Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-16559
Noth, D; Spira, M (2008). Higgs boson couplings to bottom quarks: two-loop supersymmetry-QCD corrections. Physical Review Letters, 101(18):181801.
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We present two-loop supersymmetry (SUSY) QCD corrections to the effective bottom Yukawa couplings within the minimal supersymmetric extension of the standard model (MSSM). The effective Yukawa couplings include the resummation of the nondecoupling corrections Deltam_ for large values of tanbeta. We have derived the two-loop SUSY-QCD corrections to the leading SUSY-QCD and top-quark-induced SUSY-electroweak contributions to Deltam_. The scale dependence of the resummed Yukawa couplings is reduced from O(10%) to the percent level. These results reduce the theoretical uncertainties of the MSSM Higgs branching ratios to the accuracy which can be achieved at a future linear e;e; collider.
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|Item Type:||Journal Article, refereed, original work|
|Communities & Collections:||07 Faculty of Science > Institute for Computational Science|
|Deposited On:||06 Mar 2009 10:30|
|Last Modified:||28 Nov 2013 01:47|
|Publisher:||American Physical Society|
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