On the Tuning and the Mass of the Composite Higgs

Understand

We analyze quantitatively the tuning of composite Higgs models with partial compositeness and its interplay with the predicted Higgs mass.

• In this respect we identify three classes of models, characterized by different quantum numbers of the fermionic colored resonances associated with the top quark, the so-called top partners.
• The main result of this classification is that in all models with moderate tuning a light Higgs, of 125 GeV mass, requires the presence of light top partners, around 1 TeV.
• The minimal tuning is comparable to the one of the most attractive supersymmetric models in particular the ones realizing Natural SUSY.