Measurement of the t(t)over-barb(b)over-bar Production Cross Section İn The All-Jet Final State in pp Collisions at Root s=13 TeV

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dc.authorid249433en_US
dc.contributor.authorBilki, Burak
dc.contributor.author., ve diğer.
dc.date.accessioned2020-10-13T12:46:24Z
dc.date.available2020-10-13T12:46:24Z
dc.date.issued2020
dc.departmentİstanbul Beykent Üniversitesien_US
dc.description.abstractA measurement of the production cross section of top quark pairs in association with two b jets (t (t) over barb (b) over bar) is presented using data collected in proton-proton collisions at root s=13 TeV by the CMS detector at the LHC corresponding to an integrated luminosity of 35.9 fb(-1). The cross section is measured in the all-jet decay channel of the top quark pair by selecting events containing at least eight jets, of which at least two are identified as originating from the hadronization of b quarks. A combination of multivariate analysis techniques is used to reduce the large background from multijet events not containing a top quark pair, and to help discriminate between jets originating from top quark decays and other additional jets. The cross section is determined for the total phase space to be 5.5 +/- 0.3 (stat)(-1.3)(+)(1.6) (syst)pb and also measured for two fiducial t (t) over barb (b) over bar, definitions. The measured cross sections are found to be larger than theoretical predictions by a factor of 1.5-2.4, corresponding to 1-2 standard deviations. (C) 2020 The Author. Published by Elsevier B.V.en_US
dc.identifier.citationPhysıcs Letters B, 803, 135285, 2020en_US
dc.identifier.doi10.1016/j.physletb.2020.135285
dc.identifier.issn1029-8479
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1016/j.physletb.2020.135285
dc.identifier.wosWOS:000521730300041en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherThe CMS Collaborationen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.subjectCMSen_US
dc.subjectPhysicsen_US
dc.subjectTopen_US
dc.subjectMeasurementen_US
dc.titleMeasurement of the t(t)over-barb(b)over-bar Production Cross Section İn The All-Jet Final State in pp Collisions at Root s=13 TeVen_US
dc.typeArticleen_US

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