Direct measurement of the top quark mass in $p\bar p$ collisions at D0

TL;DR

This paper reviews recent direct measurements of the top quark mass at the D0 experiment, achieving a precision of 0.3%, and discusses combined results with CDF to refine the top quark mass estimate.

Contribution

It presents the latest direct measurement techniques for the top quark mass and combines results from D0 and CDF to improve precision.

Findings

Achieved a top quark mass measurement with 0.3% relative precision.

Combined D0 and CDF results for a more accurate top quark mass.

Validated measurement methods in final states with one and two charged leptons.

Abstract

The mass of the top quark is a fundamental parameter of the Standard Model and has to be determined experimentally. In these proceedings, I review recent direct measurements of the top quark mass in $p\bar p$ collisions at $\sqrt s=1.96$ TeV recorded by the D0 experiment at the Tevatron. The measurements are performed in final states containing one and two charged leptons. I will present the legacy combination of all top quark mass measurements from the D0 experiment and their combination with results from the CDF experiment. A relative precision of down to 0.3\% is attained.