Electromagnetic currents of the pion-nucleon system

T. Skawronski, B. Blankleider, A. N. Kvinikhidze

Research output: Contribution to journalArticle

Abstract

Pion photoproduction amplitudes are calculated from a set of equations that have been derived by coupling an external photon to all places in a dressed pion-nucleon vertex. The calculation is consistent with gauge invariance, charge conservation, unitarity, and covariance. To provide input to the photoproduction amplitude, a photon-nucleon vertex is calculated from a set of equations derived by complete attachment of photons to a dressed nucleon propagator. We check the accuracy of this vertex by extracting its nucleon electromagnetic form factors.

Original languageEnglish
Article number034001
Number of pages18
JournalPhysical Review C
Volume99
Issue number3
DOIs
Publication statusPublished - Mar 2019

Keywords

  • Electromagnetic currents
  • pion-nucleon system
  • gauge invariance
  • charge conservation
  • Pion photoproduction

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