Investigating the transverse momentum dependent gluon Sivers function in quarkonium production at colliders
arXiv:2011.10350 · doi:10.1007/s00601-021-01605-4
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 ), pion, and -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.
21 pages, 6 figures (10 plots); Invited contribution to the Few-Body Systems special issue "New Trends in Hadron Physics: a Few-Body Perspective"
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