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Non-perturbative renormalisation and improvement of the local vector current for quenched and unquenched Wilson fermions

T. Bakeyev·M. Gockeler·R. Horsley·D. Pleiter·P. E. L. Rakow·G. Schierholz·H. Stuben
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Abstract

By considering the local vector current between nucleon states and imposing charge conservation, we determine its renormalisation constant and quark mass improvement coefficient for Symanzik $O(a)$ improved Wilson fermions. The computation is first performed for quenched fermions (and for completeness also with unimproved fermions) and compared against known results. The two-flavour unquenched case is then considered.

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T. Bakeyev, M. Gockeler, R. Horsley, D. Pleiter, P. E. L. Rakow, G. Schierholz, H. Stuben. 2003-12-23. Non-perturbative renormalisation and improvement of the local vector current for quenched and unquenched Wilson fermions. https://doi.org/10.1016/j.physletb.2003.11.050

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