Please use this identifier to cite or link to this item:
https://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 |
DOI: | 10.1007/JHEP09(2012)041 |
Published version: | http://dx.doi.org/10.1007/JHEP09(2012)041 |
Appears in Collections: | Aurora harvest 4 Chemistry and Physics publications |
Files in This Item:
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hdl_77010.pdf | Published version | 1.11 MB | Adobe PDF | View/Open |
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