Higgs decay into diphoton in the Composite Higgs Model
Abstract
We explore the Higgs couplings to gauge bosons in the minimal SO(5)/SO(4) 4D composite Higgs model. The pions scatterings put unitary constraints on the couplings and therefore determine the branch ratios of various Higgs decays. Through fine tuning the parameters, enhancement of Higgs to diphoton rate is possible to be achieved with the existence of vector meson fields.
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