The reconstruction of jets, missing ET and boosted heavy particles with ATLAS in Run II

The reconstruction of jets, missing ET and boosted heavy particles decaying hadronically has proved to be of extreme importance in Run 1 of the LHC, and has great potential to uncover new physics with Run 2 data. ATLAS has implemented and commissioned several new techniques for the analysis and interpretation of hadronic final states at the LHC. These include event-by-event pile-up subtraction algorithms for jets and missing ET, jet substructure, quark-gluon discrimination, and jet tagging tools for the identification of boosted heavy particles. The excellent ATLAS detector capabilities, in particular its high resolution longitudinally segmented calorimeter and inner detector, have enabled the development of complex clustering and calibration algorithms for the reconstruction of jets, missing ET, and jet substructure, and its validation and calibration in data using large datasets collected during 2012. A summary of the most modern jet, missing ET, and jet substructure and tagging tools developed in ATLAS, and their calibrations are presented, using extensive Run 1 data and the first studies using Run 2 Monte Carlo simulations and early data.