Delta-baryon mass in a covariant Faddeev approach

Understand

We present a calculation of the three-quark core contribution to the mass of the Delta-baryon in a Poincare-covariant Faddeev framework.

• A consistent setup for the dressed-quark propagator, the quark-quark and quark-diquark interactions is used, where all the ingredients are solutions of their respective Dyson-Schwinger or Bethe-Salpeter equations in rainbow-ladder truncation.
• We discuss the evolution of the Delta mass with the current-quark mass and compare to the previously obtained mass of the nucleon.