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arXiv · 2502.12061

Sullivan process near threshold and the pion gravitational form factors

Yoshitaka Hatta·Jakob Schoenleber
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Abstract

We propose a novel method to experimentally access the gravitational form factors (GFFs) of the charged pion $\pi^+$ through the Sullivan process in electron-proton scattering. We demonstrate that the cross sections of $J/\psi$-photoproduction and $\phi$-electroproduction near the respective thresholds are dominated by the gluon GFF of the pion to next-to-leading order in perturbative QCD. We predict cross sections for the Electron-Ion Collider and the Jefferson Lab experiments.

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Yoshitaka Hatta, Jakob Schoenleber. 2025-02-17. Sullivan process near threshold and the pion gravitational form factors. https://arxiv.org/abs/2502.12061

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