Aachen 2019 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 65: Experimentelle Methoden II
T 65.1: Vortrag
Mittwoch, 27. März 2019, 16:00–16:15, S01
Performance of the ATLAS- Muon spectrometer in Run-II — •Johannes Junggeburth1, Hubert Kroha1, Nicolas Koehler1 und Maximilian Goblirsch-Kolb2 — 1Max-Planck Institut für Physik, München — 2Brandeis University, USA
The large LHC Run-2 dataset comprising 150 fb−1 marks the beginning of an era where precision measurements increasingly become limited by systematic uncertainties. This necessitates improved precision in the understanding of detector performance in both collision data and simulation. The muon reconstruction efficiency is measured using a so-called tag&probe method exploiting the Z→µµ and J/ψ resonances. This talk presents the latest developments in the Z→µµ muon efficiency measurement allowing to reach a precision below 0.1%. The evolution of the ATLAS Muon spectrometer performance during the Run-2 data-taking is discussed in addition.