Speaker
Prof.
Ting-Wai Chiu
(National Taiwan University)
Description
We study the charm physics in two-flavors lattice QCD with optimal domain-wall fermion. The gauge ensembles are generated on the $24^3 \times 48 $ lattice with the extent in the fifth dimension $ N_s = 16 $, and the plaquette gauge action at $ \beta = 6.10 $,
for three sea-quark masses corresponding to the pion masses in the range 265-465 MeV. We determine the lattice spacing by the Wilson flow, and the strange and the charm quark masses
by the masses of the vector mesons $ \phi(1020) $ and $ J/\psi(3097) $ respectively. We compute the point-to-point quark propagators and measure the time-correlation functions of all 2-quark meson interpolators, and determine the lowest-lying mass spectra of charmed mesons with quark contents c-cbar, c-sbar and c-dbar. Moreover, we determine the pseudoscalar decay constants $ f_K $, $ f_D $ and $ f_{D_s} $, which are in good agreement with the experimental values.
Primary author
Prof.
Ting-Wai Chiu
(National Taiwan University)
Co-authors
Dr
Tung-Han Hsieh
(Academia Sinica, Taiwan)
Dr
Yu-Chih Chen
(National Taiwan University)
