Speaker
Description
Transverse single spin asymmetries (TSSAs) can be observed in high energy scattering processes involving polarized protons. These observables provide valuable information about the 3-D structure of proton. Sivers function is a type of transverse momentum dependent (TMD) parton distribution function responsible for TSSAs. Although the quark Sivers function has been studied well in the recent past, the gluon Sivers function is not yet well-explored. For the case of photon + hadron production, we investigate the TSSAs induced by the gluon Sivers function in $pp$ collisions for SPD-NICA energies, and in $ep$ collisions relevant to the upcoming EIC. We also study model calculations of TMD distributions based on the quark target model in order to provide estimates for spin asymmetries in the context of EIC.