Measurement of the inclusive $t\bar{t}$ cross-section in $pp$ collisions at $\sqrt{s} = 8 TeV $ with the ATLAS detector

This poster presents the measurement of the inclusive top-quark pair-production cross-section in the lepton+jets channel with 20.2 fb$^{-1}$ of 8 TeV data using a neural-network discriminant and the reconstructed mass of the hadronically decaying $W$ boson. Events are selected by requiring at least four jets, where at least one of the jets is required to be $b$-tagged. Signal events from the $t\bar{t}$ processes are enhanced using a neural-network discriminant based on final-state observables. The $t\bar{t}$ production cross-section is obtained from a binned maximum-likelihood fit to the neural-network discriminant and the reconstructed mass of the hadronically decaying $W$ boson. The inclusive $t\bar{t}$ cross-section is measured to be consistent with the Standard Model prediction.