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Hyperon elastic electromagnetic form factors in the space-like momentum region

  • Regular Article - Theoretical Physics
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Abstract.

We present a calculation of the electric and magnetic form factors of ground-state octet and decuplet baryons including strange quarks. We work with a combination of Dyson-Schwinger equations for the quark propagator and covariant Bethe-Salpeter equations describing baryons as bound states of three (non-perturbative) quarks. Our form factors for the octet baryons are in good agreement with corresponding lattice data at finite Q2; deviations in some isospin channels for the magnetic moments can be explained by missing meson cloud effects. At larger Q2 our quark core calculation has predictive power for both, the octet and decuplet baryons.

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Authors and Affiliations

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

    Hèlios Sanchis-Alepuz & Christian S. Fischer

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

    Hèlios Sanchis-Alepuz

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  1. Hèlios Sanchis-Alepuz
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  2. Christian S. Fischer
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Correspondence to Hèlios Sanchis-Alepuz.

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Communicated by R. Alkofer

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Sanchis-Alepuz, H., Fischer, C. Hyperon elastic electromagnetic form factors in the space-like momentum region. Eur. Phys. J. A 52, 34 (2016). https://doi.org/10.1140/epja/i2016-16034-1

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