Abstract: I present the minimal QCD-like composite Higgs boson scenario based upon a phenomenologically consistent 3-flavor Dirac ultraviolet completion and confined SU(2) dynamics. The scales of spontaneous breaking of the global chiral SU(3)_L * SU(3)_R and local electroweak SU(2)_W * U(1)_Y symmetries are largely separated which provides a consistency of the model with electroweak precision tests and a specific fine structure of the predicted composite Higgs signal. This study suggests the characteristic features in the low gamma gamma invariant mass spectrum such as a double-peak structure of the observed Higgs signal and quasi-degenerated low-mass narrow pseudo-Goldstone resonances. The search for these low-mass features is highly relevant for potential discovery of the dynamical electroweak symmetry breaking and, in general, for the ongoing hunt for Higgs partners at the LHC.
Roman Pasechnik (THEP - Lund U.)