The role of charge and spin asymmetries in profiling Z'-> tt events

TL;DR

This paper investigates how charge and spin asymmetries in top quark pair production at the LHC can help identify the properties of a hypothetical Z' boson, considering realistic experimental effects.

Contribution

It introduces a method using asymmetry observables to differentiate Z' models based on their chiral couplings, accounting for background and interference effects.

Findings

Asymmetry observables effectively distinguish Z' models.

Full background and interference effects are included in the analysis.

Asymmetries show promise for Z' characterization at the LHC.

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 while assuming realistic final state reconstruction efficiencies. We demonstrate that exploiting asymmetry observables represents a promising way to distinguish between a selection of benchmark Z' models due to their unique dependences on the chiral couplings of the new gauge boson.