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dc.contributor.authorSirunyan, A. M.pt_BR
dc.contributor.authorSilveira, Gustavo Gil dapt_BR
dc.contributor.authorCMS Collaborationpt_BR
dc.date.accessioned2018-11-28T02:45:34Zpt_BR
dc.date.issued2018pt_BR
dc.identifier.issn1434-6044pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/185159pt_BR
dc.description.abstractA measurement is presented of the Z/γ ∗ → ττ cross section in pp collisions at √ s = 13 TeV, using data recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of 2.3 fb−1. The product of the inclusive cross section and branching fraction is measured to be σ(pp → Z/γ ∗+X) B(Z/γ ∗ → ττ) = 1848 ± 12 (stat) ± 67 (syst +lumi) pb, in agreement with the standard model expectation, computed at next-to-next-to-leading order accuracy in perturbative quantum chromodynamics. The measurement is used to validate new analysis techniques relevant for futuremeasurements of τ lepton production. The measurement also provides the reconstruction efficiency and energy scale for τ decays to hadrons+ντ final states, determined with respective relative uncertainties of 2.2 and 0.9%.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofThe European physical journal. C, Particles and fields. Berlin. Vol. 78, no. 9 (Sept. 2018), 708, 42 p.pt_BR
dc.rightsOpen Accessen
dc.subjectAceleradores de partículaspt_BR
dc.subjectColisões proton-protonpt_BR
dc.subjectMétodo de Monte Carlopt_BR
dc.subjectLeptonspt_BR
dc.titleMeasurement of the Z/γ∗ → ττ cross section in pp collisions at √s = 13TeV and validation of τ lepton analysis techniquespt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001080798pt_BR
dc.type.originEstrangeiropt_BR


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