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29 March 2024
 
  » arxiv » 1010.0206

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Baryons in and beyond the quark-diquark model
G. Eichmann ; R. Alkofer ; C. S. Fischer ; A. Krassnigg ; D. Nicmorus ;
Date 1 Oct 2010
AbstractWe 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.
Source arXiv, 1010.0206
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