Distinguishing Z' models with polarised top pairs

TL;DR

This paper investigates how polarized top pair production at the LHC can be used to differentiate between various Z' boson models by analyzing asymmetry observables, considering realistic experimental conditions.

Contribution

It introduces a method to distinguish Z' models using asymmetry observables in top pair production, accounting for background effects and realistic detection efficiencies.

Findings

Asymmetry observables can differentiate Z' models at the LHC.

Full background and interference effects are crucial for accurate analysis.

The approach is feasible with realistic experimental assumptions.

Abstract

We study the sensitivity of top pair production at the Large Hadron Collider (LHC) to the nature of an underlying Z' boson, including full tree level standard model background effects and interferences. We demonstrate that exploiting combinations of asymmetry observables will enable one to distinguish between a selection of `benchmark' Z' models while assuming realistic final state reconstruction efficiencies and error estimates.