Charmonium with improved Wilson fermions II: The spectrum

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Using an improved fermion action to remove lattice spacing errors of O(a), we have calculated the charmonium spectrum. We show that after optimizing the ground state overlap using Coulomb gauge wave functions the ground state is reached after two time slices. We find for the J ψ - ηc mass splitting m J ψ - mηc = 73 ± 10 MeV.

Original languageEnglish (US)
Pages (from-to)372-374
Number of pages3
JournalNuclear Physics B (Proceedings Supplements)
Issue numberC
StatePublished - 1992
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics


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