Study of gluon GPDs in exclusive $J/\psi$ production in electron-proton scattering

S.V. Goloskokov; Xurong Chen; Ya-ping Xie

arxiv: 2408.05800 · v1 · pith:KOZTGKMUnew · submitted 2024-08-11 · ✦ hep-ph

Study of gluon GPDs in exclusive J/psi production in electron-proton scattering

S.V. Goloskokov , Ya-Ping Xie , Xurong Chen This is my paper

classification ✦ hep-ph

keywords gpdsgluonproductionapproachelectron-protonessentialexclusivefactorization

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Exclusive photoproduction of heavy $J/\psi$ meson is performed within handbag factorization method. The General Parton Distributions (GPDs) for gluons which are an essential ingredient here, are constructed using double distribution (DD) representation. The calculated cross section for few sets of gluon GPDs $H_g$ describe fine $J/\psi$ production experimental data from HERA to LHC energies. Based on this approach we estimate $J/\psi$ spin asymmetries determined by $E_g$ and $\tilde{H}_g$. The GPDs factorization approach can be employed to analyse heavy vector meson production in electron-proton scattering. Investigations of this reactions at future electron-ion colliders in USA and China can give an essential information on gluon GPDs.

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Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

Generalized parton distributions of valence, sea, and gluon components of the proton
hep-ph 2026-04 unverdicted novelty 6.0

Using basis light-front quantization wave functions, the authors calculate GPDs for proton components at low resolution scale and obtain results qualitatively similar to but smaller than the GUMP1.0 global extraction.