Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/77010
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Type: Journal article
Title: A search for t(t) over-bar resonances in lepton plus jets events with highly boosted top quarks collected in pp collisions at √s = 7 TeV with the ATLAS detector
Other Titles: A search for t(t) over-bar resonances in lepton plus jets events with highly boosted top quarks collected in pp collisions at root s = 7 TeV with the ATLAS detector
Author: Jackson, P.
White, M.
Citation: The Journal of High Energy Physics, 2012; 2012(9):41-0-41-44
Publisher: Institute of Physics Publishing
Issue Date: 2012
ISSN: 1029-8479
1126-6708
Contributor: Jackson, Paul Douglas
Statement of
Responsibility: 
The ATLAS Collaboration
Abstract: A search for resonant production of high-mass top-quark pairs is performed on 2.05 fb−1 of proton-proton collisions at √s=7 TeV collected in 2011 with the ATLAS experiment at the Large Hadron Collider. This analysis of the lepton+jets final state is specifically designed for the particular topology that arises from the decay of highly boosted top quarks. The observed t(t) over-bar invariant mass spectrum is found to be compatible with the Standard Model prediction and 95% credibility level upper limits are derived on the t(t) over-bar production rate through new massive states. An upper limit of 0.7 pb is set on the production cross section times branching fraction of a narrow 1 TeV resonance. A Kaluza-Klein gluon with a mass smaller than 1.5 TeV is excluded.
Keywords: Hadron-Hadron Scattering
Description: Atlas Collaboration contributor: Paul Douglas Jackson of SLAC National Accelerator Laboratory, Stanford CA, United States of America.
Rights: Copyright CERN, for the benefit of the ATLAS collaboration
RMID: 0020126259
DOI: 10.1007/JHEP09(2012)041
Appears in Collections:Chemistry and Physics publications

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