Comprehensive Study of SSAs within the JAM Global Analysis Framework

The analysis of single transverse-spin asymmetries (SSAs) gives us tremendous insight into the internal structure of hadrons.  For example, the Sivers and Collins effects in semi-inclusive deep-inelastic scattering (SIDIS), Sivers effect in Drell-Yan, and the Collins effect in electron-positron annihilation have been widely investigated over many years in order to perform 3D momentum-space tomography.  In addition, observables like A_N in proton-proton collisions are of interest due to their sensitivity to quark-gluon correlations.  In this talk I will discuss an updated QCD global fit of SSA data, within the Jefferson Lab Angular Momentum (JAM) Collaboration framework, from SIDIS, Drell-Yan, e⁺e⁻ annihilation into hadron pairs, and proton-proton collisions.  This includes now the impact of new SIDIS and pion A_N data on our analysis, jet A_N data, Collins hadron-in-jet measurements, as well as the role of lattice data on the tensor charge and the Soffer bound on transversity, in an attempt to give a comprehensive study of our current understanding of transverse SSAs.