Radiative Corrections to $H^0\to WW/ZZ$ in the MSSM

The electroweak $\mathcal O(α)$ radiative corrections to the decay of the heavy CP-even MSSM Higgs boson to weak gauge bosons are presented. Due to the suppression of the tree-level $H^0WW/H^0ZZ$ coupling, the electroweak contributions to the partial decay width are significant. Although the effective Born decay width can be rather small for certain $M_{A^0}$ values (especially for large $\tanβ$), the corrected partial widths at different values of $M_{A^0}$ are of comparable size.

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