Abstract
We provide the two-loop corrections to the Higgs boson masses of the CP-violating NMSSM in the Feynman diagrammatic approach with vanishing external momentum at \( \mathcal{O}\left({\alpha}_t{\alpha}_s\right) \). The adopted renormalization scheme is a mixture between \( \overline{\mathrm{DR}} \) and on-shell conditions. Additionally, the renormalization of the top/stop sector is provided both for the \( \overline{\mathrm{DR}} \) and the on-shell scheme. The calculation is performed in the gaugeless limit. We find that the two-loop corrections compared to the one-loop corrections are of the order of 5-10%, depending on the top/stop renormalization scheme. The theoretical error on the Higgs boson masses is reduced due to the inclusion of these higher order corrections.
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Mühlleitner, M., Nhung, D.T., Rzehak, H. et al. Two-loop contributions of the order \( \mathcal{O}\left({\alpha}_t{\alpha}_s\right) \) to the masses of the Higgs bosons in the CP-violating NMSSM. J. High Energ. Phys. 2015, 128 (2015). https://doi.org/10.1007/JHEP05(2015)128
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DOI: https://doi.org/10.1007/JHEP05(2015)128