Orateur
Johannes Braathen
(LPTHE)
Description
After the Higgs discovery, calculating its properties with high precision has become of great importance in the study of extensions of the Standard Model. The state-of-the-art calculation of Higgs masses is now at two-loop order for generic theories, performed in the Landau gauge. However, these calculations are plagued by infrared divergences due to tachyonic running Goldstone masses -- the so-called Goldstone boson catastrophe (GBC). I will present the recent solution to this problem for general renormalisable field theories [1609.06977] and the study of two-loop corrections to Higgs masses in non-supersymmetric models, made possible by the implementation of the solution to the GBC in SARAH.
Authors
Johannes Braathen
(LPTHE)
Dr
Mark Goodsell
(LPTHE)
