Differential cross-section measurements for high momentum top, anti-top production in association with additional jets using the ATLAS detector and comparison to Monte-Carlo predictions

This poster presents precision single- and double-differential top, anti-top quark production cross-sections as functions of various event kinematics in events with a high transverse momentum (pT) top-quark using data recorded by the ATLAS detector from 2015 -- 2018. Results are derived from proton-proton collisions, at a centre of mass energy of $\sqrt(s) = 13$ TeV, using events with a high pT large-R jet, one muon or electron and at least two $b$-tagged jets in the final-state. Measured values are compared to different QCD theory models showcasing how suited current theories are to estimating complex, multi-scale, and above leading order top-pair processes.