A calculation of the Lepage-Mackenzie scale for the lattice axial and vector currents

Details A calculation of the Lepage-Mackenzie scale for the lattice axial and vector currents A calculation of the Lepage-Mackenzie scale for the lattice axial and vector currents

1998-08-24

arxiv.org/abs/hep-lat/9808032v1

Phys.Rev. D59 (1999) 074506

Physics

High Energy Physics

High Energy Physics - Lattice

13 pages. One postscript figure

Scientific paper

10.1103/PhysRevD.59.074506

We calculate the perturbative scales (q*) for the axial and vector currents for the Wilson action, with and without tadpole improvement, using Lepage and Mackenzie's formalism. The scale for the pseudoscalar density (times the mass) is computed as well. Contrary to naive expectation, tadpole improvement reduces q* by only a small amount for the operators we consider. We also discuss the use of a nonperturbative coupling to calculate the perturbative scale.

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