Wigner distributions and quark orbital angular momentum

Abstract

We discuss the quark phase-space or Wigner distributions of the nucleon which combine in a single picture all the information contained in the generalized parton distributions and the transverse-momentum dependent parton distributions. In particular, we present results for the distribution of unpolarized quarks in a longitudinally polarized nucleon obtained in a light-front constituent quark model. We show how the quark orbital angular momentum can be extracted from the Wigner distributions and compare it with alternative definitions.

8 pages, 2 figures, 1 table, contribution to the proceedings of the QCD Evolution workshop 2012, May 14-17, JLab

References in corpus (9)

• Quark Wigner Distributions and Orbital Angular Momentum
• Azimuthal spin asymmetries in light-cone constituent quark models
• Geometrical approach to the proton spin decomposition
• Probing Parton Orbital Angular Momentum in Longitudinally Polarized Nucleon
• Electroweak structure of the nucleon, meson cloud and light-cone wavefunctions
• Naive time-reversal odd phenomena in semi-inclusive deep-inelastic scattering from light-cone constituent quark models
• Tensor charges of light baryons in the Infinite Momentum Frame
• Improvement of the Theta+ width estimation method on the Light Cone
• Baryon vector and axial content up to the 7Q component

Cited by in corpus (5)

• Diffractive Dijet Production and Wigner Distributions from the Color Glass Condensate
• Constructing phase space distributions with internal symmetries
• Color Confinement and Supersymmetric Properties of Hadron Physics from Light-Front Holography
• QCD on the Light-Front -- A Systematic Approach to Hadron Physics
• Light-Front Holographic Quantum Chromodynamics