Indirect Sensitivity to Heavy Z' Bosons at a Multi-TeV e+e- Collider

TL;DR

This paper explores how future multi-TeV e+e- colliders can indirectly detect heavy Z' bosons and composite Higgs states through their subtle effects, even if these particles are beyond direct production reach.

Contribution

It compares the phenomenology of minimal Z' models and composite Higgs models at high-energy colliders, highlighting indirect sensitivity to new physics.

Findings

Potential to detect heavy Z' bosons indirectly

Distinct signatures for composite Higgs states

Enhanced sensitivity at multi-TeV energies

Abstract

We compare the phenomenology of two models, the so-called minimal Z' and an effective model for a SM-like Higgs realised as a composite state of a new strong interaction, at a multi-TeV linear collider in the hypothesis that the new physics is at a scale beyond the direct reach of the machine.