{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:MKENSYT4ZJIRP54L5BAFD2C2OD","short_pith_number":"pith:MKENSYT4","schema_version":"1.0","canonical_sha256":"6288d9627cca5117f78be84051e85a70fc7d1f5481b2c0aa686616df49326a3a","source":{"kind":"arxiv","id":"1302.3389","version":1},"attestation_state":"computed","paper":{"title":"Scalar mesons and tetraquarks from twisted mass lattice QCD","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-lat","authors_text":"Carsten Urbach, Christian Wiese, Constantia Alexandrou, Jan Oliver Daldrop, Luigi Scorzato, Marc Wagner, Mario Gravina, Mattia Dalla Brida","submitted_at":"2013-02-14T12:46:03Z","abstract_excerpt":"We study light scalar mesons with particular focus on the a_0(980) using lattice QCD with 2+1+1 dynamical quark flavors. To investigate the structure of these scalar mesons and to identify, whether a sizeable tetraquark component is present, we use a large set of operators, including diquark-antidiquark, mesonic molecule and two-meson operators. We find that the low-lying states overlap essentially exclusively with two-meson states. This indicates that in the channels investigated no tightly bound four-quark states of either molecular or diquark-antidiquark type exist."},"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":"1302.3389","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2013-02-14T12:46:03Z","cross_cats_sorted":[],"title_canon_sha256":"39a3b634eb9e45e630aaff0bd2040d1bba6ad6f1558f8ac97ed34322dd11ff2b","abstract_canon_sha256":"926359098c8445e9d9981cec90dca368fc751352cc2699553195ea325dd74f95"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:13:35.878169Z","signature_b64":"2xCZ9XZYFAeDftddLRCNx6nATJ/B8dLtrdzZOKWyvkJSf+uAeGmUadeQLLK4KGVUWyYqSSruEv60S/5vjEcUAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6288d9627cca5117f78be84051e85a70fc7d1f5481b2c0aa686616df49326a3a","last_reissued_at":"2026-05-18T03:13:35.877407Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:13:35.877407Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Scalar mesons and tetraquarks from twisted mass lattice QCD","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-lat","authors_text":"Carsten Urbach, Christian Wiese, Constantia Alexandrou, Jan Oliver Daldrop, Luigi Scorzato, Marc Wagner, Mario Gravina, Mattia Dalla Brida","submitted_at":"2013-02-14T12:46:03Z","abstract_excerpt":"We study light scalar mesons with particular focus on the a_0(980) using lattice QCD with 2+1+1 dynamical quark flavors. To investigate the structure of these scalar mesons and to identify, whether a sizeable tetraquark component is present, we use a large set of operators, including diquark-antidiquark, mesonic molecule and two-meson operators. We find that the low-lying states overlap essentially exclusively with two-meson states. This indicates that in the channels investigated no tightly bound four-quark states of either molecular or diquark-antidiquark type exist."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.3389","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":"1302.3389","created_at":"2026-05-18T03:13:35.877533+00:00"},{"alias_kind":"arxiv_version","alias_value":"1302.3389v1","created_at":"2026-05-18T03:13:35.877533+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.3389","created_at":"2026-05-18T03:13:35.877533+00:00"},{"alias_kind":"pith_short_12","alias_value":"MKENSYT4ZJIR","created_at":"2026-05-18T12:27:52.871228+00:00"},{"alias_kind":"pith_short_16","alias_value":"MKENSYT4ZJIRP54L","created_at":"2026-05-18T12:27:52.871228+00:00"},{"alias_kind":"pith_short_8","alias_value":"MKENSYT4","created_at":"2026-05-18T12:27:52.871228+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/MKENSYT4ZJIRP54L5BAFD2C2OD","json":"https://pith.science/pith/MKENSYT4ZJIRP54L5BAFD2C2OD.json","graph_json":"https://pith.science/api/pith-number/MKENSYT4ZJIRP54L5BAFD2C2OD/graph.json","events_json":"https://pith.science/api/pith-number/MKENSYT4ZJIRP54L5BAFD2C2OD/events.json","paper":"https://pith.science/paper/MKENSYT4"},"agent_actions":{"view_html":"https://pith.science/pith/MKENSYT4ZJIRP54L5BAFD2C2OD","download_json":"https://pith.science/pith/MKENSYT4ZJIRP54L5BAFD2C2OD.json","view_paper":"https://pith.science/paper/MKENSYT4","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1302.3389&json=true","fetch_graph":"https://pith.science/api/pith-number/MKENSYT4ZJIRP54L5BAFD2C2OD/graph.json","fetch_events":"https://pith.science/api/pith-number/MKENSYT4ZJIRP54L5BAFD2C2OD/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/MKENSYT4ZJIRP54L5BAFD2C2OD/action/timestamp_anchor","attest_storage":"https://pith.science/pith/MKENSYT4ZJIRP54L5BAFD2C2OD/action/storage_attestation","attest_author":"https://pith.science/pith/MKENSYT4ZJIRP54L5BAFD2C2OD/action/author_attestation","sign_citation":"https://pith.science/pith/MKENSYT4ZJIRP54L5BAFD2C2OD/action/citation_signature","submit_replication":"https://pith.science/pith/MKENSYT4ZJIRP54L5BAFD2C2OD/action/replication_record"}},"created_at":"2026-05-18T03:13:35.877533+00:00","updated_at":"2026-05-18T03:13:35.877533+00:00"}