{"paper":{"title":"CHARM CONTENT OF A PHOTON AND $J/\\psi$ PHOTOPRODUCTION AT HIGH ENERGIES","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"V.A.Saleev","submitted_at":"1995-02-06T08:01:02Z","abstract_excerpt":"A study of the $J/\\psi$-meson production at large transverse momentum in high energy $\\gamma p$ collisions via the charm quark excitation in a photon is presented. Based on perturbative QCD and the nonrelativistic quark model, our calculation demonstrates that the charm content of a photon may be very important for the $J/\\psi$ photoproduction at the large transverse momentum. It is shown that at HERA energies $J/\\psi$ production via the subprocess $cg\\to J/\\si c$ dominates over the resolved photon contribution via the subprocess $gg\\to J/\\psi g$ at $p_{\\bot}>3$ GeV/c and over the direct photo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9502233","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}