MSSM Higgs Couplings to Bottom Quarks: Two-Loop Corrections
High Energy Physics - Phenomenology
2008-11-26 v1
Abstract
We present the two-loop SUSY-QCD corrections to the effective bottom Yukawa couplings within the minimal supersymmetric extension of the Standard Model. The effective Yukawa couplings include the resummation of the non-decoupling corrections Delta m_b for large values of tg(beta). We have derived the two-loop SUSY-QCD corrections to the leading SUSY-QCD and top-induced SUSY-electroweak contributions to Delta m_b. The scale dependence of the resummed Yukawa couplings is reduced from O(10%) to the per-cent 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.
Cite
@article{arxiv.0808.0087,
title = {MSSM Higgs Couplings to Bottom Quarks: Two-Loop Corrections},
author = {David Noth and Michael Spira},
journal= {arXiv preprint arXiv:0808.0087},
year = {2008}
}
Comments
5 pages, 4 figures