We show that QCD Green functions in Landau Gauge exhibit sizable O(1/μ2) corrections to the expected perturbative behavior at energies as high as 10 GeV. We argue that these are due to a <A2>-condensate which does not vanish in Landau gauge.
@article{arxiv.hep-ph/0110172,
title = {Power Corrections to Perturbative QCD and OPE in Gluon Green Functions},
author = {D. Becirevic and Ph. Boucaud and F. De Soto and A. Le Yaouanc and J. P. Leroy and J. Micheli and O. Pène and J Rodrí guez-Quintero and C. Roiesnel},
journal= {arXiv preprint arXiv:hep-ph/0110172},
year = {2016}
}