Exclusive heavy vector meson production at next-to-leading order in the dipole picture
Mäntysaari, H., & Penttala, J. (2021). Exclusive heavy vector meson production at next-to-leading order in the dipole picture. Physics Letters B, 823, Article 136723. https://doi.org/10.1016/j.physletb.2021.136723
Published inPhysics Letters B
© 2021 The Author(s). Published by Elsevier B.V. Funded by SCOAP3.
We calculate exclusive production of a longitudinally polarized heavy vector meson at next-to-leading order in the dipole picture. The large quark mass allows us to separately include both the first QCD correction proportional to the coupling constant αs, and the first relativistic correction suppressed by the quark velocity v2. Both of these corrections are found to be numerically important in J/ψ production. The results obtained are directly suitable for phenomenological calculations. We also demonstrate how vector meson production provides complementary information to structure function analyses when one extracts the initial condition for the energy evolution of the proton small-x structure.
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Related funder(s)Academy of Finland; European Commission
Funding program(s)Academy Project, AoF; Research costs of Academy Research Fellow, AoF; Postdoctoral Researcher, AoF; Academy Research Fellow, AoF
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Additional information about fundingThis work was supported by the Academy of Finland, projects 314764, 338263 and 346567 (H.M.) and 321840 (J.P.), and by the EU Horizon 2020 research and innovation programme, STRONG-2020 project (Grant Agreement No. 824093). The content of this article does not reflect the official opinion of the European Union and responsibility for the information and views expressed therein lies entirely with the authors. ...
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