Peer-reviewedCC BY 4.0JINST
Electron and photon energy calibration with the ATLAS detector using LHC Run 2 data
Abstract
This paper presents the electron and photon energy calibration obtained with the ATLAS detector using 140 fb−1 of LHC proton-proton collision data recorded at √s=13 TeV between 2015 and 2018. Methods for the measurement of electron and photon energies are outlined, along with the current knowledge of the passive material in front of the ATLAS electromagnetic calorimeter. The energy calibration steps are discussed in detail, with emphasis on the improvements introduced in this paper. The absolute energy scale is set using a large sample of Z-boson decays into electron-positron pairs, and its residual dependence on the electron energy is used for the first time to further constrain systematic uncertainties. The achieved calibration uncertainties are typically 0.05% for electrons from resonant Z-boson decays, 0.4% at ET∼ 10 GeV, and 0.3% at ET∼ 1 TeV; for photons at ET∼ 60 GeV, they are 0.2% on average. This is more than twice as precise as the previous calibration. The new energy calibration is validated using J/ψ → ee and radiative Z-boson decays.
Related
- Search for high-mass resonances in photon-jet final states using 140 fb−1 of pp collisions at √s = 13 TeV with the ATLAS detector
- Measurement of the Higgs boson decay to a low-mass dilepton system and a photon in pp collisions at √s = 13 and 13.6 TeV with the ATLAS detector
- Measurements of isolated photon pair production in association with jets in pp collisions at √s = 8 TeV with the ATLAS detector
- Demonstration of a cryogenic, switchable electron source for low-temperature detector calibration
- Impact of the position effects in the energy calibration of the BULLKID detector
BibTeX
@article{aad2026electron,
title = {{Electron and photon energy calibration with the ATLAS detector using LHC Run 2 data}},
author = {Georges Aad and Braden Keim Abbott and Kira Abeling and Nils Julius Abicht and Haider Abidi and Asmaa Aboulhorma and Halina Abramowicz and Henso Abreu and Yiming Abulaiti and Bobby Samir Acharya and Claire Adam Bourdarios and Leszek Adamczyk and Sagar Addepalli and Matt Addison and Jahred Adelman and Aytul Adiguzel and Tim Adye and Tony Affolder and Yoav Afik and Merve Nazlim Agaras and Jinky Agarwala and Anamika Aggarwal and Catalin Agheorghiesei and Ammara Ahmad and Faig Ahmadov and Waleed Syed Ahmed and Sudha Ahuja and Xiaocong Ai and Giulio Aielli and Arya Aikot and Malak Ait Tamlihat and Brahim Aitbenchikh and Iakov Aizenberg and Melike Akbiyik and Torsten Akesson and Andrei Akimov and Daiya Akiyama and Nilima Nilesh Akolkar and Konie Al Khoury and Gian Luigi Alberghi and Justin Albert and Pietro Albicocco and Guillaume Lucas Albouy and Sara Alderweireldt and Martin Aleksa and Igor Alexandrov and Calin Alexa and Theodoros Alexopoulos and Fabrizio Alfonsi and Malte Algren and Muhammad Alhroob and Babar Ali and Hanadi Ali and Shahzad Ali and Samuel William Alibocus and Malik Aliev and Gianluca Alimonti and Wael Alkakhi and Corentin Allaire and Benedict Allbrooke},
journal = {JINST},
year = {2026},
month = sep,
doi = {10.1088/1748-0221/19/02/p02009},
eprint = {2309.05471},
archivePrefix = {arXiv},
url = {https://hal.science/hal-04229209v1},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Electron and photon energy calibration with the ATLAS detector using LHC Run 2 data
AU - Georges Aad
AU - Braden Keim Abbott
AU - Kira Abeling
AU - Nils Julius Abicht
AU - Haider Abidi
AU - Asmaa Aboulhorma
AU - Halina Abramowicz
AU - Henso Abreu
AU - Yiming Abulaiti
AU - Bobby Samir Acharya
AU - Claire Adam Bourdarios
AU - Leszek Adamczyk
AU - Sagar Addepalli
AU - Matt Addison
AU - Jahred Adelman
AU - Aytul Adiguzel
AU - Tim Adye
AU - Tony Affolder
AU - Yoav Afik
AU - Merve Nazlim Agaras
AU - Jinky Agarwala
AU - Anamika Aggarwal
AU - Catalin Agheorghiesei
AU - Ammara Ahmad
AU - Faig Ahmadov
AU - Waleed Syed Ahmed
AU - Sudha Ahuja
AU - Xiaocong Ai
AU - Giulio Aielli
AU - Arya Aikot
AU - Malak Ait Tamlihat
AU - Brahim Aitbenchikh
AU - Iakov Aizenberg
AU - Melike Akbiyik
AU - Torsten Akesson
AU - Andrei Akimov
AU - Daiya Akiyama
AU - Nilima Nilesh Akolkar
AU - Konie Al Khoury
AU - Gian Luigi Alberghi
AU - Justin Albert
AU - Pietro Albicocco
AU - Guillaume Lucas Albouy
AU - Sara Alderweireldt
AU - Martin Aleksa
AU - Igor Alexandrov
AU - Calin Alexa
AU - Theodoros Alexopoulos
AU - Fabrizio Alfonsi
AU - Malte Algren
AU - Muhammad Alhroob
AU - Babar Ali
AU - Hanadi Ali
AU - Shahzad Ali
AU - Samuel William Alibocus
AU - Malik Aliev
AU - Gianluca Alimonti
AU - Wael Alkakhi
AU - Corentin Allaire
AU - Benedict Allbrooke
PY - 2026
DA - 2026/09/23
JO - JINST
DO - 10.1088/1748-0221/19/02/p02009
UR - https://hal.science/hal-04229209v1
AB - This paper presents the electron and photon energy calibration obtained with the ATLAS detector using 140 fb^−1 of LHC proton-proton collision data recorded at √s=13 TeV between 2015 and 2018. Methods for the measurement of electron and photon energies are outlined, along with the current knowledge of the passive material in front of the ATLAS electromagnetic calorimeter. The energy calibration steps are discussed in detail, with emphasis on the improvements introduced in this paper. The absolute energy scale is set using a large sample of Z-boson decays into electron-positron pairs, and its residual dependence on the electron energy is used for the first time to further constrain systematic uncertainties. The achieved calibration uncertainties are typically 0.05% for electrons from resonant Z-boson decays, 0.4% at E_T∼ 10 GeV, and 0.3% at E_T∼ 1 TeV; for photons at E_T∼ 60 GeV, they are 0.2% on average. This is more than twice as precise as the previous calibration. The new energy calibration is validated using J/ψ → ee and radiative Z-boson decays.
ER -