Publications
Publication Information
| Title | The transverse nucleon single-spin asymmetry for the semi-inclusive production of photons in lepton-nucleon scattering |
| Authors | Alexei Prokudin, Marc Schlegel, Weeam Albaltan |
| JLAB number | JLAB-THY-19-3067 |
| LANL number | (None) |
| Other number | DOE/OR/23177-4790 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
| Other Funding: | NSF DOE |
|
Journal Compiled for Physics Letters B Volume 804 Page(s) 135367 Refereed | |
| Publication Abstract: | We study the semi-inclusive production of real, high-$p_T$, isolated photons in unpolarized and polarized lepton-proton collisions, $\ell p\to \ell\gamma X$. In particular we analyze the transverse nucleon single-spin asymmetry within the collinear twist-3 formalism in perturbative QCD to leading order (LO) accuracy. We find that this spin asymmetry is generated by twist-3 dynamical quark-gluon-quark ($qgq$) correlations in the nucleon through the so-called soft-fermion and hard pole contributions. Hence, this process unprecedentedly allows for a point-by-point scan of the support of the dynamical $qgq$ twist-3 matrix elements $F_{FT}(x,x^\prime)$ and $G_{FT}(x,x^\prime)$ in lepton-nucleon scattering experiments. |
| Experiment Numbers: | other |
| Group: | THEORY CENTER |
| Document: | |
| DOI: | https://doi.org/10.1016/j.physletb.2020.135367 |
| Accepted Manuscript: | 1-s2.0-S0370269320301714-main.pdf |
| Supporting Documents: | |
| Supporting Datasets: | |