Aaboud, M;
Aad, G;
Abbott, B;
Abdinov, O;
Abeloos, B;
Abidi, SH;
AbouZeid, OS;
... Arratia, M; + view all
(2020)
Determination of jet calibration and energy resolution in proton–proton collisions at √s=8TeV using the ATLAS detector.
European Physical Journal C
, 80
(12)
, Article 1104. 10.1140/epjc/s10052-020-08477-8.
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Abstract
The jet energy scale, jet energy resolution, and their systematic uncertainties are measured for jets reconstructed with the ATLAS detector in 2012 using proton–proton data produced at a centre-of-mass energy of 8 TeV with an integrated luminosity of 20fb-1. Jets are reconstructed from clusters of energy depositions in the ATLAS calorimeters using the anti-kt algorithm. A jet calibration scheme is applied in multiple steps, each addressing specific effects including mitigation of contributions from additional proton–proton collisions, loss of energy in dead material, calorimeter non-compensation, angular biases and other global jet effects. The final calibration step uses several in situ techniques and corrects for residual effects not captured by the initial calibration. These analyses measure both the jet energy scale and resolution by exploiting the transverse momentum balance in γ + jet, Z + jet, dijet, and multijet events. A statistical combination of these measurements is performed. In the central detector region, the derived calibration has a precision better than 1% for jets with transverse momentum 150GeV<pT< 1500 GeV, and the relative energy resolution is (8.4 ± 0.6) % for pT=100GeV and (23 ± 2) % for pT=20GeV. The calibration scheme for jets with radius parameter R= 1.0 , for which jets receive a dedicated calibration of the jet mass, is also discussed.
| Type: | Article |
|---|---|
| Title: | Determination of jet calibration and energy resolution in proton–proton collisions at √s=8TeV using the ATLAS detector |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1140/epjc/s10052-020-08477-8 |
| Publisher version: | https://doi.org/10.1140/epjc/s10052-020-08477-8 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit 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/10117060 |
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