Higgs couplings in the MSSM at large tan β
Abstract
We consider tan β-enhanced quantum effects in the minimal supersymmetric standard model (MSSM) including those from the Higgs sector. To this end, we match the MSSM to an effective two-Higgs doublet model (2HDM), assuming that all SUSY particles are heavy, and calculate the coefficients of the operators that vanish or are suppressed in the MSSM at tree-level. Our result clarifies the dependence of the large-tan β resummation on the renormalization convention for tan β, and provides analytic expressions for the Yukawa and trilinear Higgs interactions. The numerical effect is analyzed by means of a parameter scan, and we find that the Higgs-sector effects, where present, are typically larger than those from the ``wrong-Higgs'' Yukawa couplings in the 2HDM.
- Publication:
-
Journal of High Energy Physics
- Pub Date:
- January 2009
- DOI:
- 10.1088/1126-6708/2009/01/031
- arXiv:
- arXiv:0810.3768
- Bibcode:
- 2009JHEP...01..031B
- Keywords:
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- High Energy Physics - Phenomenology
- E-Print:
- 27 pages, LaTeX