Pion-photoproduction pole terms in the Skyrme model

Tamio Ikehashi, Koichi Ohta

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Abstract

We derive the isolated-pole terms for pion photoproduction on a nucleon in the Skyrme model. We employ a quantization method in which the Born terms of pion-nucleon elastic scattering are described by a pion-baryon linear interaction of O(NC - 1 2) and a pion-baryon quadratic interaction of O(NC 0). The baryon and pion pole terms in the photoproduction amplitude are generated by the pion-baryon linear interaction and the interactions with the external electromagnetic field. The identical result is also obtained by the use of a unitary-transformation method which reproduces the Yukawa coupling missing in the quantized hamiltonian. We also present a method which enables us to extract relations between the meson-baryon interactions and the Yukawa coupling diagrammatically.

Original languageEnglish
Pages (from-to)552-578
Number of pages27
JournalNuclear Physics, Section A
Volume556
Issue number4
DOIs
Publication statusPublished - 1993 May 24
Externally publishedYes

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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