{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:C5325Q5GHR4GQ235QU5FGL4XIS","short_pith_number":"pith:C5325Q5G","canonical_record":{"source":{"id":"1803.06883","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-03-19T12:04:58Z","cross_cats_sorted":[],"title_canon_sha256":"433dd7612112241eb2dec587a8845aeb63c3d2f1db76aa1026dac332cd1669e1","abstract_canon_sha256":"fdb11228669fadb5e6eac252389eb83e041fd8925695fb7dddad0c336538fff0"},"schema_version":"1.0"},"canonical_sha256":"1777aec3a63c78686b7d853a532f9744bfa4b4f4296a42897b1b7f89844eb6f0","source":{"kind":"arxiv","id":"1803.06883","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.06883","created_at":"2026-05-18T00:04:17Z"},{"alias_kind":"arxiv_version","alias_value":"1803.06883v2","created_at":"2026-05-18T00:04:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.06883","created_at":"2026-05-18T00:04:17Z"},{"alias_kind":"pith_short_12","alias_value":"C5325Q5GHR4G","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_16","alias_value":"C5325Q5GHR4GQ235","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_8","alias_value":"C5325Q5G","created_at":"2026-05-18T12:32:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:C5325Q5GHR4GQ235QU5FGL4XIS","target":"record","payload":{"canonical_record":{"source":{"id":"1803.06883","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-03-19T12:04:58Z","cross_cats_sorted":[],"title_canon_sha256":"433dd7612112241eb2dec587a8845aeb63c3d2f1db76aa1026dac332cd1669e1","abstract_canon_sha256":"fdb11228669fadb5e6eac252389eb83e041fd8925695fb7dddad0c336538fff0"},"schema_version":"1.0"},"canonical_sha256":"1777aec3a63c78686b7d853a532f9744bfa4b4f4296a42897b1b7f89844eb6f0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:04:17.521744Z","signature_b64":"asW2TVkX9/NRvy3MZ9MKq0EIkbD+AyJbGHA2QWutytfY6WFloDDVnbwa08TdN9QH7qhpsOFCm6ukwb9xHypyBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1777aec3a63c78686b7d853a532f9744bfa4b4f4296a42897b1b7f89844eb6f0","last_reissued_at":"2026-05-18T00:04:17.521027Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:04:17.521027Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.06883","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:04:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X6pBLNXOPa2vZK+qAXQ+2SzQJ3mV3//P0sZ6S0gZdOh04hVqaHh+PEyK54ZE7hIs5YB1dnScSM8tIgqfnsUdDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T10:39:05.578136Z"},"content_sha256":"20aea47166dbeddd8013c6b8ed081302deff01dbff316407ea15db53640b2f9c","schema_version":"1.0","event_id":"sha256:20aea47166dbeddd8013c6b8ed081302deff01dbff316407ea15db53640b2f9c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:C5325Q5GHR4GQ235QU5FGL4XIS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tetraquarks in the 1/N Expansion: a New Appraisal","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Antonio D. Polosa, Luciano Maiani, Veronica Riquer","submitted_at":"2018-03-19T12:04:58Z","abstract_excerpt":"We discuss the necessary, albeit not sufficient, conditions for tetraquark poles to occur in the 1/N expansion of QCD and find the minimum order at which such poles may appear. Assuming tetraquark poles, we find a new non-planar solution with the minimal number of topologies and tetraquark species. The solution implies narrow states. Mixing with quarkonium states is allowed so that P-wave tetraquarks with J^PC=1^-- would couple to e^+e^-."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.06883","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:04:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2DiH2NK1JbpTFoQjFJzCE+Qw1wM3JB7qePbRjKje3Jc4rQjRhelvhmeCLmS3aqzzAZ+KIpXaRoLvVX8ueLdSAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T10:39:05.578492Z"},"content_sha256":"c4aae5b8e3f918c88b7bbacaf52a4da357accb15c60fd10d2ec5387dfcc5bac0","schema_version":"1.0","event_id":"sha256:c4aae5b8e3f918c88b7bbacaf52a4da357accb15c60fd10d2ec5387dfcc5bac0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C5325Q5GHR4GQ235QU5FGL4XIS/bundle.json","state_url":"https://pith.science/pith/C5325Q5GHR4GQ235QU5FGL4XIS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C5325Q5GHR4GQ235QU5FGL4XIS/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-03T10:39:05Z","links":{"resolver":"https://pith.science/pith/C5325Q5GHR4GQ235QU5FGL4XIS","bundle":"https://pith.science/pith/C5325Q5GHR4GQ235QU5FGL4XIS/bundle.json","state":"https://pith.science/pith/C5325Q5GHR4GQ235QU5FGL4XIS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C5325Q5GHR4GQ235QU5FGL4XIS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:C5325Q5GHR4GQ235QU5FGL4XIS","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"fdb11228669fadb5e6eac252389eb83e041fd8925695fb7dddad0c336538fff0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-03-19T12:04:58Z","title_canon_sha256":"433dd7612112241eb2dec587a8845aeb63c3d2f1db76aa1026dac332cd1669e1"},"schema_version":"1.0","source":{"id":"1803.06883","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.06883","created_at":"2026-05-18T00:04:17Z"},{"alias_kind":"arxiv_version","alias_value":"1803.06883v2","created_at":"2026-05-18T00:04:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.06883","created_at":"2026-05-18T00:04:17Z"},{"alias_kind":"pith_short_12","alias_value":"C5325Q5GHR4G","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_16","alias_value":"C5325Q5GHR4GQ235","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_8","alias_value":"C5325Q5G","created_at":"2026-05-18T12:32:16Z"}],"graph_snapshots":[{"event_id":"sha256:c4aae5b8e3f918c88b7bbacaf52a4da357accb15c60fd10d2ec5387dfcc5bac0","target":"graph","created_at":"2026-05-18T00:04:17Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We discuss the necessary, albeit not sufficient, conditions for tetraquark poles to occur in the 1/N expansion of QCD and find the minimum order at which such poles may appear. Assuming tetraquark poles, we find a new non-planar solution with the minimal number of topologies and tetraquark species. The solution implies narrow states. Mixing with quarkonium states is allowed so that P-wave tetraquarks with J^PC=1^-- would couple to e^+e^-.","authors_text":"Antonio D. Polosa, Luciano Maiani, Veronica Riquer","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-03-19T12:04:58Z","title":"Tetraquarks in the 1/N Expansion: a New Appraisal"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.06883","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:20aea47166dbeddd8013c6b8ed081302deff01dbff316407ea15db53640b2f9c","target":"record","created_at":"2026-05-18T00:04:17Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"fdb11228669fadb5e6eac252389eb83e041fd8925695fb7dddad0c336538fff0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-03-19T12:04:58Z","title_canon_sha256":"433dd7612112241eb2dec587a8845aeb63c3d2f1db76aa1026dac332cd1669e1"},"schema_version":"1.0","source":{"id":"1803.06883","kind":"arxiv","version":2}},"canonical_sha256":"1777aec3a63c78686b7d853a532f9744bfa4b4f4296a42897b1b7f89844eb6f0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1777aec3a63c78686b7d853a532f9744bfa4b4f4296a42897b1b7f89844eb6f0","first_computed_at":"2026-05-18T00:04:17.521027Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:04:17.521027Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"asW2TVkX9/NRvy3MZ9MKq0EIkbD+AyJbGHA2QWutytfY6WFloDDVnbwa08TdN9QH7qhpsOFCm6ukwb9xHypyBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:04:17.521744Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.06883","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:20aea47166dbeddd8013c6b8ed081302deff01dbff316407ea15db53640b2f9c","sha256:c4aae5b8e3f918c88b7bbacaf52a4da357accb15c60fd10d2ec5387dfcc5bac0"],"state_sha256":"df6518a53a03f73c25cc627bf1c66230a479b53aa3f77dec373b05082ed47a6c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bl+x5pX4Q+bLMY9ed49NrookvNvkC9YpHSz7vXUKhUDo9od9LzDUKai7h2YozzDLYPJRICe9HrN/ZHOp2rgZAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T10:39:05.580528Z","bundle_sha256":"0c007bf24f5e53c6a1d091710b983d962eac3120dc9e9b9a8a4240bd9a89f444"}}