| Summary: | The large number of top quarks produced at the CERN Large Hadron Collider makes it possible to measure the top-quark pair production cross-section differentially with respect to different observables. Differential measurements are important for precision tests and comparisons with Monte Carlo simulations and theoretical calculations. Top-quark pair production in particular is also an important process to study because it is a large background for many analyses. In this paper, several top-quark pair production differential measurements, performed with the ATLAS detector, are described including measurements of the kinematics of the top-quark pair system, of the jet multiplicity, and of the jet activity accompanying the top-quark pair system.
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