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Type: Journal article
Title: Search for a heavy top-quark partner in final states with two leptons with the ATLAS detector at the LHC
Author: Jackson, P.
Soni, N.
White, M.
Citation: The Journal of High Energy Physics, 2012; 2012(11):94-1-94-34
Publisher: Institute of Physics Publishing
Issue Date: 2012
ISSN: 1029-8479
Contributor: Jackson, Paul Douglas
Soni, Nitesh
Statement of
The ATLAS Collaboration
Abstract: The results of a search for direct pair production of heavy top-quark partners in 4.7 fb⁻¹ of integrated luminosity from pp collisions at √s = 7 TeV collected by the ATLAS detector at the LHC are reported. Heavy top-quark partners decaying into a top quark and a neutral non-interacting particle are searched for in events with two leptons in the final state. No excess above the Standard Model expectation is observed. Limits are placed on the mass of a supersymmetric scalar top and of a spin-1/2 top-quark partner. A spin-1/2 top-quark partner with a mass between 300 GeV and 480 GeV, decaying to a top quark and a neutral non-interacting particle lighter than 100 GeV, is excluded at 95% confidence level.
Description: Atlas Collaboration contributor: Paul Douglas Jackson and Nitesh Soni of School of Chemistry and Physics, University of Adelaide, North Terrace Campus, 5000, SA, Australia. Extent: 35p.
Rights: Copyright CERN, for the benefit of the ATLAS collaboration
DOI: 10.1007/JHEP11(2012)094
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