Speaker
Description
Over the years, hadrons and their electromagnetic properties have been probed by a
variety of scattering experiments, with recent results rising compelling questions and
challenging the way we think about their structure.
In this presentation, I offer an overview of recent advancements in the precise
determination of the evolution of the electromagnetic couplings with squared 4-
momentum transfer, across both spacelike and timelike kinematic domains. I also
introduce the experimental revelation of long-anticipated yet previously elusive baryon
states, alongside the detection of exotic multiquark states.
Theoretical frameworks, driven by these new data, have witnessed significant progress,
enhancing consistency, refining uncertainty control, and broadening their applicability.
Beyond phenomenological quark models and sophisticated data analyses, I illustrate
that contemporary QCD calculations and continuum-based QCD functional methods,
such as Dyson-Schwinger-Bethe-Salpeter methods, are converging towards a unified
spectroscopic picture.
I particularly emphasize our current understanding of light baryons, which have
undergone meticulous scrutiny and precision analysis, thanks to detectors in the
acceptance frontier in facilities worldwide. These investigations have unveiled the rich
diversity in their internal composition.
Furthermore, I introduce the interpretation of various dynamic baryonic properties,
underscoring the importance of integrating independent theoretical methodologies. For
instance, the combination of chiral effective field theory with lattice QCD extrapolations
and large NC limit relations incorporating quark-antiquark degrees of freedom, plays a
crucial role in controlling uncertainties.
