Publications
Publication Information
| Title | QCD angular momentum in N-Delta transitions |
| Authors | Jun-Young Kim, Ho-Yeon Won, Jose Goity, Christian Weiss |
| JLAB number | JLAB-THY-23-3795 |
| LANL number | arXiv:2304.08575 |
| Other number | DOE/OR/23177-6037 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Journal Compiled for Physics Letters B Page(s) 138083 | |
| Publication Abstract: | N -> Delta transitions offer new possibilities for exploring the isovector component of the QCD quark angular momentum (AM) operator causing the J^{u - d} flavor asymmetry in the nucleon. We extend the concept of QCD AM to transitions between baryon states, using light-front densities of the energy-momentum tensor in transversely localized states. We calculate the N -> Delta transition AM in the 1/N_c expansion, connect it with the J^{u - d} flavor asymmetry in the nucleon, and estimate the values using lattice QCD results. In the same setup we connect the transition AM to the transition GPDs sampled in hard exclusive electroproduction processes with N -> Delta transitions, enabling experimental study of the transition AM. |
| Experiment Numbers: | other |
| Group: | THEORY CENTER |
| Document: | |
| DOI: | https://doi.org/10.1016/j.physletb.2023.138083 |
| Accepted Manuscript: | 1-s2.0-S0370269323004173-main.pdf |
| Supporting Documents: | |
| Supporting Datasets: | |