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Higher-order corrections to exclusive heavy vector meson production

by Tuomas Lappi, Heikki Mäntysaari, Jani Penttala

Submission summary

As Contributors: Jani Penttala
Arxiv Link: (pdf)
Date submitted: 2021-06-25 11:40
Submitted by: Penttala, Jani
Submitted to: SciPost Physics Proceedings
Proceedings issue: DIS2021
Academic field: Physics
  • High-Energy Physics - Phenomenology
  • Nuclear Physics - Theory


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.

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Submission 2106.12825v1 on 25 June 2021

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