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A Search for ttbar Resonances in the Dilepton Channel in 1.04/fb of pp Collisions at sqrt(s) = 7 TeV
This poster presents a search for a high mass ttbar resonance in pp collisions at sqrt(s) = 7 TeV at the LHC. We search for such a resonance using the final state where both W bosons from the top quark decay into either an electron and electron-neutrino or a muon and muon-neutrino (dilepton final st...
Autores principales: | , , , , , , , , |
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Lenguaje: | eng |
Publicado: |
2011
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Materias: | |
Acceso en línea: | http://cds.cern.ch/record/1386679 |
_version_ | 1780923229983997952 |
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author | Petteni, M Stelzer, B Stelzer-Chilton, O Swedish, S Boudreau, M Barta, R Pollard, C Kotwal, A Gay, C |
author_facet | Petteni, M Stelzer, B Stelzer-Chilton, O Swedish, S Boudreau, M Barta, R Pollard, C Kotwal, A Gay, C |
author_sort | Petteni, M |
collection | CERN |
description | This poster presents a search for a high mass ttbar resonance in pp collisions at sqrt(s) = 7 TeV at the LHC. We search for such a resonance using the final state where both W bosons from the top quark decay into either an electron and electron-neutrino or a muon and muon-neutrino (dilepton final state). The data were recorded by the ATLAS experiment during 2011 and correspond to a total integrated luminosity of 1.04/fb. No statistically significant excess above the Standard Model expectation is observed. Upper limits at the 95% Confidence Limit (C.L) are set on the cross section times branching ratio of the resonance decaying to ttˉ pairs as a function of the resonance pole mass. A lower mass limit of 0.84~TeV is set for the case of a Kaluza Klein gluon resonance in the Randall-Sundrum Model. |
id | cern-1386679 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2011 |
record_format | invenio |
spelling | cern-13866792019-09-30T06:29:59Zhttp://cds.cern.ch/record/1386679engPetteni, MStelzer, BStelzer-Chilton, OSwedish, SBoudreau, MBarta, RPollard, CKotwal, AGay, CA Search for ttbar Resonances in the Dilepton Channel in 1.04/fb of pp Collisions at sqrt(s) = 7 TeVDetectors and Experimental TechniquesThis poster presents a search for a high mass ttbar resonance in pp collisions at sqrt(s) = 7 TeV at the LHC. We search for such a resonance using the final state where both W bosons from the top quark decay into either an electron and electron-neutrino or a muon and muon-neutrino (dilepton final state). The data were recorded by the ATLAS experiment during 2011 and correspond to a total integrated luminosity of 1.04/fb. No statistically significant excess above the Standard Model expectation is observed. Upper limits at the 95% Confidence Limit (C.L) are set on the cross section times branching ratio of the resonance decaying to ttˉ pairs as a function of the resonance pole mass. A lower mass limit of 0.84~TeV is set for the case of a Kaluza Klein gluon resonance in the Randall-Sundrum Model.ATL-PHYS-SLIDE-2011-616oai:cds.cern.ch:13866792011-09-30 |
spellingShingle | Detectors and Experimental Techniques Petteni, M Stelzer, B Stelzer-Chilton, O Swedish, S Boudreau, M Barta, R Pollard, C Kotwal, A Gay, C A Search for ttbar Resonances in the Dilepton Channel in 1.04/fb of pp Collisions at sqrt(s) = 7 TeV |
title | A Search for ttbar Resonances in the Dilepton Channel in 1.04/fb of pp Collisions at sqrt(s) = 7 TeV |
title_full | A Search for ttbar Resonances in the Dilepton Channel in 1.04/fb of pp Collisions at sqrt(s) = 7 TeV |
title_fullStr | A Search for ttbar Resonances in the Dilepton Channel in 1.04/fb of pp Collisions at sqrt(s) = 7 TeV |
title_full_unstemmed | A Search for ttbar Resonances in the Dilepton Channel in 1.04/fb of pp Collisions at sqrt(s) = 7 TeV |
title_short | A Search for ttbar Resonances in the Dilepton Channel in 1.04/fb of pp Collisions at sqrt(s) = 7 TeV |
title_sort | search for ttbar resonances in the dilepton channel in 1.04/fb of pp collisions at sqrt(s) = 7 tev |
topic | Detectors and Experimental Techniques |
url | http://cds.cern.ch/record/1386679 |
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