Study of the Performance of the ATLAS Muon Spectrometer

The assesment of the different objects reconstruction and identification are an essential component of each physics analysis of the experiment. Here the performance of the ATLAS muon trigger and track reconstruction efficiency, and muon momentum scale and resolution, are presented, using an integrated luminosity of 33 $pb^{-1}$ from 2010 data. Z and W-bosons decay process are used as standard candles. These measurements are then used to the derive the corrections to be applied to the Monte Carlo simulation, used in all the analyses involving muons.