Process dependence of the gluon Sivers function in inclusive $pp$ collisions: theory

Abstract

Within the color gauge invariant generalized parton model (CGI-GPM), which includes initial and final state interactions in a transverse momentum dependent formalism, we present the complete results, at leading order in perturbative QCD, for transverse single-spin asymmetries in the inclusive hadroproduction of $J/\psi$ and $D$ mesons, pions and direct photons.

arXiv comment7 pages, 2 figures; to appear in the Proceedings of the 23rd International SPIN Symposium (SPIN 2018), Ferrara (Italy), 10-14 September 2018

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