Artefacts and <A2> power corrections : revisiting the MOM Z_psi and Z_V

Abstract

We extract the power corrections due to the A^2 condensate in the overlap quark propagator (vector part of the inverse propagator Z_psi). The results are consistent with the previous gluon analysis. The role of artefacts is extensively discussed.

arXiv comment33 pages, 5 figures

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