Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at √s = 8 TeV
© CERN 2015 for the benefit of the CMS collaboration.. The performance and strategies used in electron reconstruction and selection at CMS are presented based on data corresponding to an integrated luminosity of 19.7 fb-1, collected in proton-proton collisions at √s = 8 TeV at the CERN LHC. The pape...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2021
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| Online Access: | https://hdl.handle.net/1721.1/133860 |
| _version_ | 1826194405256593408 |
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| author | The CMS Collaboration |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics The CMS Collaboration |
| author_sort | The CMS Collaboration |
| collection | MIT |
| description | © CERN 2015 for the benefit of the CMS collaboration.. The performance and strategies used in electron reconstruction and selection at CMS are presented based on data corresponding to an integrated luminosity of 19.7 fb-1, collected in proton-proton collisions at √s = 8 TeV at the CERN LHC. The paper focuses on prompt isolated electrons with transverse momenta ranging from about 5 to a few 100 GeV. A detailed description is given of the algorithms used to cluster energy in the electromagnetic calorimeter and to reconstruct electron trajectories in the tracker. The electron momentum is estimated by combining the energy measurement in the calorimeter with the momentum measurement in the tracker. Benchmark selection criteria are presented, and their performances assessed using Z, , and J/ψ decays into e+ + e- pairs. The spectra of the observables relevant to electron reconstruction and selection as well as their global efficiencies are well reproduced by Monte Carlo simulations. The momentum scale is calibrated with an uncertainty smaller than 0.3%. The momentum resolution for electrons produced in Z boson decays ranges from 1.7 to 4.5%, depending on electron pseudorapidity and energy loss through bremsstrahlung in the detector material. |
| first_indexed | 2024-09-23T09:55:36Z |
| format | Article |
| id | mit-1721.1/133860 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T09:55:36Z |
| publishDate | 2021 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/1338602023-01-06T16:15:39Z Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at √s = 8 TeV The CMS Collaboration Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science © CERN 2015 for the benefit of the CMS collaboration.. The performance and strategies used in electron reconstruction and selection at CMS are presented based on data corresponding to an integrated luminosity of 19.7 fb-1, collected in proton-proton collisions at √s = 8 TeV at the CERN LHC. The paper focuses on prompt isolated electrons with transverse momenta ranging from about 5 to a few 100 GeV. A detailed description is given of the algorithms used to cluster energy in the electromagnetic calorimeter and to reconstruct electron trajectories in the tracker. The electron momentum is estimated by combining the energy measurement in the calorimeter with the momentum measurement in the tracker. Benchmark selection criteria are presented, and their performances assessed using Z, , and J/ψ decays into e+ + e- pairs. The spectra of the observables relevant to electron reconstruction and selection as well as their global efficiencies are well reproduced by Monte Carlo simulations. The momentum scale is calibrated with an uncertainty smaller than 0.3%. The momentum resolution for electrons produced in Z boson decays ranges from 1.7 to 4.5%, depending on electron pseudorapidity and energy loss through bremsstrahlung in the detector material. 2021-10-27T19:57:02Z 2021-10-27T19:57:02Z 2015-06-01 2019-05-21T12:57:14Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/133860 en 10.1088/1748-0221/10/06/P06005 Journal of Instrumentation Creative Commons Attribution 3.0 unported license https://creativecommons.org/licenses/by/3.0/ application/pdf IOP Publishing IOP Publishing |
| spellingShingle | The CMS Collaboration Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at √s = 8 TeV |
| title | Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at √s = 8 TeV |
| title_full | Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at √s = 8 TeV |
| title_fullStr | Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at √s = 8 TeV |
| title_full_unstemmed | Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at √s = 8 TeV |
| title_short | Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at √s = 8 TeV |
| title_sort | performance of electron reconstruction and selection with the cms detector in proton proton collisions at √s 8 tev |
| url | https://hdl.handle.net/1721.1/133860 |
| work_keys_str_mv | AT thecmscollaboration performanceofelectronreconstructionandselectionwiththecmsdetectorinprotonprotoncollisionsats8tev |