Two-photon Exchange Corrections to Single Spin Asymmetry of Neutron and $^3$He
arXiv:0911.5001 · doi:10.1088/0253-6102/55/3/22
Abstract
In a simple hadronic model, the two-photon exchange contributions to the single spin asymmetries for the nucleon and the $^3$He are estimated. The results show that the elastic contributions of two-photon exchange to the the single spin asymmetries for the nucleon are rather small while those for the $^3$He are relatively large. Besides the strong angular dependence, the two-photon contributions to the single spin asymmetry for the $^3$He are very sensitive to the momentum transfer.
11 pages, 8 figures