Exposing Emergent Hadron Mass in the Structure of Excited Nucleons*

Higgs boson couplings into QCD produce only a very small part of a baryon's mass and play little role in determining its structure. Such features are principally expressions of nonperturbative dynamics within the strong interaction sector of the Standard Model. The past decade has revealed the three pillars of this emergent hadron mass (EHM); namely, a nonzero gluon mass-scale, a process-independent effective charge, and dressed-quarks with constituent-like masses. Contemporary theory is now exposing their manifold expressions in hadron observables and highlighting the types of measurements that can be made in order to validate the EHM paradigm. In sketching such developments, this presentation will highlight the role of EHM in forming baryon spectra and structure.