{"arxiv_id":"2610.29297","title":"Prompt charmonia hadroproduction in High Energy Factorization with tree-level NLO corrections","abstract":"We consider prompt $J/\\psi$, $\\chi_{cJ}$ and $\\eta_c$ 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 $\\sigma(\\psi^\\prime)/\\sigma(J/\\psi)$ and $\\sigma(\\chi_{cJ})/\\sigma(J/\\psi)$ 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.","primary_cat":"hep-ph","cross_cats":[],"submitted_at":"2026-10-21T06:49:37+00:00","latest_version":1,"source":"arxiv","source_label":"arXiv","source_url":null,"has_pdf":true,"has_source":false,"verdict":"CONDITIONAL","confidence":"MODERATE","one_line_summary":"Adding tree-level NLO corrections to high-energy factorization improves the simultaneous description of J/psi, psi-prime and chi_c production at the LHC, while parameter-free eta_c predictions still overshoot the data.","novelty_score":5.0,"correctness_risk":"medium","formal_verification":"none","upvotes":0,"downvotes":0,"pith_score":0,"inbound_count":0,"_links":{"html":"https://pith.science/paper/2610.29297","verdict":"/api/v1/verdicts/2610.29297"}}