Speaker
Ms
Weeam Albaltan
(New Mexico State University, Princess Nourah bint Abdulrahman University)
Description
We study the semi-inclusive production of hard, isolated photons in unpolarized and polarized lepton-proton collisions, i.e., $\ell p\to \ell\gamma X$. We analyze the transverse nucleon single-spin asymmetry within the collinear twist-3 formalism in perturbative QCD to leading order accuracy (LO). We find that this spin asymmetry is generated by twist-3 dynamical quark-gluon-quark ($qgq$) correlations in the nucleon through so-called soft-fermion pole and hard pole contributions. In particular, the latter are of interest as they -in principle- allow 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.
Authors
Ms
Weeam Albaltan
(New Mexico State University, Princess Nourah bint Abdulrahman University)
Dr
Marc Schlegel
(New Mexico State University)
Dr
Alexei Prokudin
(Penn State University Berks, Jefferson Lab)
