Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-08-03
JHEP0511:003,2005
Physics
High Energy Physics
High Energy Physics - Phenomenology
32 pages, 5 tables; extended previous analysis to include U(1)' models and NMSSM where a comparative discussion is given
Scientific paper
10.1088/1126-6708/2005/11/003
We derive one-loop renormalization group (RG) invariant observables and analyze their phenomenological implications in the MSSM and its \mu problem solving extensions, U(1)' model and NMSSM. We show that there exist several RG invariants in the gauge, Yukawa and soft-breaking sectors of each model. In general, RG invariants are highly useful for projecting experimental data to messenger scale, for revealing correlations among the model parameters, and for probing the mechanism that breaks supersymmetry. The Yukawa couplings and trilinear soft terms in U(1)' model and NMSSM do not form RG invariants though there exist approximate invariants in low tan(beta). In the NMSSM, there are no invariants that contain the Higgs mass-squareds. We provide a comparative analysis of RG invariants in all three models and analyze their model-building and phenomenological implications by a number of case studies.
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