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. P\`ene , J Rodr\'i guez-Quintero

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C. Roiesnel

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classification ✦ hep-ph hep-lat

keywords correctionsfunctionsgaugegreenlandauperturbativearguebehavior

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We show that QCD Green functions in Landau Gauge exhibit sizable $O(1/\mu^2)$ corrections to the expected perturbative behavior at energies as high as 10 GeV. We argue that these are due to a $<A^2>$-condensate which does not vanish in Landau gauge.

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Power Corrections to Perturbative QCD and OPE in Gluon Green Functions

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