Abstract The jet energy calibration and its uncertainties are derived from measurements of the calorimeter response to single particles in both data and Monte Carlo simulation using proton–proton collisions at s = 13 s = 13 TeV collected with the ATLAS detector during Run 2 at the Large Hadron Collider. The jet calibration uncertainty for anti- kT k T jets with a jet radius parameter of R ⱼet = 0. 4 jet = 0. 4 and in the central jet rapidity region is about 2. 5% for transverse momenta (p ₓ p T) of 20 GeV GeV, about 0. 5\% 0. 5 % for p ₓ =300 p T = 300 GeV GeV and 0. 7\% 0. 7 % for p ₓ =4 p T = 4 TeV TeV. Excellent agreement is found with earlier determinations obtained from pT p T -balance based in situ methods (Z/ Z / γ +jets). The combination of these two independent methods results in the most precise jet energy measurement achieved so far with the ATLAS detector with a relative uncertainty of 0. 3\% 0. 3 % at pT=300 p T = 300 GeV and 0. 6\% 0. 6 % at 4 TeV. The jet energy calibration is also derived with the single-particle calorimeter response measurements separately for quark- and gluon-induced jets and furthermore for jets with R ⱼet jet varying from 0. 2 to 1. 0 retaining the correlations between these measurements. Differences between inclusive jets and jets from boosted top-quark decays, with and without grooming the soft jet constituents, are also studied.
Aad et al. (Mon,) studied this question.