Abstract
Results for the leading two-loop corrections of \( \mathcal{O}\left({\alpha}_t^2\right) \) from the Yukawa sector to the Higgs-boson mass spectrum of the MSSM with complex parameters are presented, with details of the analytical calculation performed in the Feynman-diagrammatic approach using a mixed on-shell/\( \overline{\mathrm{DR}} \) scheme that can be directly matched onto the higher-order terms in the code FeynHiggs. Numerical results are shown for the masses and mixing effects in the neutral Higgs-boson sector and their variation with the phases of the complex parameters. Furthermore, the analytical expressions of the two-loop self-energies and the required renormalization constants are recorded. The new results can consistently be implemented in FeynHiggs.
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Hollik, W., Paßehr, S. Higgs boson masses and mixings in the complex MSSM with two-loop top-Yukawa-coupling corrections. J. High Energ. Phys. 2014, 171 (2014). https://doi.org/10.1007/JHEP10(2014)171
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DOI: https://doi.org/10.1007/JHEP10(2014)171