A Scale-invariant Higgs Sector and Structure of the Vacuum

Understand

In view of the current status of measured Higgs boson properties, we consider a question whether only the Higgs self-interactions can deviate significantly from the Standard-Model (SM) predictions.

• This may be possible if the Higgs effective potential is irregular at the origin.
• As an example we investigate an extended Higgs sector with singlet scalar(s) and classical scale invariance.
• We develop a perturbative formulation necessary to analyze this model in detail.