Determination of jet calibration and energy resolution in proton–proton collisions at √s=8TeV using the ATLAS detector
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ATLUS CollaborationAffiliation
Department of Physics, University of ArizonaIssue Date
2020
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Aaboud, M., Aad, G., Abbott, B. et al. Determination of jet calibration and energy resolution in proton–proton collisions at s√=8 TeV using the ATLAS detector. Eur. Phys. J. C 80, 1104 (2020).Journal
European Physical Journal CRights
Copyright © CERN for the benefit of the ATLAS collaboration 2020. This article is licensed under a Creative Commons Attribution 4.0 International License.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.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. © 2020, The Author(s).Note
Open access journalISSN
1434-6044Version
Final published versionae974a485f413a2113503eed53cd6c53
10.1140/epjc/s10052-020-08477-8
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Except where otherwise noted, this item's license is described as Copyright © CERN for the benefit of the ATLAS collaboration 2020. This article is licensed under a Creative Commons Attribution 4.0 International License.