Parton Orbital Angular Momentum and Final State Interactions

Abstract

Definitions of orbital angular momentum based on Wigner distributions are used as a framework to discuss the connection between the Ji definition of the quark orbital angular momentum and that of Jaffe and Manohar.We find that the difference between these two definitions can be interpreted as the change in the quark orbital angular momentum as it leaves the target in a DIS experiment. The mechanism responsible for that change is similar to the mechanism that causes transverse single-spin asymmetries in semi-inclusive deep-inelastic scattering.

6 pages, 2 figures, version to appear in PRD

References in corpus (6)

• Generalized parton correlation functions for a spin-1/2 hadron
• Quark Wigner Distributions and Orbital Angular Momentum
• Wilson lines and orbital angular momentum
• Transverse target spin asymmetry in inclusive DIS with two-photon exchange
• Modeling the Phase-Space Distribution around Massive Halos
• Cusped light-like Wilson loops in gauge theories

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