Possible new resonance from $W_L W_L$-$hh$ interchannel coupling

TL;DR

This paper predicts a potential new resonance in electroweak scattering caused by strong interchannel coupling between Higgs and W_L W_L channels, analyzed through unitarity and dispersion relations.

Contribution

It introduces a theoretical framework for a possible new resonance arising from Higgs and W_L W_L channel coupling using the Inverse Amplitude Method.

Findings

Identification of a potential new resonance due to channel coupling.

Application of unitarity and dispersion relations to electroweak scattering.

Use of the Electroweak Chiral Lagrangian with a scalar Higgs.

Abstract

We propose and theoretically study a possible new resonance caused by strong coupling between the Higgs-Higgs and the W_L W_L (Z_L Z_L) scattering channels, without regard to the intensity of the elastic interaction in either channel at low energy (that could be weak as in the Standard Model). We expose this channel-coupling resonance from unitarity and dispersion relations encoded in the Inverse Amplitude Method, applied to the Electroweak Chiral Lagrangian with a scalar Higgs.