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T: Fachverband Teilchenphysik
T 15: Beyond the Standard Model (Theorie) 2
T 15.5: Talk
Monday, March 4, 2013, 17:45–18:00, WIL-A124
Corrections to Higgs boson masses in the MSSM — •Sebastian Paßehr — Max-Planck-Institut für Physik, München, Deutschland
The LHC has discovered a Higgs-like particle with a mass of ≈ 126GeV. This particle, if interpreted as a Higgs, is compatible with one of the neutral CP-even Higgs bosons of the MSSM.
The experimental accuracy of the mass of that Higgs-like particle is better than 0.5GeV. On the theory side, it has been shown a long time ago, that radiative corrections to the tree-level masses of Higgs bosons are sizeable and hence very important to know. To be competitive with the measurement, two-loop calculations become important. Furthermore, also phases in the case of complex parameters can lead to remarkable contributions.
I will present an analysis of two-loop mass corrections of the order αt2 in the complex MSSM in a full Feynman-diagrammatic approach.