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

A Bauer; A Bednyakov; A Bednyakov; A Djouadi; A Djouadi; A Djouadi; AI Davydychev; AL Kataev; AV Bednyakov; BA Kniehl; D Noth; David Noth; E Braaten; EL Berger; F Englert; FA Berends; G Degrassi; G Passarino; G Weiglein; G ’t Hooft; GL Bayatian; GS Guralnik; H Eberl; J Guasch; J Wess; JA Coarasa Perez; JM Campbell; JR Ellis; KG Chetyrkin; KG Chetyrkin; KG Chetyrkin; L Mihaila; LJ Hall; LR Surguladze; M Drees; M Drees; M Spira; M Spira; MA Shifman; Michael Spira; MS Carena; MS Carena; MS Carena; MS Carena; N Sakai; P Häfliger; PW Higgs; PW Higgs; PW Higgs; R Hempfling; RV Harlander; RV Harlander; S Dawson; S Dawson; S Dawson; S Dittmaier; S Dittmaier; S Dittmaier; S Schael; SA Larin; SG Gorishnii; SG Gorishnii; SG Gorishnii; SP Martin; SP Martin; SP Martin; T Inami; T Plehn; W Kilian; Yu A Gol’fand

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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.Comment: 25 pages, 9 figures, added comments and references, typos corrected, results unchanged, published versio

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