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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.accessioned2021-12-17T04:30:24Zpt_BR
dc.date.issued2021pt_BR
dc.identifier.issn1748-0221pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/233049pt_BR
dc.description.abstractThe performance is presented of the reconstruction and identification algorithms for electrons and photons with the CMS experiment at the LHC. The reported results are based on proton-proton collision data collected at a center-of-mass energy of 13 TeV and recorded in 2016–2018, corresponding to an integrated luminosity of 136 fb^-1. Results obtained from lead-lead collision data collected at √(sNN)=5.02 TeV are also presented. Innovative techniques are used to reconstruct the electron and photon signals in the detector and to optimize the energy resolution. Events with electrons and photons in the final state are used to measure the energy resolution and energy scale uncertainty in the recorded events. The measured energy resolution for electrons produced in Z boson decays in proton-proton collision data ranges from 2 to 5%, depending on electron pseudorapidity and energy loss through bremsstrahlung in the detector material. The energy scale in the same range of energies is measured with an uncertainty smaller than 0.1 (0.3)% in the barrel (endcap) region in proton-proton collisions and better than 1 (3)% in the barrel (endcap) region in heavy ion collisions. The timing resolution for electrons from Z boson decays with the full 2016–2018 proton-proton collision data set is measured to be 200 ps.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofJournal of Instrumentation. Bristol. Vol. 16, no. 5 (May 2021), P05014, 79 p.pt_BR
dc.rightsOpen Accessen
dc.subjectLarge detector systems for particle and astroparticle physicsen
dc.subjectColisões proton-protonpt_BR
dc.subjectAceleradores de partículaspt_BR
dc.subjectParticle identification methodsen
dc.subjectBosons Zpt_BR
dc.titleElectron and photon reconstruction and identification with the CMS experiment at the CERN LHCpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001130316pt_BR
dc.type.originEstrangeiropt_BR


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