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- Title
Wigner Distributions in Light-Front Quark Models.
- Authors
Pasquini, B.; Lorcé, C.
- Abstract
We discuss the quark Wigner distributions which represent the quantum-mechanical analogues of the classical phase-space distributions. These functions can be obtained through a Fourier transform in the transverse space of the generalized transverse momentum dependent parton distributions, which encode the most general one-body information of partons in momentum space. In particular, we present a study within light-front quark models. The quark orbital angular momentum is also obtained from the phase-space average of the orbital angular momentum operator weighted with the Wigner distribution of unpolarized quark in a longitudinally polarized nucleon. The corresponding results calculated within different light-front quark models are compared with alternative definitions of the quark orbital angular momentum as given in terms of generalized parton distributions and transverse momentum dependent parton distributions.
- Subjects
WIGNER distribution; QUARK models; QUANTUM mechanics; MOMENTUM space; ANGULAR momentum (Mechanics)
- Publication
Few-Body Systems, 2014, Vol 55, Issue 5-7, p287
- ISSN
0177-7963
- Publication type
Article
- DOI
10.1007/s00601-013-0795-x