Jet energy scale and resolution measured in proton-proton collisions at √s=13 TeV with the ATLAS detector



Aad, G, Abbott, B, Abbott, DC, Abud, A Abed, Abeling, K, Abhayasinghe, DK, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2934 more authors) (2021) Jet energy scale and resolution measured in proton-proton collisions at √s=13 TeV with the ATLAS detector EUROPEAN PHYSICAL JOURNAL C, 81 (8). 689-. ISSN 1434-6044, 1434-6052

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Abstract

Jet energy scale and resolution measurements with their associated uncertainties are reported for jets using 36–81 fb<sup>- 1</sup> of proton–proton collision data with a centre-of-mass energy of s=13 TeV collected by the ATLAS detector at the LHC. Jets are reconstructed using two different input types: topo-clusters formed from energy deposits in calorimeter cells, as well as an algorithmic combination of charged-particle tracks with those topo-clusters, referred to as the ATLAS particle-flow reconstruction method. The anti-k<inf>t</inf> jet algorithm with radius parameter R= 0.4 is the primary jet definition used for both jet types. This result presents new jet energy scale and resolution measurements in the high pile-up conditions of late LHC Run 2 as well as a full calibration of particle-flow jets in ATLAS. Jets are initially calibrated using a sequence of simulation-based corrections. Next, several in situ techniques are employed to correct for differences between data and simulation and to measure the resolution of jets. The systematic uncertainties in the jet energy scale for central jets (| η| < 1.2) vary from 1% for a wide range of high-p<inf>T</inf> jets (250<pT<2000GeV), to 5% at very low p<inf>T</inf> (20GeV) and 3.5% at very high p<inf>T</inf> (>2.5TeV). The relative jet energy resolution is measured and ranges from (24 ± 1.5)% at 20 GeV to (6 ± 0.5)% at 300 GeV.

Item Type: Article
Additional Information: 73 pages in total, author list starting page 57, 31 figures, 2 tables, submitted to Eur. Phys. J. C. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/JETM-2018-05
Uncontrolled Keywords: hep-ex, hep-ex
Divisions: Faculty of Science & Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 26 Aug 2021 07:44
Last Modified: 22 May 2026 23:28
DOI: 10.1140/epjc/s10052-021-09402-3
Open Access URL: https://link.springer.com/article/10.1140%2Fepjc%2...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3134801
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