Speaker
Description
The measurement of the ATLAS calorimeter response E/pT is performed for single charged pions with a transverse momentum (pT ) ranging from 10 to 300 GeV using 139 fb−1 of proton-proton collision data at √s=13 TeV taken in RUN 2 by the ATLAS detector of the Large Hadron Collider (LHC) [1]. The use of charged pions originating from τ-lepton decays allows the measurement of the response of the calorimeter in the high pT regime. In the ATLAS simulation, this response is found to be approximately 2% overestimated in the central region and 4% underestimated in the endcaps. The uncertainties in the measurements in the central region are less than 1% for pT ranging from 15 to 185 GeV and reach 0.6% in the most precise region. A brief introduction about the ATLAS calorimeter will be presented, followed by a description of the event selection. The energy response as well as the uncertainties in the measurements will also be evaluated [2].
References
[1] ATLAS Collaboration, The ATLAS Experiment at the CERN Large Hadron Collider
URL: https://cds.cern.ch/record/1129811
[2] Measurement of the Energy Response of the ATLAS Calorimeter to Charged Pions from W ± →τ ±(→ π±ντ )ντ Events in Run 2 data : CERN-EP-2021-147
URL: https://cds.cern.ch/record/2778857
| Abstract Category | Instrumentaions & Detectors |
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