Abstract
Abstract
We discuss the problem of lattice artefacts in QCD simulations enhanced by the introduction of dynamical charmed quarks. In particular, we advocate the use of a massive renormalization scheme with a close to realistic charm mass. To maintain O(a) improvement for Wilson type fermions in this case we define a finite size scheme and carry out a nonperturbative estimation of the clover coefficient c
sw. It is summarized in a fit formula c
sw(g
0
2
) that defines an improved action suitable for future dynamical charm simulations.
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics
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