Higgs-Boson Masses and Mixing Matrices in the NMSSM: Analysis of On-Shell Calculations

Understand

We analyze the Higgs-boson masses and mixing matrices in the NMSSM based on an on-shell (OS) renormalization of the gauge-boson and Higgs-boson masses and the parameters of the top/scalar top sector.

• We compare the implementation of the OS calculations in the codes NMSSMCALC and NMSSM-FeynHiggs up to $\mathcal{({\alpha}_t{\alpha}_s)}$.
• We identify the sources of discrepancies at the one- and at the two-loop level.
• Finally we compare the OS and $\overline{\text{DR}}$ evaluation as implemented in NMSSMCALC.