Two-loop top-Yukawa-coupling corrections to the charged Higgs-boson mass in the MSSM

Understand

The top-Yukawa-coupling enhanced two-loop corrections to the charged Higgs-boson mass in the real MSSM are presented.

• The contributing two-loop self-energies are calculated in the Feynman- diagrammatic approach in the gaugeless limit with vanishing external momentum and bottom mass, within a renormalization scheme comprising on-shell and $\overline{\text{DR}}$ conditions.
• Numerical results illustrate the effect of the $\mathcal{O}{(\alpha_t^2)}$ contributions and the importance of the two-loop corrections to the mass of the charged Higgs bosons.