Quenched charmonium spectrum on anisotropic lattices

We present the results of quenched charmonium spectrum for S- and P-states, obtained by a relativistic heavy quark method on anisotropic lattices. Simulations are carried out using the standard plaquette gauge action and a meanfield-improved clover quark action at a−1t = 3–6 GeV with the renormalized anisotropy fixed to ξ ≡ as/at = 3. We study the scaling of our fine and hyperfine mass splittings, and compare with previous results.