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Dortmund 2021 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 11: Search for Supersymmetry I

T 11.6: Vortrag

Montag, 15. März 2021, 17:15–17:30, Tk

New physics searches in tt+MET final states in pp collisions at 13 TeV with the ATLAS experiment — •Simran Gurdasani — Albert-Ludwigs-Universität Freiburg, Freiburg im Breisgau, Deutschland

This talk will report on preliminary results on a search for SUSY and Dark Matter particles with the ATLAS experiment at the LHC using 139 fb−1 of pp data at 13 TeV. The targeted signals are the productions of pairs of SUSY stop quarks and the production of DM candidates in associations with a pair of top quarks via a new scalar or pseudoscalar mediator, as predicted in DM simplified models or in 2HDM+a models. The search focuses on events with either an electron or a muon from the decay of one of the two top quarks. It will expand the reach of a previous similar analysis by adding a new sample of events using single lepton triggers and by deploying neural networks to reconstruct the momenta of the top quarks and to classify the signal and background events. The talk will give an overview of the physics motivation of the search and will report on the ongoing developments of the analysis.

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