The nucleons are responsible for more than 99% of the mass of the visible matter in the universe. The global properties of the nucleon, such as its spin, come from its internal quark-gluon structure. The internal structure of the nucleon is mostly governed by the strong interaction. Although a successful theory (QCD) to describe the strong interaction was established 40 years ago, our understanding of the strong interaction in its truly strong region is still very limited. Understanding nucleon's 3-d internal structure and the strong interaction in the strong region is the new frontier of the modern nuclear physics. Experimentally, electron scattering and electron-ion colliding have been powerful and precise tools in this study. Selected highlights from Jefferson Lab experiments in spin-flavor and transverse momentum dependent structure studies will be presented. Future plans at Jefferson Lab and perspectives at possible future electron-ion colliders will be discussed.

Argonne Physics Division Seminar Schedule