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T: Fachverband Teilchenphysik

T 56: Suche nach neuer Physik 2

T 56.1: Group Report

Thursday, March 1, 2012, 16:45–17:05, ZHG 101

Search for Scalar Leptoquarks Using the ATLAS Detector — •Jason Tam, Giovanni Siragusa, and Raimund Ströhmer — Julius-Maximilians Universität Würzburg

Similarities between the leptons and quarks in the SM suggest the existence of symmetries beyond the EW symmetry breaking scale. Leptoquarks (LQ) are hypothetical charged particles which carry both quark and lepton flavour quantum numbers. They appear naturally in many BSM theories and there has already been searches at previous collider experiments. A model independent search of pair-produced LQ, based on a effective theory, will be presented. The most recent results obtained with the ATLAS detector will be reported. Limits on the LQ mass, as a function of the branching ration into a jet and a charged lepton, will be derived.