Identification of muon candidates in pp collisions at sqrt(s)=900 GeV with the ATLAS detector

This paper presents the first reconstructed muon candidates observed with the ATLAS detector in pp collisions at LHC. An integrated luminosity of 7.6/ub at sqrt(s)=900 GeV was collected by the ATLAS detector in 2009 with stable beam and both tracking systems, the inner detector and muon spectrometer, at full magnetic field strength. There are 50 muon candidates in the final sample. Their distributions for the kinematic variables eta, phi, p and pT of are compared to non-diffractive minimum bias Monte Carlo simulation.