Transverse Single-Spin Asymmetries in Proton-Proton Collisions at the AFTER@LHC Experiment in a TMD Factorisation Scheme
Our theoretical estimates for versus at GeV, (upper plots), and (lower plots) for inclusive photon production in processes, computed according to (6) and (7) of the text. Only the Sivers effect contributes. The computation is performed adopting the Sivers functions of  (SIDIS 1, left panels) and of  (SIDIS 2, right panels). The overall statistical uncertainty band, also shown, is obtained following the procedure described in Appendix A of .