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Delta and Omega electromagnetic form factors in a three-body covariant Bethe-Salpeter approach

The electromagnetic form factors of the Delta and Omega baryons are calculated in the framework of Poincare-covariant bound-state equations. The quark-quark interaction is truncated to a single dressed-gluon exchange where for the dressings we use two different models and compare the results. The calculation predicts an oblate shape for the electric charge distribution and a prolate shape for the magnetic dipole distribution. We also identify the necessity of including pion-cloud corrections at low photon-momentum transfer.

preprint2013arXivOpen access
Helios Sanchis-AlepuzRichard WilliamsReinhard Alkofer
hep-ph
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Open access3 authors1 topic
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Helios Sanchis-AlepuzRichard WilliamsReinhard Alkofer

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