Calculation of the nucleon magnetic moments by dispersion-theory methods

Henry D.I. Abarbanel, Curtis Gove Callan, David H. Sharp

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


The magnetic moments of the neutron and proton are calculated within the framework of the S-matrix perturbation theory recently developed by Dashen and Frautschi. In the present context, this method expresses the magnetic moments in terms of a dispersion integral involving photopion production. Evaluation of this integral in terms of contributions from appropriate low-mass intermediate states yields results for the individual magnetic moments which are larger than the experimental values by about a factor of two. The calculation does, however, give an approximately correct value for the ratio of the isovector moment to the isoscalar moment, and a value for the isoscalar moment that agrees with the experimental value to within about a factor of two.

Original languageEnglish (US)
Pages (from-to)1225-1238
Number of pages14
JournalPhysical Review
Issue number4
StatePublished - 1966

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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