In situ calibrations for R-scan jets

MARIA FLORENCIA DANERI; ATLAS COLLABORATION

Otro; ATLAS Conference Note; 2018

The jet energy scale measurements and their systematic uncertainties are reported for so-called R-scan jets with radius parameters R=0.2 and 0.6, reconstructed with the ATLAS detector in proton-proton collisions at a centre-of-mass energy of s√=13TeV, corresponding to an integrated luminosity collected during 2015, 2016, and 2017 at the LHC. R-scan jets are reconstructed from energy deposits forming topological locally-weighted clusters of calorimeter cells, using the anti-kt algorithm with R=0.2 and 0.6. Jets are calibrated with a series of Monte Carlo simulation-based corrections and in situ techniques in data. A new in situ method to quantify differences between data and Monte Carlo simulation is presented. This method, referred as ``Direct Matching'', compares the pT of Rscan jets against a fully-calibrated R=0.4 jet.