Bonn 2010 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 49: Supersymmetrie II

T 49.6: Vortrag

Mittwoch, 17. März 2010, 15:15–15:30, HG I

Early Supersymmetry Searches in the 1-Lepton Channel with the Atlas Detector — •Keith Edmonds, Volker Büscher, and Marc Hohlfeld — Institut für Physik, Johannes Gutenberg-Universität, Mainz

One of the most important goals for ATLAS at the LHC is the search for new physics beyond the standard model. Supersymmetry is one of the favored theories for discovery at the LHC. This talk will focus on early Supersymmetry searches for squark and gluino production. It is expected that searches in the final state of "multiple jets + missing transverse energy + e / µ" will provide excellent prospects for early discovery of many supersymmetric models. The techniques used to identify such a signal within a realistic experimental environment are discussed.

Top antitop production is the most significant background for this signal. Methods for reducing this background are discussed for each of the top antitop decay chains. Particular focus is put on how the lepton selection can be tuned to reduce the di-leptonic top antitop background. This method naturally incorporates techniques used to identify and remove fake or misidentified objects.

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