  We investigate all the possible spin asymmetries that can occur in
back-to-back electron-jet production with hadron observed inside a jet in
electron-proton collisions. We derive the factorization formalism for all spin
asymmetries and perform phenomenological studies for the future electron ion
collider kinematics. We illustrate that the back-to-back electron-jet
production opens up new opportunities to study transverse momentum dependent
fragmentation functions and distribution functions.
