QCD corrections to the decay $H^+ \to \st \bar{\sb}$ in the Minimal Supersymmetric Standard Model

Abstract

We calculate the supersymmetric $\mathcal{O}({\alpha }_s)$ QCD corrections to the width of the decay $H^+ \rightarrow \st\bar{\sb}$ within the Minimal Supersymmetric Standard Model. We find that the QCD corrections are significant, but that they do not invalidate our previous conclusionat tree-level on the dominance of the $\st\bar{\sb}$ mode in a wide parameter region.

arXiv comment15 pages, Latex, 2 figures

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• Decoupling of the $\epsilon$-scalar mass in softly broken supersymmetry
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• The Higgs sector of supersymmetric theories and the implications for high-energy colliders
• Impact of squark pair decay modes on search for supersymmetric neutral Higgs bosons