The 125 GeV boson: A composite scalar?

Abstract

Assuming that the 125 GeV particle observed at the LHC is a composite scalar and responsible for the electroweak gauge symmetry breaking, we consider the possibility that the bound state is generated by a non-Abelian gauge theory with dynamically generated gauge boson masses and a specific chiral symmetry breaking dynamics motivated by confinement. The scalar mass is computed with the use of the Bethe-Salpeter equation and its normalization condition as a function of the SU(N) group and the respective fermionic representation. If the fermions that form the composite state are in the fundamental representation of the SU(N) group, we can generate such light boson only for one specific number of fermions for each group. In the case of small groups, like SU(2) to SU(5), and two fermions in the adjoint representation we find that is quite improbable to generate such light composite scalar.

24 pages, 5 figures, discussion extended, references added; version to appear in Phys. Rev. D

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Cited by in corpus (11)

• The Technicolor Higgs in the Light of LHC Data
• The Effect of Composite Resonances on Higgs decay into two photons
• Non-perturbative QCD effects in forward scattering at LHC
• Higgs Boson Phenomenology in a Simple Model with Vector Resonances
• QCD effective charges and the structure function $F_2$ at small-$x$: Higher twist effects
• Energy-dependent dipole form factor in a QCD-inspired model
• Schwinger-Dyson equation boundary conditions induced by ETC radiative corrections
• Schwinger-Dyson approach and its application to generate a light composite scalar
• The Extreme Walking Behavior in a 331-TC Model
• Limit on the pion distribution amplitude
• Fermion mass splitting in the technicolor coupled scenario