Volume 352 - XXVII International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2019) - Working Group 6: Spin and 3D Structure
The gluon Sivers function and its process dependence from RHIC data
C. Pisano,* U. D'Alesio, C. Flore, F. Murgia, P. Taels
*corresponding author
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Pre-published on: August 17, 2019
Published on: October 04, 2019
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).
DOI: https://doi.org/10.22323/1.352.0198
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