Gluon Tomography from Deeply Virtual Compton Scattering at Small-x

Abstract

We present a full evaluation of the deeply virtual Compton scattering (DVCS) cross section in the dipole framework in the small-x region. The result features the $\cos \varphi$ and $\cos 2\varphi$ azimuthal angular correlations which have been missing in previous studies based on the dipole model. In particular, the $\cos 2\varphi$ term is generated by the elliptic gluon Wigner distribution whose measurement at the planned electron-ion collider (EIC) provides an important information about the gluon tomography at small-x. We also show the consistency with the standard collinear factorization approach based on the quark and gluon generalized parton distributions (GPDs).

16 pages, 2 figures

References in corpus (6)

• Impact parameter dependent colour glass condensate dipole model
• Investigation of diffractive photoproduction of $J/\Psi$ in hadronic collisions
• The elliptic gluon GTMD inside a large nucleus
• Wigner, Husimi and GTMD distributions in the Color Glass Condensate
• Quarkonium production in coherent hadron-hadron interactions at the LHC
• Ballistic protons in incoherent exclusive vector meson production as a measure of rare parton fluctuations at an Electron-Ion Collider

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