Z' signals in polarised top-antitop final states at the LHC

TL;DR

This paper investigates how asymmetry observables in top-antitop production at the LHC can effectively differentiate between various Z' boson models by analyzing their chiral coupling signatures, accounting for background effects.

Contribution

It introduces a comprehensive analysis of Z' signals in polarized top-antitop states, including background effects and realistic reconstruction, highlighting asymmetry observables as a key discriminant.

Findings

Asymmetry observables can distinguish Z' models based on chiral couplings.

Full background effects and interferences are crucial for accurate sensitivity analysis.

Polarized top-antitop states enhance the detection prospects of Z' signals.

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