ZZH coupling : A probe to the origin of EWSB ?

Abstract

We argue that the $ZZH$ coupling constitutes a simple probe of the nature of the scalar sector responsible for electroweak symmetry breaking. We demonstrate the efficacy of this measure through an analysis of four-dimensional models containing scalars in arbitrary representation of $SU(2)\times U(1)$, as well as extra-dimensional models with a non-factorizable geometry. A possible role for the $t\bar{t}H$ couplings is also discussed.

Minor modifications in the text. Version to appear in Nucl. Phys. B

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