The $\sqrt{mÎ_{QCD}$ scale in heavy quarkonium
arXiv:hep-ph/0307159 · doi:10.1016/j.physletb.2003.11.031
Abstract
We investigate the effects produced by the three-momentum scale $\sqrt{mÎ_{QCD}}$ in the strong coupling regime of heavy quarkonium. We compute the leading non-vanishing contributions due to this scale to the masses and inclusive decay widths. We find that they may provide leading corrections to the S-wave decay widths but only subleading corrections to the masses.
16 pages, LaTeX, 13 figures