New Results from the RHIC Spin Program

The Relativistic Heavy Ion Collider (RHIC) is the first and only collider in the world that is able to run polarized proton beams, allowing for spin measurements at higher energies compared to fixed target experiments. Longitudinally polarized proton-proton collisions probe the spin structure of the proton, while transversely polarized proton-proton collisions are sensitive to transverse momentum dependent distributions and their multiparton correlation counter parts. This talk will cover new results from the RHIC spin program including measurements of how much the gluon spin contributes to the overal proton spin and spin-momentum correlations in both the proton and hadronization, as well as future spin measurement opportunities with the STAR forward upgrade and the upcoming sPHENIX experiment. The spin program at the RHIC has been integral toward expanding our knowledge of the structure of the nucleon and the process of hadronization.