O(a) improvement of the axial current in lattice QCD to one-loop order of perturbation theory

M. L\"uscher (DESY); P. Weisz (Max-Planck-Institut fuer Physik)

O(a) improvement of the axial current in lattice QCD to one-loop order of perturbation theory

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arxiv hep-lat/9606016 v1 pith:IJFUO2WI submitted 1996-06-26 hep-lat

M. Lüscher (DESY) , P. Weisz (Max-Planck-Institut fuer Physik) This is my paper · ORCID

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keywords currentaxialimprovementlatticeone-looporderperturbationtheory

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abstract

The conservation of the isovector axial current in lattice QCD with massless Wilson quarks is studied to one-loop order of perturbation theory. Following a strategy described in a previous publication, the O($a$) counterterm required for on-shell improvement of the current is computed. We also confirm an earlier result of Wohlert for the coefficient in front of the SW term in the improved action.

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