Three-loop MSSM Higgs-Boson Mass Predictions and Regularization by Dimensional Reduction

Abstract

The evaluation of three-loop contributions to the MSSM Higgs-boson mass is considered at the orders enhanced by the strong gauge coupling and top or bottom Yukawa couplings, i.e. at the orders $O({\alpha }_{t,b}{\alpha }_s^2,{\alpha }_{t,b}^2{\alpha }_s,{\alpha }_{t,b}^3)$. We prove that regularization by dimensional reduction preserves supersymmetry at the required level. Thus generating counterterms by multiplicative renormalization is correct. Technically, we extend a previous two-loop analysis to the three-loop level. The extension covers not only the genuine three-loop Higgs potential counterterms but also a large sector of two-loop counterterms, required for subrenormalization.

arXiv comment21 pages, 5 figures

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