{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:6CYVEGBS6XGRXPRAWDXSUV3CRU","short_pith_number":"pith:6CYVEGBS","schema_version":"1.0","canonical_sha256":"f0b1521832f5cd1bbe20b0ef2a57628d35eef3e1cd86c41673ecccaed8de82e0","source":{"kind":"arxiv","id":"1307.1653","version":3},"attestation_state":"computed","paper":{"title":"Observation of a narrow baryon resonance with positive strangeness formed in $K^+$Xe collisions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"nucl-ex","authors_text":"A.E. Asratyan, A.G. Dolgolenko, C. Curceanu, C. Guaraldo, DIANA Collaboration: V.V. Barmin, G.K. Tumanov, G.V. Davidenko, I.F. Larin, L.I. Sokolov, M.A. Kubantsev, N.N. Shishov, V.A. Matveev, V.A. Shebanov, V.S. Borisov, V.S. Verebryusov, V.V. Tarasov","submitted_at":"2013-07-05T16:17:27Z","abstract_excerpt":"The charge-exchange reaction K^+ Xe --> K^0 p Xe' is investigated using the data of the DIANA experiment. The distribution of the pK^0 effective mass shows a prominent enhancement near 1538 MeV formed by \\sim 80 events above the background, whose width is consistent with being entirely due to the experimental resolution. Under the selections based on a simulation of K^+Xe collisions, the statistical significance of the signal reaches 5.5\\sigma. We interpret this observation as strong evidence for formation of a pentaquark baryon with positive strangeness, \\Theta^+(uudd\\bar{s}), in the charge-e"},"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":"1307.1653","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2013-07-05T16:17:27Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"0232d38f273fb51abac2dd3998173d4a85ada86f627da9b0beb96fa9735104e0","abstract_canon_sha256":"b08abef17edbb1bbff58b3aa8506fb3f89853a8929cbbe4ba66884bc499bbda8"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:53:56.322418Z","signature_b64":"3ZRuLJbRFuXl1V7bU1I1SLv3TUEGO9EicSmsG3E92pJHAlzl2VQj5CjzmPdbj2WLi1ViKZXKBMyVrTs+eRSuCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f0b1521832f5cd1bbe20b0ef2a57628d35eef3e1cd86c41673ecccaed8de82e0","last_reissued_at":"2026-05-18T02:53:56.321602Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:53:56.321602Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Observation of a narrow baryon resonance with positive strangeness formed in $K^+$Xe collisions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"nucl-ex","authors_text":"A.E. Asratyan, A.G. Dolgolenko, C. Curceanu, C. Guaraldo, DIANA Collaboration: V.V. Barmin, G.K. Tumanov, G.V. Davidenko, I.F. Larin, L.I. Sokolov, M.A. Kubantsev, N.N. Shishov, V.A. Matveev, V.A. Shebanov, V.S. Borisov, V.S. Verebryusov, V.V. Tarasov","submitted_at":"2013-07-05T16:17:27Z","abstract_excerpt":"The charge-exchange reaction K^+ Xe --> K^0 p Xe' is investigated using the data of the DIANA experiment. The distribution of the pK^0 effective mass shows a prominent enhancement near 1538 MeV formed by \\sim 80 events above the background, whose width is consistent with being entirely due to the experimental resolution. Under the selections based on a simulation of K^+Xe collisions, the statistical significance of the signal reaches 5.5\\sigma. We interpret this observation as strong evidence for formation of a pentaquark baryon with positive strangeness, \\Theta^+(uudd\\bar{s}), in the charge-e"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.1653","kind":"arxiv","version":3},"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":"1307.1653","created_at":"2026-05-18T02:53:56.321725+00:00"},{"alias_kind":"arxiv_version","alias_value":"1307.1653v3","created_at":"2026-05-18T02:53:56.321725+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.1653","created_at":"2026-05-18T02:53:56.321725+00:00"},{"alias_kind":"pith_short_12","alias_value":"6CYVEGBS6XGR","created_at":"2026-05-18T12:27:36.564083+00:00"},{"alias_kind":"pith_short_16","alias_value":"6CYVEGBS6XGRXPRA","created_at":"2026-05-18T12:27:36.564083+00:00"},{"alias_kind":"pith_short_8","alias_value":"6CYVEGBS","created_at":"2026-05-18T12:27:36.564083+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/6CYVEGBS6XGRXPRAWDXSUV3CRU","json":"https://pith.science/pith/6CYVEGBS6XGRXPRAWDXSUV3CRU.json","graph_json":"https://pith.science/api/pith-number/6CYVEGBS6XGRXPRAWDXSUV3CRU/graph.json","events_json":"https://pith.science/api/pith-number/6CYVEGBS6XGRXPRAWDXSUV3CRU/events.json","paper":"https://pith.science/paper/6CYVEGBS"},"agent_actions":{"view_html":"https://pith.science/pith/6CYVEGBS6XGRXPRAWDXSUV3CRU","download_json":"https://pith.science/pith/6CYVEGBS6XGRXPRAWDXSUV3CRU.json","view_paper":"https://pith.science/paper/6CYVEGBS","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1307.1653&json=true","fetch_graph":"https://pith.science/api/pith-number/6CYVEGBS6XGRXPRAWDXSUV3CRU/graph.json","fetch_events":"https://pith.science/api/pith-number/6CYVEGBS6XGRXPRAWDXSUV3CRU/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/6CYVEGBS6XGRXPRAWDXSUV3CRU/action/timestamp_anchor","attest_storage":"https://pith.science/pith/6CYVEGBS6XGRXPRAWDXSUV3CRU/action/storage_attestation","attest_author":"https://pith.science/pith/6CYVEGBS6XGRXPRAWDXSUV3CRU/action/author_attestation","sign_citation":"https://pith.science/pith/6CYVEGBS6XGRXPRAWDXSUV3CRU/action/citation_signature","submit_replication":"https://pith.science/pith/6CYVEGBS6XGRXPRAWDXSUV3CRU/action/replication_record"}},"created_at":"2026-05-18T02:53:56.321725+00:00","updated_at":"2026-05-18T02:53:56.321725+00:00"}