Prompt charmonia hadroproduction in High Energy Factorization with tree-level NLO corrections
Abstract
We consider prompt J/ψ, χcJ and ηc production in high energy pp collisions in the framework of non-relativistic QCD. We apply high-energy factorization with taking into account tree-level next-to-leading order corrections to the production amplitudes. Using several CCFM-evolved gluon densities in the proton and a previously proposed matching scheme to merge the leading and higher-order contributions, we extract the long-distance matrix elements for the entire charmonium family from a simultaneous fit to available LHC data. We provide predictions for the transverse momentum spectra and relative production rates σ(ψ′)/σ(J/ψ) and σ(χcJ)/σ(J/ψ) and find them to be in good agreement with the LHC data within the theoretical and experimental uncertainties across a wide kinematic region. We demonstrate that taking into account the tree-level NLO corrections improves the global description of the data.
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BibTeX
@misc{prokhorov2026prompt,
title = {{Prompt charmonia hadroproduction in High Energy Factorization with tree-level NLO corrections}},
author = {A. A. Prokhorov and S. P. Baranov and A. V. Lipatov and M. A. Malyshev},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.29297},
eprint = {2610.29297},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.29297},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Prompt charmonia hadroproduction in High Energy Factorization with tree-level NLO corrections
AU - A. A. Prokhorov
AU - S. P. Baranov
AU - A. V. Lipatov
AU - M. A. Malyshev
PY - 2026
DA - 2026/10/21
PB - arXiv
DO - 10.48550/arxiv.2610.29297
UR - https://arxiv.org/abs/2610.29297
AB - We consider prompt J/ψ, χ_cJ and η_c production in high energy pp collisions in the framework of non-relativistic QCD. We apply high-energy factorization with taking into account tree-level next-to-leading order corrections to the production amplitudes. Using several CCFM-evolved gluon densities in the proton and a previously proposed matching scheme to merge the leading and higher-order contributions, we extract the long-distance matrix elements for the entire charmonium family from a simultaneous fit to available LHC data. We provide predictions for the transverse momentum spectra and relative production rates σ(ψ^′)/σ(J/ψ) and σ(χ_cJ)/σ(J/ψ) and find them to be in good agreement with the LHC data within the theoretical and experimental uncertainties across a wide kinematic region. We demonstrate that taking into account the tree-level NLO corrections improves the global description of the data.
ER -