{"paper":{"title":"Prompt inclusive production of $J/\\psi$, $\\psi'$ and $\\chi_{c}$ mesons at the LHC in forward directions within the NRQCD $k_t$-factorization approach - search for the onset of gluon saturation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Anna Cisek, Antoni Szczurek","submitted_at":"2017-12-21T13:59:21Z","abstract_excerpt":"We discuss prompt production of $J/\\psi$ mesons in proton-proton collisions at the LHC within NRQCD $k_t$-factorization approach using Kimber-Martin-Ryskin (KMR) unintegrated gluon distributions (UGDF). We include both direct color-singlet production ($g g \\to J/\\psi g$) as well as a feed-down from $\\chi_c \\to J/\\psi \\gamma$ and $\\psi' \\to J/\\psi X$ decays. The production of the decaying mesons ($\\chi_c$ or $\\psi'$) is also calculated within NRQCD $k_t$-factorization approach. The corresponding matrix elements for $g g \\to J/\\psi$ g, $g g \\to \\psi'g$ and $g g \\to \\chi_c$ include parameters of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.07943","kind":"arxiv","version":1},"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"}