Göttingen 2025 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 18: Methods in Particle Physics I (Calo, Jets, Tagging)

T 18.2: Vortrag

Montag, 31. März 2025, 17:00–17:15, VG 4.101

Understanding punch-through effects on jet calibration using Run 2 and Run 3 data with the ATLAS detector — •Chiara Deponte and Chris Malena Delitzsch — Technische Universität Dortmund, Deutschland

At high energies, jets can penetrate beyond the calorimeter and deposit energy in the muon spectrometer, a phenomenon known as the punch-through. Since energy depositions in the muon spectrometer are not accounted for during jet reconstruction, the resulting jet energy tends to be smaller. To address this, corrections are applied during the jet energy calibration process to improve the jet energy resolution. In the ATLAS experiment, the Global Sequential Calibration mitigates punch-through effects by utilizing the number of muon segments associated with small-radius (R = 0.4) jets. The performance of this correction was studied using Monte Carlo simulation for Run 2 and 3, comparing both fast and full simulation.

Keywords: jet calibration; Global Sequential Calibration; punch-through