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T: Fachverband Teilchenphysik

T 36: Top-Quark: Zerfälle

T 36.7: Talk

Friday, March 2, 2012, 10:15–10:30, ZHG 104

HEPTopTagger Optimisation Studies — •David Sosa, Gregor Kasieczka, Sebastian Schätzel, and André Schöning — Physikalisches Institut, Universität Heidelberg

The HEPTopTagger is an algorithm designed to identify hadronically decaying top quarks on an event-by-event basis. The performance of the HEPTopTagger is optimised by tuning internal parameters of the algorithm for the largest signal-to-background ratio and highest signal efficiency in a sample selected to contain semi-leptonic top-antitop decays.

This talk shows optimisation results obtained on Monte Carlo-simulated events which are validated using the full 2011 ATLAS dataset.