2018/07/31 by ATLAS Collaboration, Morad Aaboud, G. Aad +98
Physics and Astronomy · #ATLAS experiment #Atlas (anatomy) #Calibration #High-Energy Particle Collisions Research #Jet (fluid) #Large Hadron Collider #Nuclear physics #Particle Detector Development and Performance #Particle physics #Particle physics theoretical and experimental studies #Physics #RADIUS #Range (aeronautics) #Transverse plane #hep-ex
paper · pdf · doi:10.1140/epjc/s10052-019-6632-8
published as Eur. Phys. J. C 79 (2019) 135 · 70 pages in total, author list starting page 54, 32 figures, 5 tables, final version published in EPJC. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/JETM-2018-02/
openalex created_date 2019/01/11 · openalex publication_date 2019/02/01 · arxiv created 2019/03/27 · arxiv updated 2019/03/28 · openalex updated_date 2026/08/06
The response of the ATLAS detector to largeradius jets is measured in situ using 36.2 fb -1 of s = 13 TeV proton-proton collisions provided by the LHC and recorded by the ATLAS experiment during 2015 and 2016. The jet energy scale is measured in events where the jet recoils against a reference object, which can be either a calibrated photon, a reconstructed Z boson, or a system of well-measured small-radius jets. The jet energy resolution and a calibration of forward jets are derived using dijet balance measurements. The jet mass response is measured with two methods: using mass peaks formed by W bosons and top quarks with large transverse momenta and by comparing the jet mass measured using the energy deposited in the calorimeter with that using the momenta of charged-particle tracks. The transverse momentum and mass responses in simulations are found to be about 2-3% higher than in data. This difference is adjusted for with a correction factor. The results of the different methods are combined to yield a calibration over a large range of transverse momenta ( p T ). The precision of the relative jet energy scale is 1-2% for 200 GeV < p T < 2 TeV, while that of the mass scale is 2-10%. The ratio of the energy resolutions in data and simulation is measured to a precision of 10-15% over the same p T range.