We study relativistic charmonium on very fine quenched lattices (beta=6.4 and 6.6). We concentrate on the calculation of the hyperfine splitting between eta_c and J/psi, aiming for a controlled continuum extrapolation of this quantity. Results for the eta_c and J/psi wave functions are also presented.
Cite
@article{arxiv.hep-lat/0110104,
title = {Quenched charmonium near the continuum limit},
author = {TARO Collaboration and S. Choe and Ph. de Forcrand and M. Garcia Perez and S. Hioki and Y. Liu and H. Matsufuru and O. Miyamura and A. Nakamura and I. -O. Stamatescu and T. Takaishi and T. Umeda},
journal= {arXiv preprint arXiv:hep-lat/0110104},
year = {2015}
}