M. Aaboud, G. Aad, B. Abbott, O. Abdinov, B. Ali, K. Augsten, D. Caforio, M. Havránek, Z. Hubáček, M. Myška et al.: Search for heavy particles decaying into top-quark pairs using lepton-plus-jets events in proton-proton collisions at root s=13 TeV with the ATLAS detector. The European Physical Journal C 78(7), 565 (2018). doi:10.1140/epjc/s10052-018-5995-6