Abstract
Exclusive production of light vector mesons in deep inelastic scattering is calculated at next-to-leading order in the dipole picture in the limit of high photon virtuality. The resulting expression is free of any divergences and suitable for numerical evaluations. The higher-order corrections are found to be numerically important, but they can be mostly captured by the nonperturbative fit parameters describing the initial condition for the small- evolution of the dipole scattering amplitude. The vector meson production cross section is shown to depend only weakly on the meson distribution amplitude and the factorization scale. We also present phenomenological comparisons of our result to the existing exclusive and production data from HERA and find an excellent agreement at high virtualities.
5 More- Received 12 April 2022
- Accepted 13 June 2022
- Corrected 15 March 2023
DOI:https://doi.org/10.1103/PhysRevD.105.114038
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society
Physics Subject Headings (PhySH)
Corrections
15 March 2023
Correction: Equations (24) and (25) contained errors and have been fixed. Text indicating validity was added after Eq. (13). The fourth sentence of the last paragraph in Sec. IV contained an error and has been set right.