Signatures of Non-Standard Electroweak Symmetry Breaking

TL;DR

This paper discusses non-standard electroweak symmetry breaking scenarios predicting spin-two resonances from extra dimensions or strong interactions, and explores how to distinguish between these models and their holographic duals.

Contribution

It provides a comparison of spin-two resonances from different origins and proposes methods to differentiate between extra-dimensional and strongly interacting theories.

Findings

Spin-two resonances can originate from extra dimensions or strong interactions.

Interactions of these resonances are constrained by Lorentz and CP invariance.

A method to distinguish between dual theories is proposed.

Abstract

This is the write-up of a talk given at the EW session in Moriond (March 2012). I summarize some non-standard electroweak scenarios, and how they predict the existence of new spin-two resonances. Spin-two resonances, whether coming from the compactification of extra-dimensions or from a new sector of strong interactions, exhibit the same interactions with the Standard Model. This is a consequence of Lorentz and CP invariance, which we assume would be preserved by the new strong sector. Although this would seem to support the holographic duality between strongly interacting theories in four-dimensions and extra-dimensional theories, I show that there is a way to distinguish between the two sides of the "duality", which constitutes an explicit example of its breakdown.