A non-perturbative determination of Z_V and b_V for O(a) improved quenched and unquenched Wilson fermions

A. Schafer; D. Pleiter; G. Schierholz; H. Stuben; M. Gockeler; P.E.L. Rakow; R. Horsley; T. Bakeyev

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A non-perturbative determination of Z_V and b_V for O(a) improved quenched and unquenched Wilson fermions

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arxiv hep-lat/0209148 v1 pith:SKARWDVL submitted 2002-09-23 hep-lat

T. Bakeyev , M. Gockeler , R. Horsley , D. Pleiter , P.E.L. Rakow , A. Schafer , G. Schierholz , H. Stuben This is my paper

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keywords fermionsimprovedquenchedunquenchedwilsonchargecoefficientcomputation

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abstract

By considering the local vector current between nucleon states and imposing charge conservation we determine, for $O(a)$ improved Wilson fermions, its renormalisation constant and quark mass improvement coefficient. The computation is performed for both quenched and two flavour unquenched fermions.

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