Speaker
Description
Analyses of exclusive meson electroproduction data obtained with the CLAS detector at Jefferson Lab have provided the only information on the evolution of the nucleon resonance (N) electroexcitation amplitudes—known as the γ pN electrocouplings—over the mass range up to 1.75 GeV for photon virtualities from the photon point up to Q² = 5.0 GeV². Recent advances in these studies and their impact on understanding the strong interaction dynamics underlying the emergence of hadron mass (EHM) and N structure will be presented. In particular, evidence for new insights into EHM from analyses of the Δ(1232)3/2⁺, N(1440)1/2⁺, and Δ(1600)3/2⁺ electrocouplings within the framework of continuum Schwinger methods (CSM) will be discussed. New opportunities to explore manifestations of dynamical chiral symmetry breaking through comparative studies of the electrocouplings of chiral partner N states will also be outlined. The electroexcitation of the new baryon state N’(1720)3/2⁺ has been established over a broad range of Q² up to 5.0 GeV². The extracted N’(1720)3/2⁺ electrocouplings provide promising opportunities for theoretical investigations of the structural features of baryon states that have remained elusive for decades. Finally, prospects for future studies of N electrocouplings with the CLAS12 detector in the 12-GeV era—and following a potential increase of CEBAF energy to 22 GeV—will be highlighted.