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Baryons in and beyond the quark-diquark model

We examine the nucleon's electromagnetic form factors in a Poincare-covariant Faddeev framework. The three-quark core contributions to the form factors are obtained by employing a quark-diquark approximation. We implement the self-consistent solution for the quark-photon vertex from its inhomogeneous Bethe-Salpeter equation. We find that the resulting transverse parts which add to the Ball-Chiu vertex have no significant impact on nucleon magnetic moments. The current-quark mass evolution of the form factors agrees with results from lattice QCD.

preprint2010arXivOpen access
G. EichmannR. AlkoferC. S. FischerA. KrassniggD. Nicmorus
hep-phhep-latnucl-th
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Open access5 authors3 topics
Imported metadata coverageMissing code, dataset, citation and institution fields are tracked without dominating the paper.Details
Citations: 0Reviews: 0Saves: 0Code: not linkedDataset: not linkedInstitutions: 0

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G. EichmannR. AlkoferC. S. FischerA. KrassniggD. Nicmorus

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