Differential tt Cross Section Measurements as a Function of Variables other than Kinematics
Abstract
An overview of cross section measurements as a function of jet multiplicities and jet kinematics in association with tt production is presented. Both the ATLAS and the CMS collaborations performed a large number of measurements at different center-of-mass energies of the LHC using various tt decay channels. Theoretical predictions of these quantities usually rely on parton shower simulations that strongly depends on tunable parameters and come with large uncertainties. The measurements are compared to various theoretical descriptions based on different combinations of matrix-element calculations and parton-shower models.
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