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

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

2003-05-15

arxiv.org/abs/hep-lat/0305014v2

Phys.Lett.B580:197-208,2004

Physics

High Energy Physics

High Energy Physics - Lattice

15 pages, 5 figures, Latex, Final version

Scientific paper

10.1016/j.physletb.2003.11.050

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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