Aad, G;
Abbott, B;
Abbott, DC;
Abud, AA;
Abeling, K;
Abhayasinghe, DK;
Abidi, SH;
... ATLAS Collaboration, .; + view all
(2021)
Jet energy scale and resolution measured in proton–proton collisions at √s=13 TeV with the ATLAS detector.
European Physical Journal C
, 81
, Article 689. 10.1140/epjc/s10052-021-09402-3.
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Abstract
Jet energy scale and resolution measurements with their associated uncertainties are reported for jets using 36–81 fb^{-1} of proton–proton collision data with a centre-of-mass energy of \sqrt{s}=13 {\text {Te}}{\text {V}} 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_t 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 (|\eta |<1.2) vary from 1% for a wide range of high-p_{{\text {T}}} jets (250<p_{{\text {T}}} <2000~{\text {Ge}}{\text {V}}), to 5% at very low p_{{\text {T}}} (20~{\text {Ge}}{\text {V}}) and 3.5% at very high p_{{\text {T}}} (>2.5~{\text {Te}}{\text {V}}). The relative jet energy resolution is measured and ranges from (24 \pm 1.5)% at 20 {\text {Ge}}{\text {V}} to (6 \pm 0.5)% at 300 {\text {Ge}}{\text {V}}.
| Type: | Article |
|---|---|
| Title: | Jet energy scale and resolution measured in proton–proton collisions at √s=13 TeV with the ATLAS detector |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1140/epjc/s10052-021-09402-3 |
| Publisher version: | https://doi.org/10.1140/epjc/s10052-021-09402-3 |
| Language: | English |
| Additional information: | © 2021 Springer Nature Switzerland AG. This article is licensed under a Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/). |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10133197 |
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