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T: Fachverband Teilchenphysik

T 65: Experimental methods III

T 65.6: Vortrag

Mittwoch, 17. März 2021, 17:15–17:30, To

Performance of forward electrons in the ATLAS experiment — •Manuel Hohmann and Stefan Tapprogge — Institut für Physik, Johannes Gutenberg-Universtät, Mainz

Electrons are important objects both for the search for new physics and for precision measurements. In some cases, such as the determination of the effective weak mixing angle, the additional use of forward electrons (2.5<|η|<4.9) can provide a large gain in sensitivity and accuracy. To achieve such a gain, it is necessary to better understand the reconstructed and identified forward electrons and their performance, such as their identification efficiency and energy calibration. However, this is challenging because the forward region does not have a tracking system, so only calorimeter information is available. In this contribution, the analysis strategies used to obtain information on forward electrons are discussed and the status of current studies is presented. For the studies, a sample of forward electrons is selected by the tag-and-probe method using data from pp collisions in the ATLAS experiment collected at √s=13 TeV, corresponding to an integrated luminosity of 139 fb⁻¹.