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arxiv: hep-ph/9707425 · v1 · submitted 1997-07-22 · ✦ hep-ph

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Constraints on Finite Soft Supersymmetry-Breaking Terms

Tatsuo Kobayashi , Jisuke Kubo , Myriam Mondragon , George Zoupanos
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classification ✦ hep-ph
keywords finitemodelsrulesoftrequiringsectorstringsupersymmetry-breaking
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Requiring the soft supersymmetry-breaking (SSB) parameters in finite gauge-Yukawa unified models to be finite up to and including two-loop order, we derive a two-loop sum rule for the soft scalar-masses. It is shown that this sum rule coincides with that of a certain class of string models in which the massive string states are organized into N=4 supermultiplets. We investigate the SSB sector of two finite SU(5) models. Using the sum rule which allows the non-universality of the SSB terms and requiring that the lightest superparticle particleis neutral, we constrain the parameter space of the SSB sector in each model.

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  1. Emergence of conformal properties in Finite Grand Unified Theories via reduction of couplings

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    Finite SUSY GUTs with reduction of couplings exhibit conformal behavior and AMSB-like soft terms without tachyons when connected to a Weyl-invariant supergravity with no-scale Kähler potential.