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arXiv · hep-ph/9504354

The Pion-Nucleon Coupling Constant in QCD Sum Rules

H. Shiomi·T. Hatsuda
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Abstract

The pion-nucleon coupling constant $g_{πN}$ is studied on the basis of the QCD sum rules. Both the Borel sum rules and the finite energy sum rules for $g_{πN}$ are used to examine the effects of higher dimensional operators (up to dim. 7) and $α_s$ corrections in the operator product expansion. Agreement with the experimental number is reached only when $S_π/S_N$ is greater than one, where $S_π$ ($S_N$) is the continuum threshold for the $g_{πN}$ (nucleon) sum rule.

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BibTeXRIS

H. Shiomi, T. Hatsuda. 1995-04-21. The Pion-Nucleon Coupling Constant in QCD Sum Rules. https://doi.org/10.1016/0375-9474(95)00359-9

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