Infrared propagators of Yang-Mills theory from perturbation theory

We show that the correlation functions of ghosts and gluons for the pure Yang-Mills theory in Landau gauge can be accurately reproduced for all momenta by a one-loop calculation. The key point is to use a massive extension of the Faddeev-Popov action. The agreement with lattice simulation is excellent in $d=4$. The one-loop calculation also reproduces all the characteristic features of the lattice simulations in $d=3$ and naturally explains the peculiarities of the propagators in $d=2$.