{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:LRZBGL3ZE7EOINJMYMZAXJNE4Z","short_pith_number":"pith:LRZBGL3Z","schema_version":"1.0","canonical_sha256":"5c72132f7927c8e4352cc3320ba5a4e67ae99fb187127bdad479b0335c13c2c4","source":{"kind":"arxiv","id":"1208.5917","version":1},"attestation_state":"computed","paper":{"title":"The $\\gamma \\gamma \\to J/\\psi J/\\psi$ reaction and the $J/\\psi J/\\psi$ pair production in exclusive ultraperipheral ultrarelativistic heavy ion collisions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Anna Cisek, Antoni Szczurek, Mariola K{\\l}usek-Gawenda, Sergey Baranov, Wolfgang Sch\\\"afer","submitted_at":"2012-08-29T13:53:52Z","abstract_excerpt":"We calculate the cross section for the $\\gamma \\gamma \\to J/\\psi J/\\psi$ process. Two mechanisms are considered: box (two-loop) diagrams of the order of $O(\\alpha_{em}^2 \\alpha_s^2)$ and two-gluon exchange of the order of $O(\\alpha_{em}^2 \\alpha_s^4)$. The first mechanism is calculated in the heavy-quark non-relativistic approximation while the second case we also include the effects of quantum motion of quarks in the bound state. The box contribution dominates at energies close to the threshold ($W <$ 15 GeV) while the two-gluon mechanism takes over at $W >$ 15 GeV. Including the bound-state "},"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":"1208.5917","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2012-08-29T13:53:52Z","cross_cats_sorted":[],"title_canon_sha256":"9ff2213079c7fe8088d4549f1390648310cac05f20d84c7f7567a6c57391da86","abstract_canon_sha256":"6c1ab619e6874c49af9e0e29b534a73141c2250b0dd3dff57d484faf1b6e231d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:54:50.317910Z","signature_b64":"7HViQ3kIL+gi4sngDa93OTraqIBj265Bt0zliHfLtneXYHkzegrydsN7MxYmJdJzgwo9biZA4TyIceIJ7f2SDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5c72132f7927c8e4352cc3320ba5a4e67ae99fb187127bdad479b0335c13c2c4","last_reissued_at":"2026-05-18T01:54:50.317208Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:54:50.317208Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The $\\gamma \\gamma \\to J/\\psi J/\\psi$ reaction and the $J/\\psi J/\\psi$ pair production in exclusive ultraperipheral ultrarelativistic heavy ion collisions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Anna Cisek, Antoni Szczurek, Mariola K{\\l}usek-Gawenda, Sergey Baranov, Wolfgang Sch\\\"afer","submitted_at":"2012-08-29T13:53:52Z","abstract_excerpt":"We calculate the cross section for the $\\gamma \\gamma \\to J/\\psi J/\\psi$ process. Two mechanisms are considered: box (two-loop) diagrams of the order of $O(\\alpha_{em}^2 \\alpha_s^2)$ and two-gluon exchange of the order of $O(\\alpha_{em}^2 \\alpha_s^4)$. The first mechanism is calculated in the heavy-quark non-relativistic approximation while the second case we also include the effects of quantum motion of quarks in the bound state. The box contribution dominates at energies close to the threshold ($W <$ 15 GeV) while the two-gluon mechanism takes over at $W >$ 15 GeV. Including the bound-state "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.5917","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1208.5917","created_at":"2026-05-18T01:54:50.317331+00:00"},{"alias_kind":"arxiv_version","alias_value":"1208.5917v1","created_at":"2026-05-18T01:54:50.317331+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.5917","created_at":"2026-05-18T01:54:50.317331+00:00"},{"alias_kind":"pith_short_12","alias_value":"LRZBGL3ZE7EO","created_at":"2026-05-18T12:27:14.488303+00:00"},{"alias_kind":"pith_short_16","alias_value":"LRZBGL3ZE7EOINJM","created_at":"2026-05-18T12:27:14.488303+00:00"},{"alias_kind":"pith_short_8","alias_value":"LRZBGL3Z","created_at":"2026-05-18T12:27:14.488303+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2605.22500","citing_title":"Two photon decay width of the fully charmed tetraquarks: revisiting prospects for ultraperipheral collisions","ref_index":18,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/LRZBGL3ZE7EOINJMYMZAXJNE4Z","json":"https://pith.science/pith/LRZBGL3ZE7EOINJMYMZAXJNE4Z.json","graph_json":"https://pith.science/api/pith-number/LRZBGL3ZE7EOINJMYMZAXJNE4Z/graph.json","events_json":"https://pith.science/api/pith-number/LRZBGL3ZE7EOINJMYMZAXJNE4Z/events.json","paper":"https://pith.science/paper/LRZBGL3Z"},"agent_actions":{"view_html":"https://pith.science/pith/LRZBGL3ZE7EOINJMYMZAXJNE4Z","download_json":"https://pith.science/pith/LRZBGL3ZE7EOINJMYMZAXJNE4Z.json","view_paper":"https://pith.science/paper/LRZBGL3Z","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1208.5917&json=true","fetch_graph":"https://pith.science/api/pith-number/LRZBGL3ZE7EOINJMYMZAXJNE4Z/graph.json","fetch_events":"https://pith.science/api/pith-number/LRZBGL3ZE7EOINJMYMZAXJNE4Z/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LRZBGL3ZE7EOINJMYMZAXJNE4Z/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LRZBGL3ZE7EOINJMYMZAXJNE4Z/action/storage_attestation","attest_author":"https://pith.science/pith/LRZBGL3ZE7EOINJMYMZAXJNE4Z/action/author_attestation","sign_citation":"https://pith.science/pith/LRZBGL3ZE7EOINJMYMZAXJNE4Z/action/citation_signature","submit_replication":"https://pith.science/pith/LRZBGL3ZE7EOINJMYMZAXJNE4Z/action/replication_record"}},"created_at":"2026-05-18T01:54:50.317331+00:00","updated_at":"2026-05-18T01:54:50.317331+00:00"}