Speaker: Frédéric Derue
Laboratoire de Physique Nucléaire et de Hautes Energies (LPHNE), Paris, France
Sorbonne Université, Université de Paris, CNRS/IN2P3

Title: “ATLAS results on top quark mass”

Abstract:
The top quark is the heaviest elementary particle known and its mass is a fundamental parameter of the Standard Model. The main theoretical and experimental challenges related to this measurement are presented. Masses from different ATLAS measurements are in good agreement within uncertainties. Precision of the measurements with the directly measured top-quark mass is now better than 0.5%. Progress in determination of the top-quark pole mass is reported and the relation between the directly measured top-quark mass and top-quark pole mass is discussed. Related measurements allowing for better tuning of modelling uncertainties are also presented.
Finally, ideas and prospects for the improvement of the precision of this measurement during the upcoming LHC runs are briefly outlined.