Gluon Sivers function in dijet production at the EIC
Miguel G. Echevarria, Patricia Andrea Gutierrez Garc\'ia, Ignazio Scimemi
TL;DR
This paper predicts large gluon Sivers asymmetries in dijet production at the EIC using TMD factorization, evolution schemes, and current gluon distribution extractions, highlighting their dependence on TMD evolution.
Contribution
It develops a formalism for the gluon Sivers function in polarized dijet production and incorporates TMD evolution at N$^3$LO for EIC predictions.
Findings
Predicted Sivers asymmetry between 5-50%.
Strong dependence on TMD evolution schemes.
Highlights importance of gluon TMD distributions.
Abstract
The transverse-momentum-dependent (TMD) factorization theorem for dijet production in deep-inelastic scattering is used here to make predictions of the gluon Sivers function. We revise the previously studied unpolarized case and develop the formalism for a transversely polarized target. We study the impact of TMD evolution in two different schemes and we use the current extractions of the evolution kernel at NLO to make predictions for the future Electron-Ion Collider (EIC). The results strongly depend on the TMD gluon distributions and their evolution kernel. Big values of the Sivers asymmetry at the EIC are predicted, between 5-50
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Taxonomy
TopicsParticle physics theoretical and experimental studies · High-Energy Particle Collisions Research · Quantum Chromodynamics and Particle Interactions