Speaker
Description
Large radius jets are useful objects to describe massive resonances produced with a high boost which decay fully hadronically. During the Run~2 run of the LHC, the ATLAS experiment developed a new algorithm to define large-radius jets, clustering Unified Flow Objects (UFO) constituents and applying the constituent subtraction (CS), soft killer (SK) and soft drop (SD) techniques. In this paper, the calibration of the jet energy and mass of the ATLAS large-radius jets is described. The calibration procedure employs both simulation-based and data-based (in-situ) methods and validates the jet detector response in data using the full Run~2 dataset. The residual uncertainties on the jet energy and mass scale are close to 1% for transverse momenta up to 1 TeV and are controlled to 2-3\% up to 2 TeV , enabling sensitive searches and precise studies of boosted object production in the Standard Model.