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dc.contributor.authorCMS Collaborationen_US
dc.contributor.authorSirunyan, A. M.en_US
dc.contributor.authorCHAUHAN, S.en_US
dc.contributor.authorDUBE, SOURABHen_US
dc.contributor.authorHEGDE, V.en_US
dc.contributor.authorKAPOOR, A.en_US
dc.contributor.authorKOTHEKAR, K.en_US
dc.contributor.authorPANDEY, S.en_US
dc.contributor.authorRANE, A.en_US
dc.contributor.authorSHARMA, SEEMA et al.en_US
dc.date.accessioned2019-07-01T06:44:58Z
dc.date.available2019-07-01T06:44:58Z
dc.date.issued2017-09en_US
dc.identifier.citationJournal of High Energy Physics, 2017, 51.en_US
dc.identifier.issn1126-6708en_US
dc.identifier.issn1029-8479en_US
dc.identifier.urihttp://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/3573-
dc.identifier.urihttps://doi.org/10.1016/j.physletb.2016.08.019en_US
dc.description.abstractThis paper describes a measurement of the inclusive top quark pair production cross-section (σt¯t) with a data sample of 3.2fb−1 of proton–proton collisions at a centre-of-mass energy of √s=13TeV, collected in 2015 by the ATLAS detector at the LHC. This measurement uses events with an opposite-charge electron–muon pair in the final state. Jets containing b-quarks are tagged using an algorithm based on track impact parameters and reconstructed secondary vertices. The numbers of events with exactly one and exactly two b-tagged jets are counted and used to determine simultaneously σt¯t and the efficiency to reconstruct and b-tag a jet from a top quark decay, thereby minimising the associated systematic uncertainties. The cross-section is measured to be:σt¯t=818±8(stat)±27(syst)±19(lumi)±12(beam)pb,where the four uncertainties arise from data statistics, experimental and theoretical systematic effects, the integrated luminosity and the LHC beam energy, giving a total relative uncertainty of 4.4%. The result is consistent with theoretical QCD calculations at next-to-next-to-leading order. A fiducial measurement corresponding to the experimental acceptance of the leptons is also presented.en_US
dc.language.isoenen_US
dc.publisherSpringer Natureen_US
dc.subjectHadron-Hadron scatteringen_US
dc.subjectTop physics b-tagged jetsen_US
dc.subjectATLAS detectoren_US
dc.subjectTop quarken_US
dc.subjectGluon parton distribution functionen_US
dc.subjectSimulation samplesen_US
dc.subject2017en_US
dc.titleMeasurement of the t¯t production cross-section using eμ events with b-tagged jets in pp collisions at √s=13TeV with the ATLAS detectoren_US
dc.typeArticleen_US
dc.contributor.departmentDept. of Physicsen_US
dc.identifier.sourcetitleJournal of High Energy Physicsen_US
dc.publication.originofpublisherForeignen_US
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