Charmed meson spectra and decay constants with one-loop $O(a)$ improved relativistic heavy quark action

Details Charmed meson spectra and decay constants with one-loop $O(a)$ improved relativistic heavy quark action Charmed meson spectra and decay constants with one-loop $O(a)$ improved relativistic heavy quark action

2004-09-15

arxiv.org/abs/hep-lat/0409086v1

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, 4 figure, talk presented at Lattice2004(heavy), Fermilab, June 21-26, 2004

Scientific paper

We calculate charmed meson spectra and decay constants in lattice QCD employing one-loop $O(a)$ improved heavy quark action and axial-vector currents. In quenched simulations at $a \sim 0.1$ fm with the plaquette gauge action as well as a renormalization-group improved one, it is shown that the deviation from the continuum dispersion relation and the violation of space-time symmetry for the pseudoscalar meson decay constants are substantially reduced, once the $O(a)$ improvement is applied. Preliminary results with two flavors of dynamical quarks are also presented.

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