Abstract
Many observables of interest in lattice QCD are extracted from correlation functions involving the vector current. If Wilson fermions are used, it is therefore of practical importance that, besides the action, the current be improved in order to remove the leading discretization errors from the observables. Here we introduce and apply a new method to determine the improvement coefficient for the two most widely used discretizations of the current.
- Received 4 August 2015
DOI:https://doi.org/10.1103/PhysRevD.92.114503
© 2015 American Physical Society