Two-Loop Large Higgs Mass Corrections to Vector Boson Self-Couplings

摘要

The two-loop corrections to the three-vector boson vertices are calculated in the limit of large Higgs mass. Corrections growing quadratically with the Higgs mass appear in the anomalous magnetic moment of the charged vector boson and the corresponding W0W+W- coupling. The weak coupling constant in the W0W+W- vertex receives a correction compared to the coupling in mu-decay. The results suggest a breakdown of perturbation theory for a Higgs mass of 3.4 TeV and larger.