pi- and rho-mesons, and their diquark partners, from a contact interaction

Understand

We present a unified Dyson-Schwinger equation treatment of static and electromagnetic properties of pseudoscalar and vector mesons, and scalar and axial-vector diquark correlations, based upon a vector-vector contact-interaction.

• A basic motivation for this study is the need to document a comparison between the electromagnetic form factors of mesons and those diquarks which play a material role in nucleon structure.
• This is an important step toward a unified description of meson and baryon form factors based on a single interaction.
• A notable result, therefore, is the large degree of similarity between related meson and diquark form factors.