Supersymmetric Higgs Yukawa Couplings to Bottom Quarks at next-to-next-to-leading Order

Abstract

The effective bottom Yukawa couplings are analyzed for the minimal supersymmetric extension of the Standard Model at two-loop accuracy within SUSY-QCD. They include the resummation of the dominant corrections for large values of tg(beta). In particular the two-loop SUSY-QCD corrections to the leading SUSY-QCD and top-induced SUSY-electroweak contributions are addressed. The residual theoretical uncertainties range at the per-cent level.

25 pages, 9 figures, added comments and references, typos corrected, results unchanged, published version

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