Mapping Quarks and Gluons: From Cold Nuclear Matter to Nucleon Tomography ; Experimental Studies with ALICE, LHCb, CLAS12, and R&D for the Electron-Ion Collider
This HDR presents a unified experimental program mapping the partonic structure of hadrons and nuclei across collider and fixed-target experiments (ALICE, LHCb, CLAS12) and R&D toward the Electron-Ion Collider, summarizing selected measurements that illustrate complementary probes and techniques for constraining quark and gluon dynamics.
I will describe ALICE forward W cross-section measurements in proton-lead collisions, the first in this kinematic region, and discuss their impact on quark nuclear PDFs. I will present LHCb studies of prompt and non-prompt J/Ψ and Ψ(2S) production, showing rapidity and pT dependencies that help disentangle initial-state gluon modifications from final-state effects. I will review Jefferson Lab DVCS measurements and the current CLAS12 analysis on a longitudinally polarized target, demonstrating high-precision access to generalized parton distributions for nucleon tomography.
The presentation will conclude by outlining how the EIC will integrate and extend these efforts to refine nucleon and nuclear PDFs, advance three-dimensional nucleon structure, and probe gluon saturation, and by presenting progress on detector R&D relevant to ePIC: the CyMBaL cylindrical Micromegas tracker.
Nucleon Structure Laboratory (LSN) – The internal structure of hadrons
DPhN, LSN