https://doi.org/10.1140/epjc/s10052-014-2994-0
Regular Article - Theoretical Physics
Momentum-dependent two-loop QCD corrections to the neutral Higgs-boson masses in the MSSM
1
Max-Planck-Institut für Physik (Werner-Heisenberg-Institut), Föhringer Ring 6, 80805, Munich, Germany
2
Instituto de Física de Cantabria (CSIC-UC), Santander, Spain
* e-mail: Sven.Heinemeyer@cern.ch
Received:
16
June
2014
Accepted:
19
July
2014
Published online:
12
August
2014
Results are presented for the momentum-dependent two-loop contributions of 
to the masses and mixing effects in the Higgs sector of the MSSM. They are obtained in the Feynman-diagrammatic approach using a mixed on-shell/
renormalization that can directly be matched onto the higher-order corrections included in the code FeynHiggs. The new two-loop diagrams are evaluated with the program SecDec. The combination of the new momentum-dependent two-loop contribution with the existing one- and two-loop corrections in the on-shell/ scheme leads to an improved prediction of the light MSSM Higgs boson mass and a correspondingly reduced theoretical uncertainty. We find that the corresponding shifts in the lightest Higgs-boson mass 
are below 
in all scenarios considered, but they can extend up to the level of the current experimental uncertainty. The results are included in the code FeynHiggs.
© SIF and Springer-Verlag Berlin Heidelberg, 2014
