The European Physical Journal A

, Volume 31, Issue 4, pp 718–721 | Cite as

Heavy quarkonia from classical SU(3) Yang-Mills configurations

  • R. A. Coimbra
  • O. Oliveira
QNP 2006


A generalized Cho-Faddeev-Niemi ansatz for SU(3) Yang-Mills is investigated. The corresponding classical field equations are solved for its simplest parametrization. From these solutions it is possible to define a confining non-relativistic central potential used to study heavy quarkonia. The associated spectra reproduces the experimental spectra with an error of less than 3% for charmonium and 1% for bottomonium. Moreover, the recently discovered new charmonium states can be accomodate in the spectra, keeping the same level of precision. The leptonic widths show good agreement with the recent measurements. The charmonium and bottomonium E1 electromagnetic transitions widths are computed and compared with the experimental values.


12.39.Pn Potential models 12.38.Lg Other nonperturbative calculations 12.38.-t Quantum chromodynamics 


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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2007

Authors and Affiliations

  • R. A. Coimbra
    • 1
  • O. Oliveira
    • 1
  1. 1.Centro de Fısica ComputacionalUniversidade de CoimbraCoimbraPortugal

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