Probing Near-Conformal Technicolor through Weak Boson Scattering

TL;DR

This paper explores how near-conformal technicolor models, featuring a composite Higgs, can be tested through enhanced weak boson scattering processes at the LHC, providing a new way to probe technicolor dynamics indirectly.

Contribution

It demonstrates that weak boson scattering can reveal signatures of near-conformal technicolor, especially in regimes where direct resonance production is challenging.

Findings

Enhanced $pp o VV jj$ processes indicate strong unitarization effects.

Probing technicolor couplings and masses beyond direct Drell-Yan reach.

Potential to distinguish technicolor models from the standard model.

Abstract

The recently observed boson at 125 GeV could be a light composite scalar from near-conformal technicolor dynamics: a technicolor Higgs. If this is the case, unitarization of longitudinal weak boson scattering amplitudes, which is due to exchanges of the Higgs and spin-one vector technimesons, is expected to occur in a strong regime, with saturation of the unitarity bounds. This implies that $pp \to V V jj$ processes, where $V$ is either a $W$ or a $Z$ boson, are enhanced, relative to the standard model. We show that this allows probing near-conformal technicolor for couplings and masses of the spin-one resonances which are not directly accessible for direct Drell-Yan production.