Statut | Confirmé |
Série | IPN-X |
Domaines | hep-ph |
Date | Mardi 16 Juillet 2019 |
Heure | 11:00 |
Institut | CPHT |
Salle | Salle de conférence Jean Lascoux, aile 0 |
Nom de l'orateur | Weiss |
Prenom de l'orateur | Christian |
Addresse email de l'orateur | |
Institution de l'orateur | Jefferson Lab |
Titre | Partonic angular momentum in the nucleons chiral periphery |
Résumé | We study the nucleons partonic angular momentum (AM) content at peripheral transverse distances b=O(1/M_\pi), where the structure is governed by chiral dynamics. We compute the nucleon form factors of the energy-momentum tensor in chiral effective field theory (ChEFT) and construct the transverse densities of AM at fixed light-front time. In the periphery the spin density is suppressed, and the AM is predominantly orbital. In the first-quantized representation of ChEFT in light-front form, the field-theoretical AM density coincides with the quantum-mechanical orbital AM density of the soft pions in the nucleons periphery. |
Numéro de preprint arXiv | |
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