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

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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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Authors and Affiliations

  1. Institut für Physik, Karl-Franzens-Universität Graz, NAWI Graz, 8010, Graz, Austria

    Hèlios Sanchis-Alepuz & Reinhard Alkofer

  2. Institut für Theoretische Physik, Justus-Liebig-Universität Giessen, 35392, Giessen, Germany

    Christian S. Fischer

Authors
  1. Hèlios Sanchis-Alepuz
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  2. Reinhard Alkofer
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  3. Christian S. Fischer
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Correspondence to Hèlios Sanchis-Alepuz.

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Communicated by A. Peshier

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Sanchis-Alepuz, H., Alkofer, R. & Fischer, C.S. Electromagnetic transition form factors of baryons in the space-like momentum region. Eur. Phys. J. A 54, 41 (2018). https://doi.org/10.1140/epja/i2018-12465-x

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