Data collected during LHC Run 2 open the window to increasingly rare processes of top quark production. Furthermore, new analysis techniques lead to large improvements in sensitivity. We report the first observation of the production of a single top quark with a Z boson (tZq) in final states with three leptons, based on data collected by the CMS experiment in the years 2016 and 2017 at a centre-of-mass energy of 13 TeV. The measured cross section is compatible with standard model predictions. The presentation will also include further recent CMS results on top physics.
M. Mangano, M. Pepe-Altarelli, G. Unal.......... Refreshments will be served at 10h30