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| Título: | Electron and photon reconstruction and identification with the CMS experiment at the CERN LHC |
Autor: | Brochero Cifuentes, J. A. CSIC ORCID; Cabrillo, I. J. CSIC ORCID ; Calderon, Alicia ; Chazin Quero, B. CSIC; Duarte Campderros, J. CSIC ORCID ; Fernández-García, Marcos CSIC ORCID ; Fernández Manteca, P. J. CSIC ORCID; García Alonso, A. CSIC ORCID; Gómez, Gervasio CSIC ORCID ; Martínez-Rivero, Celso CSIC ORCID ; Martínez Ruiz del Arbol, P. CSIC ORCID; Matorras, Francisco CSIC ORCID ; Piedra, Jonatan CSIC ORCID ; Prieels, C. CSIC; Ricci-Tam, F. CSIC ORCID; Rodrigo, Teresa CSIC ORCID ; Ruiz Jimeno, Alberto CSIC ORCID ; Scodellaro, Luca CSIC ORCID ; Vila, Iván CSIC ORCID; Vizán, J. CSIC ORCID; CMS Collaboration | Fecha de publicación: | 2021 | Editor: | IOP Publishing | Citación: | Journal of Instrumentation 16: P05014 (2021) | Resumen: | The 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. | Descripción: | CERN for the benefit of the CMS collaboration: et al. | Versión del editor: | https://doi.org/10.1088/1748-0221/16/05/P05014 | URI: | http://hdl.handle.net/10261/260145 | DOI: | 10.1088/1748-0221/16/05/P05014 | E-ISSN: | 1748-0221 |
| Aparece en las colecciones: | (IFCA) Artículos |
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| electroLHC.pdf | 6,8 MB | Adobe PDF |  Visualizar/Abrir |
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