Strategy towards Mirror-fermion Signatures

TL;DR

This paper explores experimental signals at future high-energy colliders to distinguish mirror-fermion models, which propose new fermions interacting via a novel gauge group near the electroweak scale, as an alternative to the Higgs mechanism.

Contribution

It identifies specific collider signatures necessary to differentiate mirror-fermion models from other new physics scenarios at future high-energy lepton colliders.

Findings

Mirror-fermion models predict unique collider signatures.

A 4 TeV or higher lepton collider can effectively test these signatures.

Distinct signals can help confirm or exclude mirror-fermion hypotheses.

Abstract

The existence of mirror fermions interacting strongly under a new gauge group and having masses near the electroweak scale has been recently proposed as a viable alternative to the standard-model Higgs mechanism. The main purpose of this work is to investigate which specific experimental signals are needed to clearly differentiate the mirror-fermion model from other new-physics models. In particular, the case is made for a future large lepton collider with c.o.m. energies of roughly 4 TeV or higher.