Speaker
Description
We present recent results from the JAM Collaboration’s program to determine the one- and three-dimensional structure of the proton and other hadrons through global QCD analyses of high-energy scattering data. Recent developments include studies of the isospin dependence of the nuclear EMC effect and the stability of parton distribution functions (PDFs) at large momentum fractions, with particular attention to nuclear and power corrections. We also present the first simultaneous global analysis of transverse momentum dependent and collinear PDFs in the proton, providing a unified framework for connecting its three-dimensional and longitudinal structure. Finally, we discuss applications of generative AI to hadron structure, including pixel-based approaches to partonic imaging and the use of normalizing flows to accelerate and improve global QCD analyses of PDFs and related functions.