A1 Journal article (refereed)
Complete calculation of exclusive heavy vector meson production at next-to-leading order in the dipole picture (2022)

Mäntysaari, H., & Penttala, J. (2022). Complete calculation of exclusive heavy vector meson production at next-to-leading order in the dipole picture. Journal of High Energy Physics, 2022(8), Article 247. https://doi.org/10.1007/jhep08(2022)247

JYU authors or editors

Publication details

All authors or editors: Mäntysaari, Heikki; Penttala, Jani

Journal or series: Journal of High Energy Physics

ISSN: 1126-6708

eISSN: 1029-8479

Publication year: 2022

Publication date: 24/08/2022

Volume: 2022

Issue number: 8

Article number: 247

Publisher: Springer

Publication country: Germany

Publication language: English

DOI: https://doi.org/10.1007/jhep08(2022)247

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/82867

Web address of parallel published publication (pre-print): https://arxiv.org/abs/2204.14031

Abstract

Exclusive production of transversely polarized heavy vector mesons in deep inelastic scattering at high energy is calculated at next-to-leading order accuracy in the Color Glass Condensate framework. In addition to the first QCD correction proportional to the strong coupling constant αs, we systematically also include the first relativistic correction proportional to the heavy quark velocity squared v2. When combined with our previously published results for longitudinal vector meson production at next-to-leading order accuracy, these results make phenomenological calculations of heavy vector meson production possible at the order OO(αsv0, α0sαs0v2). When applied to J/ψ and Υ production at HERA and at the LHC, a good agreement between the next-to-leading order calculations and experimental data is found. Additionally, we demonstrate that vector meson production can provide additional constraints compared to structure function analyses when the nonperturbative initial condition for the Balitsky-Kovchegov evolution equation is extracted.

Keywords: particle physics; quantum chromodynamics

Free keywords: deep inelastic scattering or small-x physics; higher-order perturbative calculations; quarkonium

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Ministry reporting: Yes

VIRTA submission year: 2022

JUFO rating: 2