Impact of the triple-gluon correlation functions on the single spin asymmetries in pp collisions

Abstract

We calculate the single-spin-dependent cross section formula for the D-meson production and the direct-photon production in the pp collision induced by the twist-3 triple-gluon correlation functions in the transversely polarized nucleon. We also present a model calculation for the asymmetries in comparison with the preliminary data given by RHIC, showing the impact of the correlation functions on the asymmetries.

4 pages, 2 figures. To appear in the proceedings of the XIX International Workshop on Deep-Inelastic Scattering and Related Subjests(DIS2011), Apr.11-15, 2011, Virginia, USA