Single- and and double-differential cross-sections in tt final states in the +jets channe
Abstract
We present measurements of single- and double-differential cross-sections in tt final states in the lepton+jets channel, unfolded to particle and parton levels with both resolved and boosted topologies considered. Fully corrected spectra are presented as functions of the top-quark as well as tt system kinematic variables and jet multiplicities in data from pp collisions at s=13 TeV collected in 2015 and 2016 by the ATLAS detector at the LHC, corresponding to integrated luminosity of 36\,fb-1 . Measurements provided detailed information on the top-quark production and decay, enabling precision tests of modern Monte Carlo generators as well as latest fixed-order Standard Model predictions. Good agreement between the theoretical predictions and the data is observed within reduced systematic uncertainties w.r.t. previous ATLAS measurements.