Top quark production measurements at ATLAS

An overview of top quark production measurements using the ATLAS detector at the LHC is presented. Using 35 pb−1 of data, we measured the tt cross-section in the lepton+jets channel to 13% precision and set limits on the cross-section for the all hadronic decay channel[1, 2]. The measurement in the dilepton channel was performed using 0.70 fb−1 of data and was combined with the lepton+jets channel result for our most precise tt cross-section measurement of σpp→tt+X = 176±5 (stat)+13−10 (syst)±7 (lumi)[3,4]. Single top production was also measured in the t-channel using 0.70 fb−1 of data[5].