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CERN Accelerating science

ATLAS Slides
Report number ATL-PHYS-SLIDE-2016-362
Title Search for exotic production of top quarks decaying into same-sign leptons at 13 TeV
Author(s) Berlendis, Simon (Laboratoire de Physique Subatomique et de Cosmologie de Grenoble (LPSC))
Corporate author(s) The ATLAS collaboration
Collaboration ATLAS Collaboration
Submitted to 4th Conference on Large Hadron Collider Physics 2016 (LHCP 2016), Lund, Sweden, 13 - 18 Jun 2016
Submitted by simon.paul.berlendis@cern.ch on 22 Jun 2016
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Free keywords same-sign leptons ; top quarks ; four tops ; vector like quark ; 13TeV ; EXOTICS
Abstract The signature of two same-sign leptons and b-jets is a golden channel for the search for exotic productions of top quarks because of the low background from Standard Model. The main sources of background of same-sign leptons comes from lepton charge mis-reconstruction and fake/non-prompt leptons. Therefore, sophisticated data-driven techniques are needed to accurately estimate them. This contribution will give a complete description of the analysis strategy and will describe the different techniques used to estimate the backgrounds. Limits extracted for various models beyond the Standard Model will be shown with the 2015 proton-proton collisions data recorded at sqrt{s}=13 TeV with the ATLAS detector.



 Record created 2016-06-22, last modified 2018-04-27