Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/106910
Title: In situ calibration of large-radius jet energy and mass in 13 TeV proton–proton collisions with the ATLAS detector
Authors: Santos, S. P. Amor dos 
Fiolhais, M. C. N. 
Galhardo, B. 
Veloso, F. 
Wolters, H. 
ATLAS Collaboration
Issue Date: 2019
Publisher: Springer Nature
metadata.degois.publication.title: European Physical Journal C
metadata.degois.publication.volume: 79
metadata.degois.publication.issue: 2
Abstract: The response of the ATLAS detector to large-radius 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 (pT). The precision of the relative jet energy scale is 1–2% for 200GeV<pT<2TeV, 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 pT range.
URI: https://hdl.handle.net/10316/106910
DOI: 10.1140/epjc/s10052-019-6632-8
Rights: openAccess
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais

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