Würzburg 2018 – scientific programme

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T: Fachverband Teilchenphysik

T 85: Experimentelle Methoden III

T 85.9: Talk

Thursday, March 22, 2018, 18:35–18:50, Z6 - SR 1.013

Determining systematic uncertainties of boosted tau pair reconstruction and identification efficiencies in ATLAS — •Fabian Petsch, Christian Wiel, David Kirchmeier, Arno Straessner, and Wolfgang Mader — IKTP, Dresden, Deutschland

Tau reconstruction and identification plays an important role in the search for new physics in the ATLAS experiment at the LHC. Pairs of tau leptons with a boosted topology are produced in some channels and are possible final states in BSM scenarios, such as a graviton decaying into two Higgs particles. Since the two taus may be characterized by a low spatial separation, standard tau identification is not possible in this regime. Therefore a special approach for reconstruction and identification of boosted tau pair topologies has been developed. This talk focusses on semi-leptonic di-taus as final states. The calculation of systematic uncertainties for the reconstrucion and identification efficiencies using various simulated detector modifications is presented.