Quarkonium production and TMDs at LHC
U. D'Alesio, F. Murgia, C. Pisano, S. Rajesh
TL;DR
This paper discusses a phenomenological program studying quarkonium production at LHCb using TMDs, focusing on production mechanisms, spin asymmetries, and the gluon Sivers function in proton-proton collisions.
Contribution
It introduces a TMD-based approach to analyze quarkonium production mechanisms and spin asymmetries at LHCb, emphasizing the gluon Sivers function and initial/final state interactions.
Findings
Analysis of color-singlet and color-octet contributions in quarkonium production.
Investigation of azimuthal and single-spin asymmetries.
Insights into the gluon Sivers function and spin effects.
Abstract
In this contribution we briefly discuss an ongoing phenomenological programme on quarkonium production in unpolarized and polarized proton-proton collisions in a fixed target setup at LHCb, the LHCSpin project. Within a TMD approach, we aim at considering in particular: the relative role of the NRQCD color-singlet and color-octet production mechanisms, both for unpolarized and polarized quarkonium production; the study of azimuthal and transverse single-spin asymmetries as a phenomenological tool for learning about the almost unknown gluon Sivers function; the role of initial- and final-state interactions for spin asymmetries.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · High-Energy Particle Collisions Research · Quantum Chromodynamics and Particle Interactions