Flavour decomposition of electromagnetic transition form factors of   nucleon resonances
  In Poincar\'e-covariant continuum treatments of the three valence-quark bound-state problem, the force behind dynamical chiral symmetry breaking also generates nonpointlike, interacting diquark correlations in the nucleon and its resonances. We detail the impact of these correlations on the nucleon's elastic and nucleon-to-Roper transition electromagnetic form factors, providing flavour-separation versions that can be tested at modern facilities. 
Jorge Segovia and Craig D. Roberts
nucl-th hep-lat hep-ph