Theoretical progress on the formulation and classification of the quark and gluon orbital angular momenta (OAM) is reviewed. Their relation to parton distributions and open questions and puzzles are discussed. We give a status report on the lattice calculation of the parton kinetic and canonical OAM and point out several strategies to calculate the quark and gluon canonical OAM on the lattice.
|European Physical Journal A
|Published - Jun 1 2016
Bibliographical notePublisher Copyright:
© 2016, SIF, Springer-Verlag Berlin Heidelberg.
ASJC Scopus subject areas
- Nuclear and High Energy Physics