Non-perturbative renormalization of vector and axial vector currents in quenched QCD for a renormalization group improved gauge action

2003/09/30 by CP-PACS Collaboration, PACS Collaboration, K. Ide +28
Physics and Astronomy · #Particle physics theoretical and experimental studies #Physics of Superconductivity and Magnetism #Quantum Chromodynamics and Particle Interactions #hep-lat

paper · pdf · doi:10.48550/arxiv.hep-lat/0309185

Lattice2003(improve), 3 pages

arxiv created 2003/09/30 · arxiv updated 2012/08/27

Abstract

Renormalization constants of vector (Z_V) and axial-vector (Z_A) currents are determined non-perturbatively in quenched QCD for an RG-improved gauge action and a tadpole-improved clover quark action using the Schrödinger functional method. Meson decay constants f_ρ and f_π show much better scaling when Z_V and Z_A estimated for infinite physical volume are used instead of Z-factors from tadpole-improved one-loop perturbation theory.

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