Estimate of the flavor singlet contributions to the hyperfine splitting in charmonium

Phys. Rev. D 70, 034506 – Published 17 August 2004
C. McNeile and C. Michael (UKQCD Collaboration)


We explore the splitting between flavor singlet and non-singlet mesons in charmonium using unquenched lattice QCD. The non-perturbatively improved clover formalism is used for both the sea and valence quarks. This has implications for lattice calculations of the hyperfine splitting in charmonium.


  • Received 17 February 2004
  • Revised 5 May 2004
  • Published 17 August 2004

© 2004 The American Physical Society

Authors & Affiliations

C. McNeile*, C. Michael, and ((UKQCD Collaboration))

  • Theoretical Physics Division, Dept. of Mathematical Sciences, University of Liverpool, Liverpool L69 3BX, United Kingdom

  • *Electronic address:

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