Inputs to Jet Reconstruction and Calibration with the ATLAS Detector Using Proton-Proton Collisions at $\sqrt{s}=900$ GeV

Preliminary studies of jet reconstruction and calibration in the ATLAS detector using a sample of proton-proton collisions at a center-of-mass energy of $\sqrt{s}=900$ GeV are presented. The studies focus on comparisons between data and Monte Carlo simulations. The comparisons pertain to properties of jets characterizing the inputs to jet reconstruction and impacting the different calibration schemes developed by ATLAS. Jets are constructed using the anti-$k_t$ algorithm and with two different input constituents: noise-suppressed calorimeter towers and topological clusters. Distributions are shown to be in reasonable agreement in data and Monte Carlo simulations.