ATLAS collaboration (2885 authors)Aguilar Saavedra, Juan AntonioAmor Dos Santos, Susana PatriciaAnjos, NunoAraque Espinosa, Juan PedroCastro, Nuno FilipeConde Mui\~no, PatriciaDa Cunha Sargedas De Sousa, Mario JoseFiolhais, MiguelGalhardo, BrunoGomes, AgostinhoGoncalo, RicardoJorge, PedroMachado Miguens, JoanaMaio, AmeliaManeira, JoseOleiro Seabra, Luis FilipeOnofre, Ant\'onioCosta Batalha Pedro, RuteSantos, HelenaSaraiva, JoaoSilva, Jose ManuelTavares Delgado, AdemarVeloso, FilipeWolters, Helmut2019-02-052019-02-052018-10-25http://dx.doi.org/10.1007/JHEP10(2018)159http://hdl.handle.net/10400.26/27584Measurements of differential cross sections of top quark pair production in association with jets by the ATLAS experiment at the LHC are presented. The measurements are performed as functions of the top quark transverse momentum, the transverse momentum of the top quark-antitop quark system and the out-of-plane transverse momentum using data from pp collisions at $ \sqrt{s}=13 $ TeV collected by the ATLAS detector at the LHC in 2015 and corresponding to an integrated luminosity of 3.2 fb$^{−1}$. The top quark pair events are selected in the lepton (electron or muon) + jets channel. The measured cross sections, which are compared to several predictions, allow a detailed study of top quark production.engjournal article2019-02-05