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Higher-order corrections to exclusive heavy vector meson production
by Tuomas Lappi, Heikki Mäntysaari, Jani Penttala
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Submission summary
| Authors (as registered SciPost users): | Heikki Mäntysaari · Jani Penttala |
| Submission information | |
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| Preprint 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: | 28th Annual Workshop on Deep-Inelastic Scattering (DIS) and Related Subjects (DIS2021) |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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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.
Published as SciPost Phys. Proc. 8, 133 (2022)
Reports on this Submission
Anonymous Report 1 on 2022-3-11 (Invited Report)
- Cite as: Anonymous, Report on arXiv:2106.12825v1, delivered 2022-03-11, doi: 10.21468/SciPost.Report.4674
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.