Charmonium Spectrum from Quenched Lattice QCD with Tadpole Improvement Action

Abstract

We report here our lattice simulation on the charmonium spectra in the quenched approximation. Because the full adjustment on the nonperturbative parameters such as $C_E$, $C_B$, $m_0{a}_s$ and $r_s$ needs many calculation time, we only adjust two of them, $m_0{a}_s$ and $r_s$(${\xi }_3$ plays this role in the paper) but with some rescale for mass splitting. After the rescale, we find that our results are in agreement with the experiment ones.

Comments: 12 pages