Measurements of the Top Quark Mass at ATLAS and CMS

TL;DR

This paper reports precise measurements of the top quark mass from ATLAS and CMS across various channels, utilizing calibrated observables and combining results to achieve sub-GeV accuracy.

Contribution

It provides the latest top quark mass measurements using multiple decay channels and a novel topology, enhancing precision through calibration and combination techniques.

Findings

Top quark mass measured with sub-GeV precision.

Multiple decay channels analyzed for consistency.

Results improve the accuracy of the top mass value.

Abstract

We present recent measurements of the top quark mass by the ATLAS and CMS experiments in the $\mathrm{t}\overline{\mathrm{t}}$ lepton+jets, all-hadronic, and dilepton channels. In addition, we present a measurement using a topology enriched in t-channel single top events. The analyses include observables whose sensitivity to the top mass is calibrated using Monte Carlo simulation before they are utilized to extract the value of $\mathrm{m}_{\mathrm{t}}$ in data. The measurements outlined here enter into recent combinations by ATLAS and CMS that yield a sub-GeV precision on the top mass.