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Advances in High Energy Physics
Volume 2013 (2013), Article ID 607807, 64 pages
Review Article

Precision Calculations in Supersymmetric Theories

Institute for Theoretical Particle Physics, Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany

Received 28 January 2013; Accepted 8 May 2013

Academic Editor: Hong-Jian He

Copyright © 2013 L. Mihaila. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In this paper we report on the newest developments in precision calculations in supersymmetric theories. An important issue related to this topic is the construction of a regularization scheme preserving simultaneously gauge invariance and supersymmetry. In this context, we discuss in detail dimensional reduction in component field formalism as it is currently the preferred framework employed in the literature. Furthermore, we set special emphasis on the application of multi-loop calculations to the analysis of gauge coupling unification, the prediction of the lightest Higgs boson mass, and the computation of the hadronic Higgs production and decay rates in supersymmetric models. Such precise theoretical calculations up to the fourth order in perturbation theory are required in order to cope with the expected experimental accuracy on the one hand and to enable us to distinguish between the predictions of the Standard Model and those of supersymmetric theories on the other hand.