Münster 2017 – scientific programme

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T: Fachverband Teilchenphysik

T 63: Experimentelle Methoden 2 (Flavour-,Photon,Elektronidentifikation)

T 63.3: Talk

Tuesday, March 28, 2017, 17:20–17:35, JUR 253

Measurement of electron identification efficiencies in the ATLAS detector — •Elias Rüttinger — DESY, Zeuthen

Most physics analysis using data collected by the ATLAS detector in 2016 with a center of mass energy √s = 13 TeV need a deep understanding of electron identification requirements. Therefore efficiency corrections are applied to account for differences between the data and the Monte Carlo Modelling using using detector simulation. It is crucial for the measurements of the efficiencies to be as precise as possible. The uncertainties and their sources need to be well defined in order to estimate their influence on the estimated total error. Possible sources of systematic errors are the applied background subtraction or kinematic biases due to energy losses of electron candidates. These energy losses arise from bremsstrahlung in the magnetic field of the detector or of its material.

An overview over electron identification measurements using the signature of the Z boson is presented, as well as studies on the mentioned systematic sources.