Non-perturbative renormalisation and improvement of the local vector current for quenched and unquenched Wilson fermions
arXiv:hep-lat/0305014 · doi:10.1016/j.physletb.2003.11.050
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.
15 pages, 5 figures, Latex, Final version