出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We extend the Fermilab method for heavy quarks to include all interactions of dimension six in
the action. We discuss a subtlety in the power counting, which implies that, for heavy quarks,
certain interactions of dimension seven are commensurate with some of those of dimension six.
We then present tree-level matching conditions obtained from calculating the Compton scattering
amplitude for (lattice) QCD. When the matching conditions have been applied, the improved
action removes (tree-level) discretization errors of order a2 p3/mQ and a3 p3.
