Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data
This paper presents the electron and photon energy calibration achieved with the ATLAS detector using about 25 fb [superscript −1] of LHC proton–proton collision data taken at centre-of-mass energies of √s = 7 and 8 TeV. The reconstruction of electron and photon energies is optimised using multivari...
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| Format: | Article |
| Language: | en_US |
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Springer-Verlag
2015
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| Online Access: | http://hdl.handle.net/1721.1/94574 https://orcid.org/0000-0002-7586-7253 |
| _version_ | 1811085428627865600 |
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| author | Taylor, Frank E. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Taylor, Frank E. |
| author_sort | Taylor, Frank E. |
| collection | MIT |
| description | This paper presents the electron and photon energy calibration achieved with the ATLAS detector using about 25 fb [superscript −1] of LHC proton–proton collision data taken at centre-of-mass energies of √s = 7 and 8 TeV. The reconstruction of electron and photon energies is optimised using multivariate algorithms. The response of the calorimeter layers is equalised in data and simulation, and the longitudinal profile of the electromagnetic showers is exploited to estimate the passive material in front of the calorimeter and reoptimise the detector simulation. After all corrections, the Z resonance is used to set the absolute energy scale. For electrons from Z decays, the achieved calibration is typically accurate to 0.05 % in most of the detector acceptance, rising to 0.2 % in regions with large amounts of passive material. The remaining inaccuracy is less than 0.2–1 % for electrons with a transverse energy of 10 GeV, and is on average 0.3 % for photons. The detector resolution is determined with a relative inaccuracy of less than 10 % for electrons and photons up to 60 GeV transverse energy, rising to 40 % for transverse energies above 500 GeV. |
| first_indexed | 2024-09-23T13:09:26Z |
| format | Article |
| id | mit-1721.1/94574 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:09:26Z |
| publishDate | 2015 |
| publisher | Springer-Verlag |
| record_format | dspace |
| spelling | mit-1721.1/945742022-09-28T12:17:31Z Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data Taylor, Frank E. Massachusetts Institute of Technology. Department of Physics Taylor, Frank E. This paper presents the electron and photon energy calibration achieved with the ATLAS detector using about 25 fb [superscript −1] of LHC proton–proton collision data taken at centre-of-mass energies of √s = 7 and 8 TeV. The reconstruction of electron and photon energies is optimised using multivariate algorithms. The response of the calorimeter layers is equalised in data and simulation, and the longitudinal profile of the electromagnetic showers is exploited to estimate the passive material in front of the calorimeter and reoptimise the detector simulation. After all corrections, the Z resonance is used to set the absolute energy scale. For electrons from Z decays, the achieved calibration is typically accurate to 0.05 % in most of the detector acceptance, rising to 0.2 % in regions with large amounts of passive material. The remaining inaccuracy is less than 0.2–1 % for electrons with a transverse energy of 10 GeV, and is on average 0.3 % for photons. The detector resolution is determined with a relative inaccuracy of less than 10 % for electrons and photons up to 60 GeV transverse energy, rising to 40 % for transverse energies above 500 GeV. United States. Dept. of Energy National Science Foundation (U.S.) Brookhaven National Laboratory 2015-02-17T19:48:48Z 2015-02-17T19:48:48Z 2014-10 2014-07 Article http://purl.org/eprint/type/JournalArticle 1434-6044 1434-6052 http://hdl.handle.net/1721.1/94574 Aad, G., B. Abbott, J. Abdallah, S. Abdel Khalek, O. Abdinov, R. Aben, B. Abi, et al. “Electron and Photon Energy Calibration with the ATLAS Detector Using LHC Run 1 Data.” Eur. Phys. J. C 74, no. 10 (October 2014). https://orcid.org/0000-0002-7586-7253 en_US http://dx.doi.org/10.1140/epjc/s10052-014-3071-4 European Physical Journal C: Particles and Fields Creative Commons Attribution http://creativecommons.org/licenses/by/4.0/ application/pdf Springer-Verlag Springer-Verlag |
| spellingShingle | Taylor, Frank E. Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data |
| title | Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data |
| title_full | Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data |
| title_fullStr | Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data |
| title_full_unstemmed | Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data |
| title_short | Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data |
| title_sort | electron and photon energy calibration with the atlas detector using lhc run 1 data |
| url | http://hdl.handle.net/1721.1/94574 https://orcid.org/0000-0002-7586-7253 |
| work_keys_str_mv | AT taylorfranke electronandphotonenergycalibrationwiththeatlasdetectorusinglhcrun1data |