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arXiv · 1902.02425

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

U. D'Alesio·C. Flore·F. Murgia·C. Pisano·P. Taels
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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 $J/ψ$ and direct photon production, as well as a comparison with the simpler generalized parton model (without ISIs and FSIs), are also presented.

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U. D'Alesio, C. Flore, F. Murgia, C. Pisano, P. Taels. 2019-02-06. Process dependence of the gluon Sivers function in inclusive $pp$ collisions: phenomenology. https://arxiv.org/abs/1902.02425

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