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T: Fachverband Teilchenphysik

T 77: Jenseits des Standardmodells (Theorie) 2

T 77.3: Talk

Wednesday, March 26, 2014, 17:15–17:30, P6

Two-Loop Contributions of the Order O(α_sα_t) to the Masses of the NMSSM Higgs Bosons — Margarete Mühlleitner¹, Heidi Rzehak², Nhung Thi Dao¹, and •Kathrin Walz¹ — ¹Institute for Theoretical Physics, Karlsruhe Institute of Technology — ²Physikalisches Institut, Albert-Ludwigs-Universität Freiburg

The Higgs sector of the Next-to Minimal Supersymmetric Extension of the Standard Model features five neutral Higgs bosons. Compared to the MSSM it is extended by one additional complex singlet field.

After the discovery of a Higgs-like boson at the LHC it is important to have accurate phenomenological predictions available for the different models in order to discuss them in light of the experimental results.

We contribute to this effort by calculating the two-loop contributions of the order O(α_sα_t) in the approximation of vanishing external momentum to the masses of the neutral Higgs bosons in the framework of the NMSSM. We employ a renormalization scheme that mixes on-shell and DR renormalization conditions matching those we used in our previous one-loop calculation.