| HAL : in2p3-00740432, version 1 |
| arXiv : 1210.2581 |
| DOI : 10.1016/j.physletb.2013.01.007 |
| Fiche détaillée | Récupérer au format |
|
|
| Physics Letters B B (2012) 185-190 |
|
|
|
|
| Wilson lines and orbital angular momentum |
|
|
| C. Lorcé1, 2 |
|
|
| (2012) |
|
|
| We present an explicit realization of the Chen et al. approach to the proton spin decomposition in terms of Wilson lines, generalizing the light-front gauge-invariant extensions discussed recently by Hatta. Particular attention is drawn to the residual gauge freedom by further separating the pure-gauge term into contour and residual terms. Contrarily to a recent claim, we show that the Wigner distributions do not give access to the kinetic orbital angular momentum. Finally, we confirm from twist-2 arguments that the advanced, retarded and antisymmetric light-front canonical orbital angular momenta are the same. |
|
|
|
|
|
|
|
|
|
|
| 1 : | IPNO - Institut de Physique Nucléaire d'Orsay |
| 2 : | LPT - Laboratoire de Physique Théorique d'Orsay |
|
|
|
|
|
|
|
|
| Thème(s) | : | Physique/Physique des Hautes Energies - Phénoménologie Physique/Physique des Hautes Energies - Théorie Physique/Physique Nucléaire Théorique |
|
|
| Lien vers le texte intégral : |
| in2p3-00740432, version 1 | |
| http://hal.in2p3.fr/in2p3-00740432 | |
| oai:hal.in2p3.fr:in2p3-00740432 | |
| Contributeur : Sophie Heurteau | |
| Soumis le : Mercredi 10 Octobre 2012, 11:10:37 | |
| Dernière modification le : Lundi 15 Avril 2013, 17:35:27 | |