{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:4FEQXJFWZHKQQZKJPVM2DF4I4D","short_pith_number":"pith:4FEQXJFW","schema_version":"1.0","canonical_sha256":"e1490ba4b6c9d50865497d59a19788e0c1f6e810edddd110317f274cea9af627","source":{"kind":"arxiv","id":"1312.6486","version":2},"attestation_state":"computed","paper":{"title":"Disentangling coherent and incoherent quasielastic $J/\\psi$ photoproduction on nuclei by neutron tagging in ultraperipheral ion collisions at the LHC","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Gatchina), M. Strikman (Penn State U.), M. Zhalov (PNPI, V. Guzey (PNPI","submitted_at":"2013-12-23T08:56:23Z","abstract_excerpt":"We consider $J/\\psi$ photoproduction in ion--ion ultraperipheral collisions (UPCs) at the LHC and RHIC in the coherent and incoherent quasielastic channels with and without accompanying forward neutron emission and analyze the role of nuclear gluon shadowing at small $x$, $x=10^{-4}-10^{-2}$, in these processes. We find that despite the good agreement between large nuclear gluon shadowing and the ALICE data in the coherent channel, in the incoherent channel, the leading twist approximation predicts the amount of nuclear suppression which is by approximately a factor of $1.5$ exceeds that seen "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1312.6486","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2013-12-23T08:56:23Z","cross_cats_sorted":[],"title_canon_sha256":"f8ed006a40bf60ff78f045396fa5ddfeb9b0e5b98117832a58386ffe40e89ad7","abstract_canon_sha256":"6225e34220f1992da3ac86b7474ffa394eeb581db1d757e11fd3f022c78843a1"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:45:42.569371Z","signature_b64":"7cP0AfmU37iOU55U2s1wb5+VUyUcAJgVDbk47K4yVBBsCPYzzM8fwgcqpTj9JuGNjJH4c/3JZaQEk3K/x+uECg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e1490ba4b6c9d50865497d59a19788e0c1f6e810edddd110317f274cea9af627","last_reissued_at":"2026-05-18T01:45:42.568580Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:45:42.568580Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Disentangling coherent and incoherent quasielastic $J/\\psi$ photoproduction on nuclei by neutron tagging in ultraperipheral ion collisions at the LHC","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Gatchina), M. Strikman (Penn State U.), M. Zhalov (PNPI, V. Guzey (PNPI","submitted_at":"2013-12-23T08:56:23Z","abstract_excerpt":"We consider $J/\\psi$ photoproduction in ion--ion ultraperipheral collisions (UPCs) at the LHC and RHIC in the coherent and incoherent quasielastic channels with and without accompanying forward neutron emission and analyze the role of nuclear gluon shadowing at small $x$, $x=10^{-4}-10^{-2}$, in these processes. We find that despite the good agreement between large nuclear gluon shadowing and the ALICE data in the coherent channel, in the incoherent channel, the leading twist approximation predicts the amount of nuclear suppression which is by approximately a factor of $1.5$ exceeds that seen "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.6486","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1312.6486","created_at":"2026-05-18T01:45:42.568696+00:00"},{"alias_kind":"arxiv_version","alias_value":"1312.6486v2","created_at":"2026-05-18T01:45:42.568696+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.6486","created_at":"2026-05-18T01:45:42.568696+00:00"},{"alias_kind":"pith_short_12","alias_value":"4FEQXJFWZHKQ","created_at":"2026-05-18T12:27:34.582898+00:00"},{"alias_kind":"pith_short_16","alias_value":"4FEQXJFWZHKQQZKJ","created_at":"2026-05-18T12:27:34.582898+00:00"},{"alias_kind":"pith_short_8","alias_value":"4FEQXJFW","created_at":"2026-05-18T12:27:34.582898+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":2,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2604.24435","citing_title":"Measurement of jet photoproduction in ultra-peripheral Pb+Pb collisions without nuclear breakup at $\\sqrt{s_\\mathrm{NN}} = 5.02$ TeV with the ATLAS detector","ref_index":31,"is_internal_anchor":false},{"citing_arxiv_id":"2604.20559","citing_title":"Observation of impact parameter dependent modifications of nuclear parton distributions in photonuclear Pb+Pb collisions at $\\sqrt{s_\\mathrm{NN}} = 5.02$ TeV with the ATLAS detector","ref_index":31,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/4FEQXJFWZHKQQZKJPVM2DF4I4D","json":"https://pith.science/pith/4FEQXJFWZHKQQZKJPVM2DF4I4D.json","graph_json":"https://pith.science/api/pith-number/4FEQXJFWZHKQQZKJPVM2DF4I4D/graph.json","events_json":"https://pith.science/api/pith-number/4FEQXJFWZHKQQZKJPVM2DF4I4D/events.json","paper":"https://pith.science/paper/4FEQXJFW"},"agent_actions":{"view_html":"https://pith.science/pith/4FEQXJFWZHKQQZKJPVM2DF4I4D","download_json":"https://pith.science/pith/4FEQXJFWZHKQQZKJPVM2DF4I4D.json","view_paper":"https://pith.science/paper/4FEQXJFW","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1312.6486&json=true","fetch_graph":"https://pith.science/api/pith-number/4FEQXJFWZHKQQZKJPVM2DF4I4D/graph.json","fetch_events":"https://pith.science/api/pith-number/4FEQXJFWZHKQQZKJPVM2DF4I4D/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4FEQXJFWZHKQQZKJPVM2DF4I4D/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4FEQXJFWZHKQQZKJPVM2DF4I4D/action/storage_attestation","attest_author":"https://pith.science/pith/4FEQXJFWZHKQQZKJPVM2DF4I4D/action/author_attestation","sign_citation":"https://pith.science/pith/4FEQXJFWZHKQQZKJPVM2DF4I4D/action/citation_signature","submit_replication":"https://pith.science/pith/4FEQXJFWZHKQQZKJPVM2DF4I4D/action/replication_record"}},"created_at":"2026-05-18T01:45:42.568696+00:00","updated_at":"2026-05-18T01:45:42.568696+00:00"}