Axial current in QED and semi-naive dimensional renormalization

We renormalize at two loops the axial current and FF̃ in massless QED, using the recently proposed semi-naive dimensional renormalization scheme. We show that the results are in agreement with those in the Breitenlohner–Maison–ʹt Hooft–Veltman scheme, previously obtained indirectly by making a three-loop computation.