{"paper":{"title":"Photoproduction of the double $J/\\psi$ ($\\Upsilon$) at the LHC with forward proton tagging","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Guo Jian-You, Li Gang, Pan Xue-An, Song Mao, Sun Hao, Zhang Yu","submitted_at":"2018-12-20T14:29:26Z","abstract_excerpt":"We calculate the photoproduction of double $J/\\psi$ ($\\Upsilon$) to leading order based on the nonrelativistic quantum chromodynamics factorization framework at the Large Hadron Collider with forward proton tagging. The numerical results of double $J/\\psi$ photoproduction pp $\\rightarrow$ p$\\gamma$p $\\rightarrow$ $J/\\psi$ + $J/\\psi$ with different forward detector acceptances ($\\xi$) are presented. The total cross section of double $J/\\psi$ photoproduction is less than 200 fb with 0.1 $<$ $\\xi$ $<$ 0.5, but can reach about 1.37(1.27) pb with 0.0015 $<$ $\\xi$ $<$ 0.5 ( 0.0015 $<$ $\\xi$ $<$ 0.15"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.08599","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"}