arXiv:hep-lat/0310042·v1·High Energy Physics — Lattice
Properties of charmonium in lattice QCD with 2+1 flavors of improved staggered sea quarks
Massimo di Pierro · Aida X. El-Khadra · Steven Gottlieb · Andreas S. Kronfeld · Paul B. Mackenzie · Damian P. Menscher · Mehmet B. Oktay · Masataka Okamoto · James N. Simone
Abstract
We use the dynamical gluon configurations provided by the MILC collaboration in a study of the charmonium spectrum and psi leptonic width. We examine sea quark effects on mass splitting and on the leptonic decay matrix element for light masses as low as m_s/5, while keeping the strange quark mass fixed and the lattice spacing nearly constant.
Comments: Lattice2003(heavy)