Baryonic correlators in the random instanton vacuum

Apr, 1993
37 pages
Published in:
  • Nucl.Phys.B 412 (1994) 143-168
e-Print:
Report number:
  • SUNY-NTG-92-45A

Citations per year

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Abstract:
We study baryon and diquark correlation functions in the framework of an instanton model for the QCD vacuum. The model naturally accomodates a light scalar diquark. As a consequence, the correlation functions for the nucleon and delta are found to be qualitatively different. Using a complete set of all available correlation functions we determine masses and coupling constants for these particles. We compare our results with predictions from QCD sum rules and recent lattice measurement of point-to-point correlators.
  • quantum chromodynamics
  • correlation function
  • vacuum state: instanton
  • quark: diquark
  • quark quark: interaction
  • interaction: quark quark
  • symmetry: SU(3)
  • baryon: multiplet
  • multiplet: baryon
  • nucleon: mass