Speaker
Mr
Kevin Eckert
(WWU Muenster)
Description
We report on analysis aspects within a joint ongoing effort of the
ALPHA and RQCD Collaborations to compute charmed meson masses and the
leptonic decay constants $f_{{\rm D}}$ and $f_{{\rm D}_{\rm s}}$ in
$(2+1)$-flavour lattice QCD, employing non-perturbatively O($a$) improved
Wilson quarks and the tree-level Symanzik-improved gauge action.
Our studies make use of large-volume CLS configurations at two lattice
spacings ($a\approx 0.086,0.064$ fm) with open boundary conditions.
In particular, we present our implementation of distance preconditioning
(as proposed by de Divitiis et al.) for the calculation of heavy quark
propagators and discuss the resulting accuracy improvements of charmed
meson correlators and its impact on the extraction of charmed meson masses
and decay constants.
Primary author
Mr
Kevin Eckert
(WWU Muenster)
Co-authors
Dr
Jochen Heitger
(WWU Muenster)
Dr
Sara Collins
(University of Regensburg)
Mr
Stefan Hofmann
(German)
Wolfgang Soeldner
(Regensburg University)
