Jet energy scale measurements and their systematic uncertainties are reported for jets measured with the ATLAS detector using proton-proton collision data with a center-of-mass energy of $\sqrt{s}=13\mathrm{TeV}$, corresponding to an integrated luminosity of $3.2{\mathrm{fb}}^{-1}$ collected during 2015 at the LHC. Jets are reconstructed from energy deposits forming topological clusters of calorimeter cells, using the anti-$k_t$ algorithm with radius parameter $R=0.4$. Jets are calibrated with a series of simulation-based corrections and in situ techniques. In situ techniques exploit the transverse momentum balance between a jet and a reference object such as a photon, $Z$ boson, or multijet system for jets with $20<p_{\mathrm{T}}<2000\mathrm{GeV}$ and pseudorapidities of $|\eta |<4.5$, using both data and simulation. An uncertainty in the jet energy scale of less than 1% is found in the central calorimeter region ($|\eta |<1.2$) for jets with $100<p_{\mathrm{T}}<500\mathrm{GeV}$. An uncertainty of about 4.5% is found for low-$p_{\mathrm{T}}$ jets with $p_{\mathrm{T}}=20\mathrm{GeV}$ in the central region, dominated by uncertainties in the corrections for multiple proton-proton interactions. The calibration of forward jets ($|\eta |>0.8$) is derived from dijet $p_{\mathrm{T}}$ balance measurements. For jets of $p_{\mathrm{T}}=80\mathrm{GeV}$, the additional uncertainty for the forward jet calibration reaches its largest value of about 2% in the range $|\eta |>3.5$ and in a narrow slice of $2.2<|\eta |<2.4$.

• Received 29 March 2017

DOI:https://doi.org/10.1103/PhysRevD.96.072002

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© 2017 CERN, for the ATLAS Collaboration