Münster 2017 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

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

T 63.6: Vortrag

Dienstag, 28. März 2017, 18:05–18:20, JUR 253

Studies on Matching of Trajectories of charged Particles and Energy Deposits in the electromagnetic Calorimeter during Electron Reconstruction in ATLAS — •Ralf Gugel, Karl Jakobs, and Karsten Köneke — Albert-Ludwigs-Universität Freiburg

An important test of the Standard Model is given by the investigation of the scattering of two W bosons. This process can be studied in final states with two same-charge leptons WW→ ℓ^±ν ℓ′^±ν′. These final states vastly reduce contributions from background processes compared to the different-charge case. The remaining background contributions in the same-charge final state are dominated by different-charge events in which the charge of one of the electrons is misreconstructed. Studies are shown trying to reduce these backgrounds through an improved matching algorithm for cases where multiple reconstructed charged-particle trajectories are found in the vicinity of an energy deposit in the electromagnetic calorimeter.