Power Corrections to Perturbative QCD and OPE in Gluon Green Functions
D. Becirevic, Ph. Boucaud, F. De Soto, A. Le Yaouanc, J. P. Leroy, J. Micheli, O. Pène, J Rodrí guez-Quintero, C. Roiesnel
Abstract
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.
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