  Recent measurements at the Large Hadron Collider allow for a robust and
precise characterisation of the electro-weak interactions of the top quark. We
present the results of a global analysis at next-to-leading order precision
including LHC, LEP/SLD and Tevatron data in the framework of the Standard Model
Effective Field Theory. We include a careful analysis of the impact of
correlations among measurements, as well as of the uncertainties in the
Effective Field Theory setup itself. We find remarkably robust global fit
results, with central values in good agreement with the Standard Model
prediction, and 95% probability bounds on Wilson coefficients that range from
$\pm$ 0.35 to $\pm$ 8 TeV$^{-2}$. This result represents a considerable
improvement over previous studies, thanks to the addition of differential
cross-section measurements in associated production processes of top quarks and
neutral gauge bosons.
