Transverse Single Spin Asymmetries of charged hadrons at forward and backward rapidity from $p^{\uparrow }+p$, $p^{\uparrow }+\mathrm{Al}$, and $p^{\uparrow }+\mathrm{Au}$ collisions in PHENIX

Jeongsu Bok

Transverse Single Spin Asymmetries (TSSAs) in transversely polarized proton-proton collisions ($p^{\uparrow }+p$) have been a fruitful source for studying the spin structure of the…