Composite Higgs models in disguise

Understand

We present a mechanism for disguising one composite Higgs model as another.

• Allowing the global symmetry of the strong sector to be broken by large mixings with elementary fields, we show that we can disguise one coset $\mathcal G/\mathcal H$ such that at low energies the phenomenology of the model is better described with a different coset $\mathcal G'/\mathcal H'$.
• Extra scalar fields acquire masses comparable to the rest of the strong sector resonances and therefore are no longer considered pNGBs.
• Following this procedure we demonstrate that two models with promising UV-completions can be disguised as the more minimal $SO(5)/SO(4)$ coset.