# Higher-order corrections to exclusive heavy vector meson production

### Submission summary

 As Contributors: Jani Penttala Arxiv Link: https://arxiv.org/abs/2106.12825v1 (pdf) Date submitted: 2021-06-25 11:40 Submitted by: Penttala, Jani Submitted to: SciPost Physics Proceedings Proceedings issue: DIS2021 Academic field: Physics Specialties: High-Energy Physics - Phenomenology Nuclear Physics - Theory

### Abstract

We present results for higher-order corrections to exclusive $\mathrm{J}/\psi$ production. This includes the first relativistic correction of order $v^2$ in quark velocity, and next-to-leading order corrections in $\alpha_s$ for longitudinally polarized production. The relativistic corrections are found to be important for a good description of the HERA data, especially at small values of the photon virtuality. The next-to-leading order results for longitudinal production are evaluated numerically. We also demonstrate how the vector meson production provides complementary information to the structure functions for extracting the initial condition for the small-$x$ evolution of the dipole-proton scattering amplitude.

###### Current status:
Editor-in-charge assigned