Publications
Publication Information
| Title | Target normal single-spin asymmetry in inclusive electron-nucleon scattering in the 1/Nc expansion |
| Authors | Jose Goity, Christian Weiss, Cintia Willemyns |
| JLAB number | JLAB-THY-23-3783 |
| LANL number | (None) |
| Other number | DOE/OR/23177-5802 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
| Other Funding: | National Science Foundation Fonds de la Recherche Scientifique (FNRS) (Belgium |
|
Journal Compiled for Physical Review D Volume 107 Page(s) 094026 | |
| Publication Abstract: | The target normal single-spin asymmetry in inclusive electron-nucleon scattering is studied in the low-energy regime that includes the Delta resonance. The particular interest in the asymmetry resides in that it is driven by two-photon exchange effects. It probes the spin-dependent absorptive part of the two-photon exchange amplitude, which is free of infrared and collinear singularities and represents the most pristine expression of two-photon exchange dynamics. The study presented here uses the 1/Nc expansion of QCD, which combines the N and Delta through the emergent SU(4) spin-flavor symmetry in the baryon sector and allows for a systematic construction of the transition EM currents. The analysis includes the first subleading corrections in the 1/Nc expansion and presents results for elastic and inelastic final states. The asymmetry is found to be in the range 0.1 to 1 %. The Delta resonance plays an important role as an intermediate state in the elastic asymmetry and as a final state in the inclusive asymmetry. |
| Experiment Numbers: | other |
| Group: | THEORY CENTER |
| Document: | |
| DOI: | https://doi.org/10.1103/PhysRevD.107.094026 |
| Accepted Manuscript: | PhysRevD.107.094026.pdf |
| Supporting Documents: | |
| Supporting Datasets: | |