The gluon Sivers function and its process dependence from RHIC data

2019/08/20 by Cristian Pisano, Pisano, Cristian, Umberto D'Alesio +7
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.1908.07312

6 pages, 3 figures, to appear in the Proceedings of the 27th International Workshop on Deep Inelastic Scattering and Related Subjects (DIS 2019), Torino (Italy), 8-12 April 2019

arxiv created 2019/08/20 · arxiv updated 2019/08/21

Abstract

We present a phenomenological analysis of available data on single spin asymmetries for pion and D meson production in proton-proton collisions at RHIC within the color gauge invariant generalized parton model (CGI-GPM), which includes initial (ISIs) and final (FSIs) state interactions in a transverse momentum dependent formalism. This study allows us, for the first time, to put preliminary constraints on the two independent gluon Sivers functions entering the model. We also present a comparison with the simpler generalized parton model (without ISIs and FSIs).

Related

• Process dependence of the gluon Sivers function in inclusive pp collisions: phenomenology
• Process dependence of the gluon Sivers function in inclusive pp collisions: theory
• Process dependent Sivers function and implication for single spin asymmetry in inclusive hadron production
• The gluon Sivers distribution: status and future prospects
• Sivers asymmetry in inelastic J/ψ leptoproduction at the EIC