Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/115046
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dc.contributor.authorAaboud, M.-
dc.contributor.authorAad, G.-
dc.contributor.authorAbbott, B.-
dc.contributor.authorAbdinov, O.-
dc.contributor.authorAbeloos, B.-
dc.contributor.authorAbidi, S.H.-
dc.contributor.authorAbouZeid, O.S.-
dc.contributor.authorAbraham, N.L.-
dc.contributor.authorAbramowicz, H.-
dc.contributor.authorAbreu, H.-
dc.contributor.authorAbreu, R.-
dc.contributor.authorAbulaiti, Y.-
dc.contributor.authorAcharya, B.S.-
dc.contributor.authorAdachi, S.-
dc.contributor.authorAdamczyk, L.-
dc.contributor.authorAdelman, J.-
dc.contributor.authorAdersberger, M.-
dc.contributor.authorAdye, T.-
dc.contributor.authorAffolder, A.A.-
dc.contributor.authorAfik, Y.-
dc.contributor.authoret al.-
dc.date.issued2018-
dc.identifier.citationEuropean Physical Journal C: Particles and Fields, 2018; 78(6):487-1-487-31-
dc.identifier.issn1434-6044-
dc.identifier.issn1434-6052-
dc.identifier.urihttp://hdl.handle.net/2440/115046-
dc.description.abstractThe inclusive and fiducial tt¯ production cross-sections are measured in the lepton+jets channel using 20.2 fb⁻¹ of proton–proton collision data at a centre-of-mass energy of 8 TeV recorded with the ATLAS detector at the LHC. Major systematic uncertainties due to the modelling of the jet energy scale and b-tagging efficiency are constrained by separating selected events into three disjoint regions. In order to reduce systematic uncertainties in the most important background, the W+,jets process is modelled using Z+ jets events in a data-driven approach. The inclusive tt¯ cross-section is measured with a precision of 5.7% to be σinc(tt¯)=248.3±0.7(stat.)±13.4(syst.)±4.7(lumi.) pb, assuming a top-quark mass of 172.5 GeV. The result is in agreement with the Standard Model prediction. The cross-section is also measured in a phase space close to that of the selected data. The fiducial cross-section is σfid(tt¯)=48.8±0.1(stat.)±2.0(syst.)±0.9(lumi.) pb with a precision of 4.5%.-
dc.description.statementofresponsibilityM. Aaboud ... D. Duvnjak ... P. Jackson ... L. Lee ... A. Petridis ... M.J. White ... [et al.] (The ATLAS Collaboration)-
dc.language.isoen-
dc.publisherSpringer-
dc.rights© CERN for the benefit of the ATLAS collaboration 2018-
dc.source.urihttp://dx.doi.org/10.1140/epjc/s10052-018-5904-z-
dc.subjectATLAS Collaboration-
dc.titleMeasurement of the inclusive and fiducial tt¯ production cross-sections in the lepton+jets channel in pp collisions at √s=8TeV with the ATLAS detector-
dc.title.alternativeMeasurement of the inclusive and fiducial tt -bar production cross-sections in the lepton+jets channel in pp collisions at root s=8TeV with the ATLAS detector-
dc.typeJournal article-
dc.identifier.doi10.1140/epjc/s10052-018-5904-z-
dc.relation.grantARC-
pubs.publication-statusPublished-
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