New techniques for jet calibration with the ATLAS detector · arXivDesk
2303.17312Mar 30, 202358 pages in total, author list starting page 41, 21 figures, 3 tables, published in Eur. Phys. J. C (2023) 83:761. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/JETM-2022-01/
New techniques for jet calibration with the ATLAS detector
A determination of the jet energy scale is presented using proton−proton collision data with a centre-of-mass energy of s=13 TeV, corresponding to an integrated luminosity of 140 fb ⁻¹ collected using the ATLAS detector at the LHC. Jets are reconstructed using the ATLAS particle-flow method that combines charged-particle tracks and topo-clusters formed from energy deposits in the calorimeter cells. The anti-kt
Nearby in the stack
jet algorithm with radius parameter
R=0.4
is used to define the jet. Novel jet energy scale calibration strategies developed for the LHC Run 2 are reported that lay the foundation for the jet calibration in Run 3. Jets are calibrated with a series of simulation-based corrections, including state-of-the-art techniques in jet calibration such as machine learning methods and novel in situ calibrations to achieve better performance than the baseline calibration derived using up to 81
fb ⁻¹
of Run 2 data. The performance of these new techniques is then examined in the in situ measurements by exploiting the transverse momentum balance between a jet and a reference object. The
b
-quark jet energy scale using particle flow jets is measured for the first time with around 1% precision using