Delta properties in the rainbow-ladder truncation of Dyson-Schwinger equations

Understand

We present a calculation of the three-quark core contribution to nucleon and Delta-baryon masses and Delta electromagnetic form factors in a Poincare-covariant Faddeev approach.

• A consistent setup for the dressed-quark propagator, the quark-quark, quark-'diquark' and quark-photon interactions is employed, where all ingredients are solutions of their respective Dyson-Schwinger or Bethe-Salpeter equations in a rainbow-ladder truncation.
• The resulting Delta electromagnetic form factors concur with present experimental and lattice data.