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.
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Titolo: | WIGNER DISTRIBUTIONS AND QUARK ORBITAL ANGULAR MOMENTUM | |
Autori: | ||
Data di pubblicazione: | 2012 | |
Rivista: | ||
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. | |
Handle: | http://hdl.handle.net/11571/735821 | |
Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |