2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/176417The NNLO QCD corrections to the $e^+e^- \to 3$ jets can be decomposed according to their colour factors. Out of the seven colour factors, three are of QED-type: $1/N^2$, $N_F/N$ and $N_F^2$. We use the antenna subtraction method to compute these contributions, providing complete expressions for the subtraction terms in $N_F/N$ and $N_F^2$.Talk presented at Loops and Legs 2006, EisenachHigh Energy Physics - Phenomenologytext