Download or read book Properties of Charmonium in Lattice QCD with 2+1 Flavors of Improved Staggered Sea Quarks written by and published by . This book was released on 2004 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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{sub s}/5, while keeping the strange quark mass fixed and the lattice spacing nearly constant.