This event has been cancelled.

Abstract: Hadronic physics in general, and the quark and gluon structure of protons, mesons, and nuclei in particular, has witnessed recent impressive progress. Hadronic science is driven both by the goal of achieving a deeper understanding of Quantum Chromodynamics, addressing key questions such as the origin of mass and spin of hadrons, and by the need of precise knowledge of hadronic structure for theory predictions in high-energy proton- and lepton-scattering experiments, from the Large Hadron Collider (LHC) to the Electron-Ion Collider (EIC) and neutrino facilities such as IceCube and the Forward Physics Facility (FPF).

In this talk I provide a pedagogical overview of our current understanding of the quark and gluon substructure of protons and nuclei, what we have conclusively learned about them in the past years, and what are the big questions that will be studied in the near future. Specifically, I present evidence for intrinsic charm quarks in the proton wave function; demonstrate the rich pattern of nuclear effects such as shadowing unravelled by proton-lead collisions; and highlight how searches for physics beyond the Standard Model at the high-energy frontier can be severely biased without a robust understanding of proton structure.