{"paper":{"title":"Measurement of an excess in the yield of J/$\\psi$ at very low $p_{\\rm T}$ in Pb-Pb collisions at $\\sqrt{s_{\\rm NN}}$ = 2.76 TeV","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"ALICE Collaboration","submitted_at":"2015-09-29T15:27:27Z","abstract_excerpt":"We report on the first measurement of an excess in the yield of J/$\\psi$ at very low transverse momentum ($p_{\\rm T}< 0.3$ GeV/$c$) in peripheral hadronic Pb-Pb collisions at $\\sqrt{s_{\\rm NN}}$ = 2.76 TeV, performed by ALICE at the CERN LHC. Remarkably, the measured nuclear modification factor of J/$\\psi$ in the rapidity range $2.5<y<4$ reaches about 7 (2) in the $p_{\\rm T}$ range 0-0.3 GeV/$c$ in the 70-90% (50-70%) centrality class. The J/$\\psi$ production cross section associated with the observed excess is obtained under the hypothesis that coherent photoproduction of J/$\\psi$ is the unde"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.08802","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"}