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Search for resonances decaying into top-quark pairs using fully hadronic decays in pp collisions with ATLAS at √s = 7 TeV

Author(s)
Taylor, Frank E.
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Abstract
A search for resonances produced in 7 TeV proton-proton collisions and decaying into top-quark pairs is described. In this Letter events where the top-quark decay produces two massive jets with large transverse momenta recorded with the ATLAS detector at the Large Hadron Collider are considered. Two techniques that rely on jet substructure are used to separate top-quark jets from those arising from light quarks and gluons. In addition, each massive jet is required to have evidence of an associated bottom-quark decay. The data are consistent with the Standard Model, and limits can be set on the production cross section times branching fraction of a Z′ boson and a Kaluza-Klein gluon resonance. These limits exclude, at the 95% credibility level, Z′ bosons with masses 0.70-1.00 TeV as well as 1.28-1.32 TeV and Kaluza-Klein gluons with masses 0.70-1.62 TeV.
Date issued
2013-01
URI
http://hdl.handle.net/1721.1/86129
Department
Massachusetts Institute of Technology. Department of Physics
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 Resonances Decaying into Top-Quark Pairs Using Fully Hadronic Decays in Pp Collisions with ATLAS at √s = 7 TeV.” J. High Energ. Phys. 2013, no. 1 (January 2013). © CERN, for the benefit of the ATLAS collective
Version: Final published version
ISSN
1029-8479
1126-6708

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