Performance of photon reconstruction and identification with the CMS detector in proton-proton collisions at s = 8 TeV
© CERN 2015 for the benefit of the CMS collaboration. A description is provided of the performance of the CMS detector for photon reconstruction and identification in proton-proton collisions at a centre-of-mass energy of 8 TeV at the CERN LHC. Details are given on the reconstruction of photons from...
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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/1721.1/133858 |
| _version_ | 1811083954834374656 |
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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. A description is provided of the performance of the CMS detector for photon reconstruction and identification in proton-proton collisions at a centre-of-mass energy of 8 TeV at the CERN LHC. Details are given on the reconstruction of photons from energy deposits in the electromagnetic calorimeter (ECAL) and the extraction of photon energy estimates. The reconstruction of electron tracks from photons that convert to electrons in the CMS tracker is also described, as is the optimization of the photon energy reconstruction and its accurate modelling in simulation, in the analysis of the Higgs boson decay into two photons. In the barrel section of the ECAL, an energy resolution of about 1% is achieved for unconverted or late-converting photons from Hγγ decays. Different photon identification methods are discussed and their corresponding selection efficiencies in data are compared with those found in simulated events. |
| first_indexed | 2024-09-23T12:42:16Z |
| format | Article |
| id | mit-1721.1/133858 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T12:42:16Z |
| publishDate | 2021 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/1338582023-01-06T17:25:58Z Performance of photon reconstruction and identification 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. A description is provided of the performance of the CMS detector for photon reconstruction and identification in proton-proton collisions at a centre-of-mass energy of 8 TeV at the CERN LHC. Details are given on the reconstruction of photons from energy deposits in the electromagnetic calorimeter (ECAL) and the extraction of photon energy estimates. The reconstruction of electron tracks from photons that convert to electrons in the CMS tracker is also described, as is the optimization of the photon energy reconstruction and its accurate modelling in simulation, in the analysis of the Higgs boson decay into two photons. In the barrel section of the ECAL, an energy resolution of about 1% is achieved for unconverted or late-converting photons from Hγγ decays. Different photon identification methods are discussed and their corresponding selection efficiencies in data are compared with those found in simulated events. 2021-10-27T19:57:02Z 2021-10-27T19:57:02Z 2015-08-01 2019-05-21T13:10:06Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/133858 Khachatryan, V., et al. "Performance of Photon Reconstruction and Identification with the Cms Detector in Proton-Proton Collisions at S = 8 Tev." Journal of Instrumentation 10 8 (2015). en 10.1088/1748-0221/10/08/P08010 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 photon reconstruction and identification with the CMS detector in proton-proton collisions at s = 8 TeV |
| title | Performance of photon reconstruction and identification with the CMS detector in proton-proton collisions at s = 8 TeV |
| title_full | Performance of photon reconstruction and identification with the CMS detector in proton-proton collisions at s = 8 TeV |
| title_fullStr | Performance of photon reconstruction and identification with the CMS detector in proton-proton collisions at s = 8 TeV |
| title_full_unstemmed | Performance of photon reconstruction and identification with the CMS detector in proton-proton collisions at s = 8 TeV |
| title_short | Performance of photon reconstruction and identification with the CMS detector in proton-proton collisions at s = 8 TeV |
| title_sort | performance of photon reconstruction and identification with the cms detector in proton proton collisions at s 8 tev |
| url | https://hdl.handle.net/1721.1/133858 |
| work_keys_str_mv | AT thecmscollaboration performanceofphotonreconstructionandidentificationwiththecmsdetectorinprotonprotoncollisionsats8tev |