Erratum to: The electro-weak couplings of the top and bottom quarks — global fit and future prospects

In the course of follow-up work a mistake was discovered in the parameterization of the dependence of the W -boson helicity fractions in top quark decays. The dependence on two operator coefficients, C φtb and C bW , was erroneously omitted. Inclusion of this dependence leads to significantly stronger bounds on these operators from the current data and modifies also the HL-LHC prospects. The expectations for e + e − colliders are not affected. We present corrected results in this erratum.