Partially Strong WW Scattering

TL;DR

This paper explores scenarios where, despite a light Higgs boson, weak gauge boson scattering remains partially strong at high energies, indicating potential new physics beyond the Standard Model.

Contribution

It demonstrates that a light Higgs does not always fully unitarize WW scattering, highlighting the possibility of partial strong interactions detectable at the LHC.

Findings

Light Higgs may not fully unitarize WW scattering.

Partial strong WW scattering can occur in various models.

LHC can potentially observe signs of partial strong scattering.

Abstract

What if only a light Higgs boson is discovered at the CERN LHC? Conventional wisdom tells us that the scattering of longitudinal weak gauge bosons would not grow strong at high energies. We show that this is not always true. In some composite models, two-Higgs-doublet models, or even supersymmetric models, the presence of a light Higgs boson does not guarantee the complete unitarization of the $WW$ scattering. After the partial unitarization by the light Higgs boson, the $WW$ scattering becomes strongly interacting until it hits one or more heavier Higgs bosons or other strong dynamics. We analyze how the LHC experiments can reveal this interesting possibility of partially strong $WW$ scattering.