Further results on O(a) improved lattice QCD to one-loop order of perturbation theory

Details Further results on O(a) improved lattice QCD to one-loop order of perturbation theory Further results on O(a) improved lattice QCD to one-loop order of perturbation theory

1997-04-02

arxiv.org/abs/hep-lat/9704001v1

Nucl.Phys. B502 (1997) 251-268

Physics

High Energy Physics

High Energy Physics - Lattice

24 pages plain TeX, 2 postscript figures, macros and format files included

Scientific paper

10.1016/S0550-3213(97)00372-6

We present results at one-loop order of perturbation theory for various improvement coefficients in on-shell O($a$) improved lattice QCD. In particular we determine the additive counterterm required for on-shell improvement of the isovector vector current. Employing a general mass-independent renormalization scheme we also obtain the coefficients of the O($a$) counterterms which are proportional to the quark mass in the improved isovector pseudo-scalar, axial vector and vector operators. In the latter case a comparison with a recent non-perturbative study is made.

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