O($a^2$)-improved actions for heavy quarks

Fine lattice simulations with chirally symmetric fermions

“…On the other hand, we need more statistics before studying the chiral properties of these masses and other basic observables such as f π , f K and nucleon masses. Other studies of the chiral symmetry dynamics [2,3,9] and the charm quark physics [1] are also in progress.…”

“…For heavy quarks we are testing a new lattice formulation designed to suppress discretization effects [1], while for light sea/valence quarks we require good chiral symmetry to control possible systematic effects near the physical light quark masses. We use a variant of domain-wall fermions [2,3], as described below, together with the tree-level Symanzik gauge action, for our 2+1-flavor gauge configuration generations.…”