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We study the flavor structure of 5D warped models that provide a dualdescription of a composite pseudo-Goldstone Higgs. We first carefullyre-examine the flavor constraints on the mass scale of new physics in thestandard Randall-Sundrum-type scenarios, and find that the KK gluon mass shouldgenerically be heavier than about 21 TeV. We then compare the flavor structureof the composite Higgs models to those in the RS model. We find newcontributions to flavor violation, which while still are suppressed by theRS-GIM mechanism, will enhance the amplitudes of flavor violations. Inparticular, there is a kinetic mixing term among the SM fields which (althoughparametrically not enhanced) will make the flavor bounds even more stringentthan in RS. This together with the fact that in the pseudo-Goldstone scenarioYukawa couplings are set by a gauge coupling implies the KK gluon mass to be atleast about 33 TeV. For both the RS and the composite Higgs models the flavorbounds could be stronger or weaker depending on the assumption on the value ofthe gluon boundary kinetic term. These strong bounds seem to imply that thefully anarchic approach to flavor in warped extra dimensions is implausible,and there have to be at least some partial flavor symmetries appearing thateliminate part of the sources for flavor violation. We also present completeexpressions for the radiatively generated Higgs potential of various 5Dimplementations of the composite Higgs model, and comment on the 1-5 percentlevel tuning needed in the top sector to achieve a phenomenologicallyacceptable vacuum state.

The Flavor of the Composite Pseudo-Goldstone Higgs