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.

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