The ePIC detector at the upcoming Electron-Ion Collider will open an unprecedented window into the inner workings of protons and nuclei. Optimized for polarized deep inelastic scattering, semi-inclusive and exclusive processes, and diffractive channels, ePIC will achieve unmatched precision in these measurements. It will enable detailed studies of the origin of nucleon spin and the...
We discuss the latest release of polarized PDFs from the NNPDF collaboration and highlight the recent progress in their determination. Specifically, first, we include most currently available data at polarized colliders; second, we investigate the improved hyper-optimization strategy of our neural network methodologies for the extraction of PDF; third, we use an improved theory framework,...
Polarized targets are essential tools in probing nucleon spin structure within high-energy and nuclear physics experiments. The SpinQuest polarized target system at Fermilab includes key components such as a cryogenic evaporation refrigerator for high-power cooling at 1 K, a roots pump stack with 17000 m3/hour of pumping capacity, a microwave generator, and NMR system. The polarization is...
We present recent progress in precision TMD physics, focusing on three key developments. First, we provide the N3LO twist-2 matching for polarized TMDs, along with the complete set of N3LO polarized DGLAP evolution kernels for quark (gluon) helicity and quark transversity distributions. Second, we achieve N3LL accuracy in predictions for the SIDIS $q_T$ spectrum, the lepton-hadron transverse...
