Progress in Proton Fragmentations

The majority of semi-inclusive deep inelastic studies of the proton structure have focused on the analysis of hadron production in the current-fragmentation region, while hadrons produced in the target fragmentation region, formed under the participation of the spectator partons, have been largely unexplored, until now. The large acceptance of the CLAS12 detector at Jefferson Lab, allowed a multi-dimensional studies of semi-inclusive hadron production both in current and target fragmentation regions with large statistics. Results of the separation of the two regions time will be presented shading light for the first time to an intermediate region called the Soft Region. Multi-Dimensional extraction of the Single Spin Asymmetries leading to the fracture functions will be presented. Future measurements at an upgraded JLab22 will be discussed.