Search for a heavy top-quark partner in final states with two leptons with the ATLAS detector at the LHC
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Taylor_Search for a heavy top-quark.pdf
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Author(s)
Taylor, Frank E.
Date Issued
November 2012
Journal
Journal of High Energy Physics
Publisher
Springer-Verlag
Citation
Aad, G., T. Abajyan, B. Abbott, J. Abdallah, S. Abdel Khalek, A. A. Abdelalim, O. Abdinov, et al. “Search for a heavy top-quark partner in final states with two leptons with the ATLAS detector at the LHC.” Journal of High Energy Physics 2012, no. 11 (November 16, 2012). © CERN, for the benefi t of the ATLAS collaboration
Version
Final published version
Abstract
The results of a search for direct pair production of heavy top-quark partners in 4.7 fb[superscript −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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1007/jhep11(2012)094
