Speaker
Description
The structure of nucleons as well as nuclei at large longitudinal momenta, x, is crucial for understanding QCD confinement, the origin of non-perturbative charm and beauty in the proton, or for explaining the origins of the nuclear EMC effect. Parton distribution functions (PDFs), which describe the longitudinal structure of hadrons, are typically determined in global analysis of experimental data. Unfortunately, the high-x region is hard to determine due to different theoretical effects that enter in this challenging region. In this talk I review such theoretical effects and present a recent analysis where we have accounted for them and determined nuclear PDFs using high-x data from JLAB experiments. I also give a brief overview of other possibilities to constrain the high-x structure of nucleons as well as nuclei.