Early Results on Jet Properties in ATLAS and Future Implications

Preliminary results are presented on the properties and calibration of jets in the ATLAS detector at the LHC using a sample of proton-proton collisions at a center-of-mass energy of $\sqrt{s}=7$ TeV. Comparisons of multiple inputs to jet reconstruction and calibration are studied, as well as the properties of charged tracks in jets and the internal jet structure. For some quantities of interest, the effect of the noise modeling is presented using inputs to jet finding with and without noise suppression. The inputs to the different jet calibration schemes developed in ATLAS are studied, and the corrections applied by the calibration schemes validated with data. Distributions show reasonable agreement between data and Monte Carlo simulations. These studies will help the Monte Carlo tuning effort and provide the first steps towards the successful commissioning of jet calibration in ATLAS.