Understanding the properties of nuclear matter and its emergence through the underlying partonic structure and dynamics of quarks and gluons requires a new experimental facility in hadronic physics known as the Electron-Ion Collider (EIC). The EIC will address some of the most profound questions concerning the emergence of nuclear properties by precisely imaging gluons and quarks inside...
After a brief introduction to the Electron-Ion Collider (EIC) and the Joint ECFA-NuPECC-APPEC Activity on "Synergies between the Electron-Ion Collider and the Large Hadron Collider experiments", I will go into examples of such synergies, focusing mostly on the QCD related ones: parton densities of protons and nuclei, quarkonium production, transverse momentum dependent parton distributions...
One of the fundamental questions in our understanding of the proton structure is the proton spin puzzle. Theoretically, adding all the helicities and orbital angular momenta (OAM) of the quarks and gluons in the proton should give us 1/2, the spin of the proton. At the same time, adding the experimentally measured spin carried by the quarks and gluons in the proton comes up short, presently...
In this talk, we will present a proposal to unveil the hadron tomography through the nucleon energy-energy correlators (NEEC) at hadron colliders (RHIC and LHC) and the future electron-ion collider (EIC), focusing on spinning gluon effects and small-x saturation. We will show that the gluon saturation at small-x predicts a significantly different shape for the angular distribution of the NEEC....
Spin-orbit coupling is a ubiquitous phenomenon across many areas of contemporary science. I discuss aspects of the spin-orbit coupling of quarks and gluons orbiting inside hadrons. In the first part, I derive a novel momentum sum rule where the spin-orbit correlation plays a crucial role. This is the momentum version of the Jaffe-Manohar spin sum rule. In the second part, I point out the...
The discovery of the pointlike constituents of the proton inspired massive experimental efforts to use deep inelastic scattering (DIS) to understand the partonic structure of hadrons. Early experiments were performed at fixed-target facilities, which made important findings but were limited in accessible kinematics. The Hadron-Electron Ring Accelerator (HERA), operated at DESY between...
