The MSSM Higgs Sector at O(alphab alphas) and Beyond
S. Heinemeyer, W. Hollik, H. Rzehak, G. Weiglein
Abstract
We evaluate O(alphab alphas) corrections in the MSSM Higgs boson sector, including an analysis of the renormalization in the bottom/scalar bottom sector. For mu < 0 the genuine two-loop corrections to the mass of the lightest Higgs boson mass can amount up to 3 GeV. Different renormalization schemes are applied and numerically compared. Likewise the residual dependence on the renormalization scale is investigated. This allows to determine the remaining theoretical uncertainties from unknown higher-order corrections at O(alphab alphas2) for different regions of the MSSM parameter space.
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