Antonio E. Cárcamo-Hernández, Claudio O. Dib, Alfonso R. Zerwekh
In the context of strongly coupled electroweak symmetry breaking, heavy composite particles of different spin and parity may arise and cause observable effects at loop levels. We use an effective chiral lagrangian to describe the interactions amongst these composite resonances and the SM fields. We study the effects of the composite particles on the Higgs decay into two photons and on the oblique T and S parameters. Consistency with the T and S parameters and the newly observed Higgs decay into two photons can be found, for axial vector masses in the range 1.7 TeV to 2 TeV, and vector masses a factor 0.8 lower, provided a non standard kinetic mixing between the W3 and B0 fields is included.
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http://arxiv.org/abs/1304.0286
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