We use the dynamical gluon configurations provided by the MILC collaboration in a study of the charmonium spectrum and ψ leptonic width. We examine sea quark effects on mass splitting and on the leptonic decay matrix element for light masses as low as ms/5, while keeping the strange quark mass fixed and the lattice spacing nearly constant.
|Original language||English (US)|
|Number of pages||3|
|Journal||Nuclear Physics B - Proceedings Supplements|
|State||Published - Mar 2004|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Nuclear and High Energy Physics