# Symanzik improvement with dynamical charm: a 3+1 scheme for Wilson quarks

Journal of High Energy Physics, Jun 2018

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 csw. It is summarized in a fit formula csw(g 0 2 ) that defines an improved action suitable for future dynamical charm simulations. Open image in new window

This is a preview of a remote PDF: https://link.springer.com/content/pdf/10.1007%2FJHEP06%282018%29025.pdf

Patrick Fritzsch, Rainer Sommer, Felix Stollenwerk, Ulli Wolff. Symanzik improvement with dynamical charm: a 3+1 scheme for Wilson quarks, Journal of High Energy Physics, 2018, 25, DOI: 10.1007/JHEP06(2018)025