The decay $h^0\to A^0{A}^0$: a complete 1-loop calculation in the MSSM

Abstract

In the minimal supersymmetric standard model the decay $h^0\to A^0{A}^0$ of the light neutral scalar $h^0$ is kinematically allowed for low values of $\tan \beta$ when radiative corrections to the neutral Higgs masses are taken into account. The width of this decay mode is revisited on the basis of a complete 1-loop diagrammatic calculation. We give the analytical expressions and numerical results and compare them with the corresponding ones from the simpler and compact approximations of the effective potential method and the renormalization group approach.

25 pages, LaTex, 10 figures included. Complete ps-file also available via WWW at http://itpaxp1.physik.uni-karlsruhe.de/prep/prep.html

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• ANALYTICAL EXPRESSIONS FOR RADIATIVELY CORRECTED HIGGS MASSES AND COUPLINGS IN THE MSSM
• Complete On-Shell Renormalization Scheme for the Minimal Supersymmetric Higgs Sector
• Two-Loop Radiative Corrections to the Lightest Higgs Boson Mass in the Minimal Supersymmetric Model
• The one-loop renormalization of the MSSM Higgs sector and its application to the neutral scalar Higgs masses
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