Three-dimensional imaging of the nucleon in momentum space

Transverse-momentum dependent parton distributions (TMDs) are studied in the framework of quark models. Results for the six T-even TMDs are obtained from the overlap of three-quark light-cone wave functions, using both the chiral quark-soliton model and a light-cone constituent quark model. Furthermore, quark model relations among TMDs are reviewed and their physical origin is discussed in terms of rotational-symmetry properties of the nucleon state in its rest frame.
Comment: 8 pages, 1 figure, Prepared for International Conference on the Structure and Interactions of the Photon and 19th International Workshop on Photon-Photon Collisions (PHOTON2011), Spa, Belgium, 22 - 27 May 2011