Higher-order corrections to exclusive heavy vector meson production

Submission summary

 As Contributors: Heikki Mäntysaari · Jani Penttala Arxiv Link: https://arxiv.org/abs/2106.12825v1 (pdf) Date accepted: 2022-03-25 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:
Publication decision taken: accept

Editorial decision: For Journal SciPost Physics Proceedings: Publish
(status: Editorial decision fixed and (if required) accepted by authors)

Submission & Refereeing History

Submission 2106.12825v1 on 25 June 2021

Reports on this Submission

Report

The work put insight in vector meson production as a complementary information to the structure functions for extracting the initial condition for the small-x evolution of the dipole-proton scattering amplitude. Higher-order corrections to exclusive J/ψ production is described. Low t HREA data show very good matching. This is very well written and I recommend this important work for publication.

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