# Extracting the Top-Quark Width from Non-Resonant Production

## TL;DR

This paper introduces a novel method to directly measure the top-quark width using off-resonance events, achieving the most precise direct measurement to date with a new dataset analysis.

## Contribution

A new approach utilizing off-resonance events is proposed, improving the precision of direct top-quark width measurements beyond previous methods.

## Key findings

- Measured top-quark width as 1.28 ± 0.30 GeV.
- Expected precision was 1.33 ± 0.29 GeV.
- Provides the most accurate direct measurement of the top-quark width.

## Abstract

In the context of the Standard Model (SM) of particle physics, the relationship between the top-quark mass and width ($\Gamma_t$) has been precisely calculated. However, the uncertainty from current direct measurements of the width is nearly 50%. A new approach for directly measuring the top-quark width using events away from the resonance peak is presented. By using an orthogonal dataset to traditional top-quark width extractions, this new method may enable significant improvements in the experimental sensitivity in a method combination. Recasting a recent ATLAS differential cross section measurement, we find $\Gamma_t$ = 1.28 $\pm$ 0.30 GeV (1.33 $\pm$ 0.29 GeV expected), providing the most precise direct measurement of the width.