Pseudoscalar Mesons and Instantons

Jul, 1982
16 pages
Published in:
  • Nucl.Phys.B 214 (1983) 237-252
  • Published: 1983
Report number:
  • CERN-TH-3351

Citations per year

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Abstract: (Elsevier)
We discuss the QCD sum rules for the correlators of pseudoscalar currents with quantum numbers of π, K, η, η′ mesons. In the framework of the instanton model of the QCD vacuum suggested earlier by the author, we calculate SU(3) breaking effects such as K , η masses and ηη′ mixing, as well as the U(1) breaking effect, the η′ mass. We conclude that all these phenomena are very well reproduced by this model.
  • HADRON SPECTROSCOPY
  • PSEUDOSCALAR MESON: MULTIPLET
  • MULTIPLET: PSEUDOSCALAR MESON
  • PSEUDOSCALAR MESON: CURRENT
  • FIELD EQUATIONS: INSTANTON
  • QUANTUM CHROMODYNAMICS: SUM RULE
  • FIELD THEORY: VACUUM STATE
  • PI
  • K: MASS
  • MASS: K