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Electron and photon energy calibration with the ATLAS detector using 2015-2016 LHC proton-proton collision data

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arxiv 1812.03848 v2 pith:E2AWE6AM submitted 2018-12-10 hep-ex

ATLAS Collaboration This is my paper · ORCID
classification hep-ex
keywords calibrationenergydatadecaysdetectorelectronmomentumphoton
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

This paper presents the electron and photon energy calibration obtained with the ATLAS detector using about 36 fb$^{-1}$ of LHC proton-proton collision data recorded at $\sqrt{s}=13$ TeV in 2015 and 2016. The different calibration steps applied to the data and the optimization of the reconstruction of electron and photon energies are discussed. The absolute energy scale is set using a large sample of $Z$ boson decays into electron--positron pairs. The systematic uncertainty in the energy scale calibration varies between 0.03% to 0.2% in most of the detector acceptance for electrons with transverse momentum close to 45 GeV. For electrons with transverse momentum of 10 GeV the typical uncertainty is 0.3% to 0.8% and it varies between 0.25% and 1% for photons with transverse momentum around 60 GeV. Validations of the energy calibration with $J/\psi \rightarrow e^+e^-$ decays and radiative $Z$ boson decays are also presented.

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Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Measurement of isolated photon plus two-jet correlations in Pb+Pb and $pp$ collisions at 5.02 TeV with ATLAS

    nucl-ex 2026-06 unverdicted novelty 5.0 of 10

    ATLAS reports significant suppression (I_AA < 1) of photon-tagged two-jet yields in Pb+Pb versus pp collisions at 5.02 TeV across three observables, compared to JEWEL, JETSCAPE, and LBT models.

  2. Measurements of top-quark pair differential and double-differential cross-sections in the $\ell$+jets channel with $pp$ collisions at $\sqrt{s}=13$ TeV using the ATLAS detector

    hep-ex 2019-08 accept novelty 5.0 of 10

    ATLAS presents single- and double-differential top-quark pair cross-sections in the l+jets channel at 13 TeV, finding good overall agreement with predictions but tensions in boosted high-pT tails.

  3. The calibration of large-radius jets using the Run 2 dataset with the ATLAS detector

    hep-ex 2026-07 conditional novelty 4.0 of 10

    Large-radius jets from Unified Flow Objects, groomed with soft drop, are calibrated against Monte Carlo and collision data, with in-situ-validated jet energy and mass scales at 1% (≤1 TeV) to 2–3% (≤2 TeV) precision.

  4. Performance of electron and photon triggers in ATLAS during LHC Run 2

    hep-ex 2019-09 accept novelty 4.0 of 10

    For 2015-2018 LHC data, ATLAS electron and photon triggers select more than 75-96% of candidate electrons and photons above threshold, with the full efficiency curves and systematic uncertainties reported.

  5. Search for high-mass dilepton resonances in $pp$ collisions at $\sqrt{s}=13.6$ TeV combined with 13 TeV results using the ATLAS detector

    hep-ex 2026-07 accept novelty 3.0 of 10

    Combined ATLAS Run 2+3 dilepton data yield no significant high-mass resonance and set 95% CL mass limits of 5.5, 5.1 and 4.8 TeV on Z′_SSM, Z′_χ and Z′_ψ.

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