Speaker
Description
Transverse momentum dependent distribution and fragmentation functions are relevant in many processes when transverse momenta of final-state particles are observed. They provide additional information on the transverse spin and momentum structure of partons inside the nucleon that can otherwise not be accessed. For example, the Sivers function provides information on the transverse nucleon spin - parton orbit correlations while the Collins function relates the transverse quark spin to an azimuthal asymmetry of final-state hadrons. The unpolarized TMDs are even relevant at the highest energies when e.g. observing differential heavy boson or Higgs cross sections.
Many measurements related to TMDs have been obtained in semi-inclusive DIS, e+e- annihilation and hadron collisions. Their recent results will be summarized in this talk, together with an outlook of what to expect from the EIC.
