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arXiv · hep-ph/0009274

Instantons and Nucleon Magnetism

Hilmar Forkel
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Abstract

We construct improved QCD sum rules for the nucleon magnetic moments by implementing direct-instanton contributions to the operator product expansion of the nucleon correlator in a magnetic background field. The instanton contributions are found to affect only those sum rules which had previously been considered unstable. The new sum rules show a high degree of stability and reproduce the experimental values of the nucleon magnetic moments for values of the magnetic quark condensate susceptibility which are consistent with other estimates.

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Hilmar Forkel. 2000-09-22. Instantons and Nucleon Magnetism. https://doi.org/10.1142/9789812811653_0006

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