Jet energy measurement and its systematic uncertainty in proton-proton collisions at √s=7 TeV with the ATLAS detector

By F. Taylor. 2015

439 citations recorded by the source corpus.

The jet energy scale (JES) and its systematic uncertainty are determined for jets measured with the ATLAS detector using proton-proton collision data with a centre-of-mass energy of √s=7 TeV corresponding to an integrated luminosity of 4.7 fb⁻¹. Jets are reconstructed from energy deposits forming topological clusters of calorimeter cells using the anti-k t algorithm with distance parameters R=0.4 or R=0.6 , and are calibrated using MC simulations. A residual JES correction is applied to account for differences between data and MC simulations. This correction and its systematic uncertainty are estimated using a combination of in situ techniques exploiting the transverse momentum balance between a jet and a reference object such as a photon or a Z boson, for 20 1 TeV. The calibration of forward jets is derived from dijet p T balance measurements. The resulting uncertainty reaches its largest value of 6 for low-p T jets at |η|=4.5 . Additional JES uncertainties due to specific event topologies, such as close-by jets or selections of event samples with an enhanced content of jets originating from light quarks or gluons, are also discussed. The magnitude of these uncertainties depends on the event sample used in a given physics analysis, but typically amounts to 0.5 to 3 .

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/6fcdd2ee4d28f385fa6f10312966979bd8cd8a4c

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Citations in the corpus

Jet energy scale measurements and their systematic uncertainties in proton-proton collisions at √s=13 TeV with the ATLAS detector (2017, methodology): “The estimation of systematic uncertainties due to pile-up and the choice of event topology are similar to those of the 2011 calibration [3], but now use the bootstrapping procedure to ensure statistical significance.”
Jet substructure at the Large Hadron Collider (2018, methodology): “The ratio of the measured energy Ereco to the deposited energy Etrue is the jet energy response which depends on the energy, pseudorapidity and other features of the jet.”
Performance of the ATLAS trigger system in 2015 (2016, methodology): “The jets are calibrated in a procedure similar to that adopted for offline physics analyses [44].”
Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector (2017, neutral): “The sources that contribute to the uncertainty in the jet energy scale [104, 105] are decomposed into uncorrelated components and treated as independent sources in the analysis.”
Searches for heavy long-lived charged particles with the ATLAS detector in proton-proton collisions at s=8\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\odds (2014, background): “The dominant contributions are the muon momentum scale (at low masses) and the jet energy scale [76] (at high masses).”
Search for massive, long-lived particles using multitrack displaced vertices or displaced lepton pairs in pp collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector (2015, neutral): “DV þ jet candidate events are discarded if they contain any candidate jet failing to satisfy quality criteria designed to suppress detector noise and noncollision backgrounds [56,57].”
Jet reconstruction and performance using particle flow with the ATLAS Detector (2017, methodology): “Figure 21 shows C × JES as a function of p T .”
Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector (2015, neutral): “response and modelling of in situ jet calibration [35, 36].”
Topological cell clustering in the ATLAS calorimeters and its performance in LHC Run 1 (2016, positive): “As the jets are globally corrected for pile-up [16], they form a stable kinematic reference for the evaluation of pile-up effects on the topo-clusters used to reconstruct them.”
Les Houches 2017: Physics at TeV Colliders Standard Model Working Group Report (2017, background): “A rather complete evaluation is described in [712].”
Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV (2016, methodology): “The minimum JES uncertainty of 0.32% for jets with 165 pT 330 GeV and |η| 0.8, when excluding sample-dependent uncertainties due to jet-flavor response and time-dependent detector response variations, surpasses the precision of previous JES measurements at the Tevatron [15, 16] and the LHC [13”
Measurements of Higgs boson properties in the diphoton decay channel with 36 fb$^{-1}$ of $pp$ collision data at $\sqrt{s} = 13$ TeV with the ATLAS detector (2018, positive): “Jets are corrected on an event-by-event basis for energy deposits originating from pileup [80], then calibrated using a combination of simulation-based and data-driven correction factors, which correct for different responses to electromagnetic and hadronic showers of the calorimeter and inactive re”