LHC sensitivity to Z'/W' states in composite Higgs models

TL;DR

This paper evaluates the LHC's ability to detect broad $Z'$ and $W'$ resonances predicted by the 4DCHM, emphasizing how reducing systematic uncertainties improves search sensitivity.

Contribution

It demonstrates how combining precise SM measurements can significantly enhance the LHC's sensitivity to new broad resonance signals in composite Higgs models.

Findings

Systematic uncertainties from QCD effects impact search sensitivity.

Combining high-precision measurements reduces uncertainties.

Enhanced sensitivity to $Z'$ and $W'$ signals in leptonic channels.

Abstract

Using the 4-Dimensional Composite Higgs Model (4DCHM) realization of the minimal composite Higgs scenario, we discuss the Large Hadron Collider (LHC) sensitivity to new physics signals from multiple $Z^\prime$ and $W^\prime$ broad resonances. We illustrate the role of systematic uncertainties due to QCD effects encoded in parton distribution functions for experimental searches in leptonic channels. We show that, by reducing this systematics through the combination of high-precision measurements of Standard Model (SM) lepton-charge and forward-backward asymmetries near the SM vector-boson peak, the sensitivity to the new physics signals can be greatly enhanced.