A search for tt ¯ resonances with the ATLAS detector in 2.05 fb−1 of proton-proton collisions at √s = 7 TeV

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dc.contributor.authorKuday, Sinan
dc.contributor.authorYıldız (Duran), Hatice
dc.contributor.authorÇiftçi, Abbas Kenan
dc.contributor.authorÇiftçi, Rena
dc.contributor.authorÇakır, Orhan
dc.contributor.departmentFen Fakültesitr_TR
dc.date.accessioned2020-03-16T00:07:08Z
dc.date.available2020-03-16T00:07:08Z
dc.date.issued2012
dc.description.abstractA search for top quark pair resonances in final states containing at least one electron or muon has been performed with the ATLAS experiment at the CERN Large Hadron Collider. The search uses a data sample corresponding to an integrated luminosity of 2.05 fb−1, which was recorded in 2011 at a proton-proton centre-of-mass energy of 7 TeV. No evidence for a resonance is found and limits are set on the production cross-section times branching ratio to tt for narrow and wide resonances. For narrow Z′ bosons, the observed 95 % Bayesian credibility level limits range from 9.3 pb to 0.95 pb for masses in the range of mZ′ = 500 GeV to mZ ′= 1300 GeV. The corresponding excluded mass region for a leptophobic topcolour Z′ boson (Kaluza-Klein gluon excitation in the Randall-Sundrum model) is mZ < 880 GeV (mgKK < 1130 GeV). © CERN for the benefit of the ATLAS collaboration 2012.tr_TR
dc.description.indexwos
dc.description.indexScopus
dc.identifier.endpage23tr_TR
dc.identifier.issn/e-issn1434-6044
dc.identifier.issn/e-issn1434-6052
dc.identifier.issue7tr_TR
dc.identifier.other2083tr_TR
dc.identifier.startpage01tr_TR
dc.identifier.urihttps://doi.org/10.1140/epjc/s10052-012-2083-1tr_TR
dc.identifier.urihttp://hdl.handle.net/20.500.12575/70611
dc.identifier.volume72tr_TR
dc.language.isoentr_TR
dc.relation.isversionof10.1140/epjc/s10052-012-2083-1tr_TR
dc.relation.journalEuropean Physical Journal Ctr_TR
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıtr_TR
dc.titleA search for tt ¯ resonances with the ATLAS detector in 2.05 fb−1 of proton-proton collisions at √s = 7 TeVtr_TR
dc.typeArticletr_TR

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