Renormalization of parameters of a soft breakdown of supersymmetry in the regime of strong yukawa coupling within a nonminimal supersymmetric standard model
| Autor: | M. A. Trusov, R. B. Nevzorov |
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| Rok vydání: | 2001 |
| Předmět: | |
| Zdroj: | Physics of Atomic Nuclei. 64:1513-1530 |
| ISSN: | 1562-692X 1063-7788 |
| DOI: | 10.1134/1.1398945 |
| Popis: | In the strong Yukawa coupling limit the renormalization of trilinear couplings $A_i(t)$ and combinations of the scalar particle masses $\mathfrak{M}_i^2(t)$ are studied in the framework of the Next--to--Minimal SUSY Model. The dependence of given parameters on their initial values at the Grand Unification scale disappears when the solutions of the renormalization group equations approach the infrared quasi fixed points. Besides that at $\tilde{\alpha}_{\text{GUT}}\ll Y_i(0)\ll 1$ in the vicinity of quasi fixed points $A_i(t)$ and $\mathfrak{M}_i^2(t)$ concentrated near lines or surfaces in the soft SUSY breaking parameter space. It occurs because the dependence of trilinear couplings and combinations of scalar particle mass on $A_i(0)$ and $\mathfrak{M}_i^2(0)$ disappears rather weakly. We propose a method which enables to obtain equations for such lines and surfaces. Their origin is also discussed by means of exact and approximate solutions of the NMSSM renormalization group equations. |
| Databáze: | OpenAIRE |
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