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Electromagnetic transition form factors of baryons in the space-like momentum region

  • Hèlios Sanchis-Alepuz
  • Reinhard Alkofer
  • Christian S. Fischer
Regular Article - Theoretical Physics

Abstract.

We present results from a calculation of the electromagnetic transition form factors between ground-state octet and decuplet baryons as well as the octet-only \(\Sigma^{0}\) to \(\Lambda\) transition. We work in the combined framework of Dyson-Schwinger equations and covariant Bethe-Salpeter equations with all elements, the baryon three-body wave function, the quark propagators and the dressed quark-photon vertex determined from a well-established, momentum dependent approximation for the quark-gluon interaction. We discuss in particular the similarities among the different transitions as well as the differences induced by SU(3)-isospin symmetry breaking. We furthermore provide estimates for the slopes of the electric and magnetic \(\Sigma^{0}\) to \(\Lambda\) transitions at the zero photon momentum point.

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Copyright information

© SIF, Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Hèlios Sanchis-Alepuz
    • 1
  • Reinhard Alkofer
    • 1
  • Christian S. Fischer
    • 2
  1. 1.Institut für PhysikKarl-Franzens-Universität Graz, NAWI GrazGrazAustria
  2. 2.Institut für Theoretische PhysikJustus-Liebig-Universität GiessenGiessenGermany

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