{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:GO35RSUS6JMK2M3GMC7MM4J3MT","short_pith_number":"pith:GO35RSUS","canonical_record":{"source":{"id":"1512.04497","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-12-14T20:03:16Z","cross_cats_sorted":[],"title_canon_sha256":"693a3c5dc1715cd97f39ce03e972fa20c6f609ec3212671dbc757009602f85ef","abstract_canon_sha256":"d1e1d276c5adb3e3cc612a4c0542a947c594166d49bff5782c15e5ce7c8fad4e"},"schema_version":"1.0"},"canonical_sha256":"33b7d8ca92f258ad336660bec6713b64dba8ad05e608810ec7747039e1369dd4","source":{"kind":"arxiv","id":"1512.04497","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.04497","created_at":"2026-05-18T01:16:44Z"},{"alias_kind":"arxiv_version","alias_value":"1512.04497v1","created_at":"2026-05-18T01:16:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.04497","created_at":"2026-05-18T01:16:44Z"},{"alias_kind":"pith_short_12","alias_value":"GO35RSUS6JMK","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"GO35RSUS6JMK2M3G","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"GO35RSUS","created_at":"2026-05-18T12:29:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:GO35RSUS6JMK2M3GMC7MM4J3MT","target":"record","payload":{"canonical_record":{"source":{"id":"1512.04497","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-12-14T20:03:16Z","cross_cats_sorted":[],"title_canon_sha256":"693a3c5dc1715cd97f39ce03e972fa20c6f609ec3212671dbc757009602f85ef","abstract_canon_sha256":"d1e1d276c5adb3e3cc612a4c0542a947c594166d49bff5782c15e5ce7c8fad4e"},"schema_version":"1.0"},"canonical_sha256":"33b7d8ca92f258ad336660bec6713b64dba8ad05e608810ec7747039e1369dd4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:16:44.654098Z","signature_b64":"GGwkdBsI6sW4794VV84cludXH42wr9yjSzmNrWvYdP/e0QDNMQ+kPlNMzAIYYWeEXLRpR/lQK3ko+r7aYwQFDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"33b7d8ca92f258ad336660bec6713b64dba8ad05e608810ec7747039e1369dd4","last_reissued_at":"2026-05-18T01:16:44.653614Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:16:44.653614Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1512.04497","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:16:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8TmEyoxkxwSDJWiJV/R2Yn+KjrFd9zLX/AWgT+i7zWSWgyKk0BIKWM4Eax5KoYTOZTy2ihckUHwC2P1dm6LoAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T12:41:49.315868Z"},"content_sha256":"07cd783fc8c3014904e8235c6b8324c4968515cdbc997567d7410400e5eda864","schema_version":"1.0","event_id":"sha256:07cd783fc8c3014904e8235c6b8324c4968515cdbc997567d7410400e5eda864"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:GO35RSUS6JMK2M3GMC7MM4J3MT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Towards a Theoretical Understanding of the XYZ Mesons from QCD","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Eric Braaten","submitted_at":"2015-12-14T20:03:16Z","abstract_excerpt":"The XYZ mesons are mesons that contain a heavy quark and antiquark but have properties that seem to require additional constituents. Some of them are electrically charged, so they must be tetraquark mesons whose additional constituents are a light quark and antiquark. The list of XYZ mesons has grown to about two dozen over the last decade. A promising approach to understanding these mesons within QCD is the Born-Oppenheimer approximation, which reduces the problem to the solution of the Schrodinger equation in potentials that can be calculated using lattice QCD. The Born-Oppenheimer approxima"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.04497","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:16:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TRujtNbINuVrIRVscT9thyvnnr6L0eEWUMnHidtMwDh7FnV4ZIJYpeFKrPd5qayP+cv5lrxagMGuZq2YC0i1AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T12:41:49.316299Z"},"content_sha256":"6669f97549d04d0a7de8142a24a48a446c6ecf4a853c9f2dfab5f8438a024f4f","schema_version":"1.0","event_id":"sha256:6669f97549d04d0a7de8142a24a48a446c6ecf4a853c9f2dfab5f8438a024f4f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GO35RSUS6JMK2M3GMC7MM4J3MT/bundle.json","state_url":"https://pith.science/pith/GO35RSUS6JMK2M3GMC7MM4J3MT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GO35RSUS6JMK2M3GMC7MM4J3MT/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":"2026-05-26T12:41:49Z","links":{"resolver":"https://pith.science/pith/GO35RSUS6JMK2M3GMC7MM4J3MT","bundle":"https://pith.science/pith/GO35RSUS6JMK2M3GMC7MM4J3MT/bundle.json","state":"https://pith.science/pith/GO35RSUS6JMK2M3GMC7MM4J3MT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GO35RSUS6JMK2M3GMC7MM4J3MT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:GO35RSUS6JMK2M3GMC7MM4J3MT","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":"d1e1d276c5adb3e3cc612a4c0542a947c594166d49bff5782c15e5ce7c8fad4e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-12-14T20:03:16Z","title_canon_sha256":"693a3c5dc1715cd97f39ce03e972fa20c6f609ec3212671dbc757009602f85ef"},"schema_version":"1.0","source":{"id":"1512.04497","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.04497","created_at":"2026-05-18T01:16:44Z"},{"alias_kind":"arxiv_version","alias_value":"1512.04497v1","created_at":"2026-05-18T01:16:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.04497","created_at":"2026-05-18T01:16:44Z"},{"alias_kind":"pith_short_12","alias_value":"GO35RSUS6JMK","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"GO35RSUS6JMK2M3G","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"GO35RSUS","created_at":"2026-05-18T12:29:22Z"}],"graph_snapshots":[{"event_id":"sha256:6669f97549d04d0a7de8142a24a48a446c6ecf4a853c9f2dfab5f8438a024f4f","target":"graph","created_at":"2026-05-18T01:16:44Z","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":"The XYZ mesons are mesons that contain a heavy quark and antiquark but have properties that seem to require additional constituents. Some of them are electrically charged, so they must be tetraquark mesons whose additional constituents are a light quark and antiquark. The list of XYZ mesons has grown to about two dozen over the last decade. A promising approach to understanding these mesons within QCD is the Born-Oppenheimer approximation, which reduces the problem to the solution of the Schrodinger equation in potentials that can be calculated using lattice QCD. The Born-Oppenheimer approxima","authors_text":"Eric Braaten","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-12-14T20:03:16Z","title":"Towards a Theoretical Understanding of the XYZ Mesons from QCD"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.04497","kind":"arxiv","version":1},"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":"sha256:07cd783fc8c3014904e8235c6b8324c4968515cdbc997567d7410400e5eda864","target":"record","created_at":"2026-05-18T01:16:44Z","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":"d1e1d276c5adb3e3cc612a4c0542a947c594166d49bff5782c15e5ce7c8fad4e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-12-14T20:03:16Z","title_canon_sha256":"693a3c5dc1715cd97f39ce03e972fa20c6f609ec3212671dbc757009602f85ef"},"schema_version":"1.0","source":{"id":"1512.04497","kind":"arxiv","version":1}},"canonical_sha256":"33b7d8ca92f258ad336660bec6713b64dba8ad05e608810ec7747039e1369dd4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"33b7d8ca92f258ad336660bec6713b64dba8ad05e608810ec7747039e1369dd4","first_computed_at":"2026-05-18T01:16:44.653614Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:16:44.653614Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GGwkdBsI6sW4794VV84cludXH42wr9yjSzmNrWvYdP/e0QDNMQ+kPlNMzAIYYWeEXLRpR/lQK3ko+r7aYwQFDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:16:44.654098Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.04497","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:07cd783fc8c3014904e8235c6b8324c4968515cdbc997567d7410400e5eda864","sha256:6669f97549d04d0a7de8142a24a48a446c6ecf4a853c9f2dfab5f8438a024f4f"],"state_sha256":"ffaca16ef079f93be50227de70e0e606beb6e001afd807310f47e34cc3571abf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mo4h2rHQYuby91QG6vHFh2UynsGBReeCY5mnI2dC2HToOd79vEuygC2r9hJrMuRFx2qEIcqPtA8fsZ106s/pDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T12:41:49.320162Z","bundle_sha256":"2c80f5efcc17483ffe0dc0f6968881253a18955bb6e5dfb6de42db5da0d8550a"}}