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Volume 346 - 23rd International Spin Physics Symposium (SPIN2018) - Parallel Session: Structure of the Nucleon: TMDs (A. Bacchetta, J. Drachenberg and B. Parsamyan)
Process dependence of the gluon Sivers function in inclusive $pp$ collisions: phenomenology
U. D'Alesio,* C. Flore, F. Murgia, C. Pisano, P. Taels
*corresponding author
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Pre-published on: 2019 August 19
Published on: 2019 August 23
Abstract
Within the so-called color gauge invariant generalized parton model, a TMD scheme including initial- (ISI) and final-state (FSI) interactions, we present a phenomenological analysis of available SSA data for pion and $D$-meson production in $pp$ collisions. This allows us, for the first time, to put a preliminary constraint on the two universal types of gluon Sivers function entering the model. Predictions for SSAs in $J/\psi$ and direct photon production, as well as a comparison with the simpler generalized parton model (without ISIs and FSIs), are also presented.
DOI: https://doi.org/10.22323/1.346.0049
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