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

2019/02/06 by U. D'Alesio, C. Flore, D'Alesio, U. +7
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.1902.02425

7 pages, 6 figures (11 plots); to appear in the Proceedings of the 23rd International SPIN Symposium (SPIN 2018), Ferrara, Italy, September 10-14, 2018

arxiv created 2019/02/06 · arxiv updated 2019/02/08

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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