A new observable to measure the top-quark mass at hadron colliders

TL;DR

This paper introduces a novel method for measuring the top-quark mass at hadron colliders using NLO QCD predictions of the tbaronejet cross section distribution, offering a potentially precise and theoretically well-defined approach.

Contribution

The paper presents a new observable based on the differential distribution of the tbaronejet cross section, enabling a complementary and theoretically robust top-quark mass measurement.

Findings

Method shows high sensitivity to top-quark mass.

Quantified impact of theoretical and experimental uncertainties.

Potential to achieve precision comparable to existing methods.

Abstract

A new method to measure the top-quark mass in high energetic hadron collisions is presented. We use theoretical predictions calculated at next-to-leading order accuracy in quantum chromodynamics to study the (normalized) differential distribution of the \ttbaronejet cross section with respect to its invariant mass $\sqrt{\sttj}$. The sensitivity of the method to the top-quark mass together with the impact of various theoretical and experimental uncertainties has been investigated and quantified. The new method allows for a complementary measurement of the top-quark mass parameter and has a high potential to become competitive in precision with respect to established approaches. Furthermore we emphasize that in the proposed method the mass parameter is uniquely defined through one-loop renormalization.