological problems. The minimal supersymmetric SU(5) Gauge-Yukawa model and two Finite-Gauge-Yukawa models have been examined using the sum rule. The characteristic features of these models are: a) the old agreement of the top quark mass prediction persists using the new data, b) the lightest Higgs boson is predicted to be around 120 GeV, c) the s-spectrum starts above 200 GeV.
Kobayashi Tatsuo
Kubo Jisuke
Mondragon Myriam
Zoupanos George
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