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arXiv · 2011.10350

Investigating the transverse momentum dependent gluon Sivers function in quarkonium production at $pp$ colliders

U. D'Alesio·F. Murgia·C. Pisano
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Abstract

In this contribution, we will present a short overview of the transverse momentum dependent (TMD) approach as a tool for studying the 3-dimensional structure of hadrons in high-energy (un)polarized hadron collisions. We will then summarize the present status of a running research programme that aims at constraining the poorly known transverse momentum dependent gluon Sivers function, through the study of single spin asymmetries in quarkonium (mainly $J/\psi$), pion, and $D$-meson production in polarized proton-proton collisions at RHIC. Finally, we will shortly discuss perspectives for this field of research, emphasizing in particular its role in the physics programme of LHC in the fixed-target setup and NICA.

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U. D'Alesio, F. Murgia, C. Pisano. 2020-11-20. Investigating the transverse momentum dependent gluon Sivers function in quarkonium production at $pp$ colliders. https://doi.org/10.1007/s00601-021-01605-4

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