Two-loop QCD corrections to the MSSM Higgs masses beyond the effective-potential approximation

Abstract

We compute the two-loop QCD corrections to the neutral Higgs-boson masses in the MSSM, including the effect of non-vanishing external momenta in the self-energies. We obtain corrections of O(alpha_t*alpha_s) and O(alpha*alpha_s), i.e., all two-loop corrections that involve the strong gauge coupling when the only non-vanishing Yukawa coupling is the top one. We adopt either the DRbar renormalization scheme or a mixed OS-DRbar scheme where the top/stop parameters are renormalized on-shell. We compare our results with those of earlier calculations, pointing out an inconsistency in a recent result obtained in the mixed OS-DRbar scheme. The numerical impact of the new corrections on the prediction for the lightest-scalar mass is moderate, but already comparable to the accuracy of the Higgs-mass measurement at the LHC.

22 pages, 5 pdf figures; v2: version to appear in EPJC

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Cited by in corpus (9)

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• Avoiding the Goldstone Boson Catastrophe in general renormalisable field theories at two loops
• Two-loop top-Yukawa-coupling corrections to the charged Higgs-boson mass in the MSSM
• Two-loop Higgs mass calculation from a diagrammatic approach
• The Lightest Higgs Boson Mass of the MSSM at Three-Loop Accuracy
• The light CP-even MSSM Higgs mass including N${}^3$LO+N${}^3$LL QCD corrections
• Selected topics on multi-loop calculations to Higgs boson properties and renormalization group functions