Speaker
Description
The COMPASS experiment took data between 2000 and 2022 using the SPS muon and hadron beams in the CERN North Area and fixed unpolarized and polarized nuclear targets. It remains one of the most impactful experiments in the field due to its contributions in exploring the spin structure of the nucleon. One of the key objectives of COMPASS is to investigate transverse momentum dependent PDFs by measuring transverse single-spin asymmetries in semi-inclusive deep inelastic scattering and the Drell-Yan process. Of particular interest is the Sivers TMD PDF, which is connected to spin-orbit correlations in the proton and is expected to change sign between SIDIS and DY, a process dependence that is unusual for PDFs. This poster will present recent results of COMPASS Sivers asymmetry measurements in SIDIS and DY.
