Implications of a light Higgs in composite models

Abstract

We study the Higgs mass in composite Higgs models with partial compositeness, extending the results of ref. [1] to different representations of the composite sector for SO(5)=SO(4) and to the coset SO(6)=SO(5). For a given tuning we find in general a strong correlation between the mass of the top partners and the Higgs mass, akin to the one in supersymmetry. If the theory is natural a Higgs mass of 125 GeV typically requires fermionic partners below TeV which might be within the reach of the present run of LHC. A discussion of CP properties of both cosets is also presented.