Measurements of Transverse-Momentum Distributions in Semi-Inclusive Deep-Inelastic Scattering
Gratefully acknowledging support by the INT.
In this contribution, a brief overview of existing measurements of transverse-momentum distributions in semi-inclusive deep-inelastic scattering from HERMES and COMPASS is given. An even briefer outlook on medium-term possibilities will be provided and how all those lay a path to a future Electron-Ion Collider.