Top-quark mass measurements: Alternative techniques (LHC + Tevatron)

TL;DR

This paper reviews various alternative techniques for measuring the top-quark mass across different experiments, including methods based on decay properties, kinematic endpoints, cross-section analyses, and single top production, providing a comprehensive overview of recent advancements.

Contribution

It introduces and compares multiple novel approaches for top-quark mass measurement, expanding beyond traditional methods and integrating results from Tevatron and LHC experiments.

Findings

Consistent top-quark mass measurements across different methods.

New techniques utilizing $B$-hadron lifetime and lepton transverse momentum.

Extraction of the top-quark pole mass from cross-section data.

Abstract

Measurements of the top-quark mass employing alternative techniques are presented, performed by the D0 and CDF collaborations at the Tevatron as well as the ATLAS and CMS experiments at the LHC. The alternative methods presented include measurements using the lifetime of $B$-hadrons, the transverse momentum of charged leptons and the endpoints of kinematic distributions in top quark anti-quark pair ($t\bar{t}$) final states. The extraction of the top-quark pole mass from the $t\bar{t}$ production cross-section and the normalized differential $t\bar{t}$ + 1-jet cross-section are discussed as well as the top-quark mass extraction using fixed-order QCD predictions at detector level. Finally, a measurement of the top-quark mass using events enhanced in single top t-channel production is presented.