Properties of charmonium in lattice QCD with 2 + 1 flavors of improved staggered sea quarks

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 m s /5, while keeping the strange quark mass fix...

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Bibliographic Details
Published in:Nuclear physics. Section B, Proceedings supplement Proceedings supplement, 2004, Vol.129, p.340-342
Main Authors: di Pierro, Massimo, El-Khadra, Aida X., Gottlieb, Steven, Kronfeld, Andreas S., Mackenzie, Paul B., Menscher, Damian P., Oktay, Mehmet B., Okamoto, Masataka, Simone, James N.
Format: Article
Language:English
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Summary: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 m s /5, while keeping the strange quark mass fixed and the lattice spacing nearly constant.
ISSN:0920-5632
1873-3832
DOI:10.1016/S0920-5632(03)02575-1