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Next-to-leading order perturbative QCD predictions for exclusive J/psi photoproduction in oxygen-oxygen and lead-lead collisions at the LHC

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arxiv 2210.16048 v2 pith:LAS4FITG submitted 2022-10-28 hep-ph

Next-to-leading order perturbative QCD predictions for exclusive J/psi photoproduction in oxygen-oxygen and lead-lead collisions at the LHC

Kari J. Eskola , Christopher A. Flett , Vadim Guzey , Topi L\"oyt\"ainen , Hannu Paukkunen This is my paper
classification hep-ph
keywords collisionspredictionscrossdistributionfunctionslead-leadnext-to-leadingorder
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present predictions for the cross sections of coherent $J/\psi$ photoproduction in lead-lead and oxygen-oxygen ultraperipheral collisions (UPCs) as a function of the $J/\psi$ rapidity at the LHC in the framework of collinear factorization at next-to-leading order (NLO) in perturbative QCD. Taking generalized parton distribution functions in their forward limit and using the EPPS21, nNNPDF3.0, and nCTEQ15WZSIH nuclear parton distribution functions, we update our recent results for Pb-Pb collisions, make detailed predictions for O-O collisions for several beam energy configurations, and examine the ratio of O-O and Pb-Pb UPC cross sections. We show that the latter observable allows one to significantly reduce the scale uncertainty of NLO predictions for this process.

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Forward citations

Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Relativistic corrections and high-energy resummation for exclusive heavy quarkonium photoproduction

    hep-ph 2026-07 accept novelty 5.0

    The O(v²) correction to the high-energy-resummed coefficient function for exclusive heavy-quarkonium photoproduction is derived and shown to be small but useful for stabilizing μ_F dependence.

  2. Diffractive vector meson photo-production in oxygen-oxygen and neon-neon ultraperipheral collisions at energies available at the CERN Large Hadron Collider

    hep-ph 2025-09 unverdicted novelty 4.0

    Model predictions for coherent and incoherent rho and J/psi photoproduction cross sections in O-O and Ne-Ne ultraperipheral collisions, comparing Woods-Saxon and cluster-based nuclear shapes.