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Wuppertal 2015 – scientific programme

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T: Fachverband Teilchenphysik

T 64: Kalorimeter 2

T 64.3: Talk

Wednesday, March 11, 2015, 17:15–17:30, G.10.03 (HS 8)

Energy Calibration of the Electromagnetic Forward Calorimeters in ATLASFrank Ellinghaus, •Simon Schmitz, and Stefan Tapprogge for the ATLAS collaboration — Institut für Physik, Johannes-Gutenberg Universität Mainz

The electromagnetic forward calorimeters of the ATLAS detector are responsible for the measurement of the energy of electrons in the region from 2.5 < |η| < 4.9. In this so called forward region tracking coverage is not available implying that electrons need to be reconstructed and identified by calorimetric information only. A calibration of the electromagnetic forward calorimeters is of importance for many electroweak measurements and searches for new physics.

The energy calibration is based on an integrated luminosity of 20.3 fb−1 of proton-proton collision data at √s = 8 TeV recorded with the ATLAS detector in 2012. A selection of Zee events with one electron in the forward region and one electron in the more central region is performed to compare the shape of the Z resonance in data and simulations. This talk discusses the detailed approach to accomplish the calibration of the electromagnetic forward calorimeters in ATLAS.

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