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dc.contributor.authorKuday, Sinan
dc.contributor.authorYıldız (Duran), Hatice
dc.contributor.authorÇiftçi, Rena
dc.contributor.authorÇiftçi, Abbas Kenan
dc.contributor.authorÇakır, Orhan
dc.date.accessioned2020-03-15T23:51:15Z
dc.date.available2020-03-15T23:51:15Z
dc.date.issued2012
dc.identifier.urihttps://doi.org/10.1016/j.physletb.2012.08.011tr_TR
dc.identifier.urihttp://hdl.handle.net/20.500.12575/70609
dc.description.abstractThis Letter presents evidence for the associated production of a W boson and a top quark using 2.05 fb−1 of pp collision data at s=7TeV accumulated with the ATLAS detector at the LHC. The analysis is based on the selection of the dileptonic final states with events featuring two isolated leptons, electron or muon, with significant transverse missing momentum and at least one jet. An approach based on boosted decision trees has been developed to improve the discrimination of single top-quark Wt events from background. A template fit to the final classifier distributions is performed to determine the cross-section. The result is incompatible with the background-only hypothesis at the 3.3σ level, the expected sensitivity assuming the Standard Model production rate being 3.4σ. The corresponding cross-section is determined and found to be σWt=16.8±2.9 (stat)±4.9 (syst) pb, in good agreement with the Standard Model expectation. From this result the CKM matrix element |Vtb|=1.03−0.19 +0.16 is derived assuming that the Wt production through |Vts| and |Vtd| is small. © 2012 CERNtr_TR
dc.language.isoentr_TR
dc.relation.isversionof10.1016/j.physletb.2012.08.011tr_TR
dc.titleEvidence for the associated production of a √ W boson and a top quark in ATLAS at s = 7 TeV ✩tr_TR
dc.typeArticletr_TR
dc.relation.journalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physicstr_TR
dc.contributor.departmentFen Fakültesitr_TR
dc.identifier.volume716tr_TR
dc.identifier.issue1tr_TR
dc.identifier.startpage142tr_TR
dc.identifier.endpage159tr_TR
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıtr_TR
dc.identifier.issn/e-issn0370-2693
dc.description.indexwos
dc.description.indexScopus


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