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

Y. Kayaba·S. Aoki·M. Fukugita·K-I. Ishikawa·Y. Iwasaki·K. Kanaya·T. Kaneko·Y. Kuramashi·M. Okawa·A. Ukawa·T. Yoshié
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Abstract

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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Y. Kayaba, S. Aoki, M. Fukugita, K-I. Ishikawa, Y. Iwasaki, K. Kanaya, T. Kaneko, Y. Kuramashi, M. Okawa, A. Ukawa, T. Yoshié. 2004-09-15. Charmed meson spectra and decay constants with one-loop $O(a)$ improved relativistic heavy quark action. https://arxiv.org/abs/hep-lat/0409086

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