Artefacts and <A2> power corrections : revisiting the MOM Z_psi and Z_V
Ph. Boucaud, F. de Soto, J.P. Leroy, A. Le Yaouanc, J. Micheli, H., Moutarde, O. Pene, J. Rodriguez-Quintero
TL;DR
This paper investigates the impact of A^2 condensate power corrections on the overlap quark propagator, comparing findings with previous gluon analyses and discussing artefacts affecting the results.
Contribution
It provides a detailed analysis of A^2 power corrections in the quark propagator and discusses artefacts, extending prior gluon-based studies.
Findings
Results align with previous gluon analysis
Artefacts significantly influence the extraction of power corrections
Provides insights into the role of A^2 condensate in quark propagators
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.
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