{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:XGJFAINXWDW6ADE4JUK7Q43IR5","short_pith_number":"pith:XGJFAINX","schema_version":"1.0","canonical_sha256":"b9925021b7b0ede00c9c4d15f873688f74ebf0f1b3dd84c1bcd6cf88dd572c34","source":{"kind":"arxiv","id":"1209.6216","version":1},"attestation_state":"computed","paper":{"title":"Search for a bound state of kaon and pion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"hep-ex","authors_text":"A. Sakaguchi, F. Khanam, H. Noumi, H. Takahashi, K. Matsuoka, K. Terai, M. Sekimoto, S. Ajimura, S. Minami, T. Fukuda, T. Hayakawa, T. Itabashi, T. Kishimoto, T. Sato, W. Imoto, Y. Mitoma, Y. Mizoi, Y. Shimizu","submitted_at":"2012-09-27T13:15:33Z","abstract_excerpt":"We have searched for a bound state of kaon and pion denoted by $X$. The $X$ was conjectured to explain the so-called $\\Theta^+$ resonance as a bound state of kaon, pion and nucleon. This model explains almost all properties of the $\\Theta^+$, however, the model works only if the $K \\pi$ interaction is strongly attractive. It is so strong that it could make a bound state $X$. Here we report a result of the search for the $X$ by using the $K^+ + N \\rightarrow X^+ + N$ reaction at P$_K\\sim$ 1.2 GeV/c. The $X^+ \\rightarrow K^+ \\gamma \\gamma$ decay produces $K^+$ in momentum region where other proc"},"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":"1209.6216","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2012-09-27T13:15:33Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"43dbe8ac5d59b7a138af9c6f3999c238a07d36e74834bd387f281a1a0f2abefe","abstract_canon_sha256":"4c10ed99f7d146fa1c45001f5774a93f30d2c8dd6634a7605f2d031bf3079c5f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:44:34.995275Z","signature_b64":"JvgH258CAv1AI3/9xOpTT91orzyCrsFUS+ewZhxEui8TT5fwQXGf5PQ9po+frh0RLYKO1wn8ZLP5lSgoG2U9Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b9925021b7b0ede00c9c4d15f873688f74ebf0f1b3dd84c1bcd6cf88dd572c34","last_reissued_at":"2026-05-18T03:44:34.994691Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:44:34.994691Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Search for a bound state of kaon and pion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"hep-ex","authors_text":"A. Sakaguchi, F. Khanam, H. Noumi, H. Takahashi, K. Matsuoka, K. Terai, M. Sekimoto, S. Ajimura, S. Minami, T. Fukuda, T. Hayakawa, T. Itabashi, T. Kishimoto, T. Sato, W. Imoto, Y. Mitoma, Y. Mizoi, Y. Shimizu","submitted_at":"2012-09-27T13:15:33Z","abstract_excerpt":"We have searched for a bound state of kaon and pion denoted by $X$. The $X$ was conjectured to explain the so-called $\\Theta^+$ resonance as a bound state of kaon, pion and nucleon. This model explains almost all properties of the $\\Theta^+$, however, the model works only if the $K \\pi$ interaction is strongly attractive. It is so strong that it could make a bound state $X$. Here we report a result of the search for the $X$ by using the $K^+ + N \\rightarrow X^+ + N$ reaction at P$_K\\sim$ 1.2 GeV/c. The $X^+ \\rightarrow K^+ \\gamma \\gamma$ decay produces $K^+$ in momentum region where other proc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.6216","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":"1209.6216","created_at":"2026-05-18T03:44:34.994784+00:00"},{"alias_kind":"arxiv_version","alias_value":"1209.6216v1","created_at":"2026-05-18T03:44:34.994784+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.6216","created_at":"2026-05-18T03:44:34.994784+00:00"},{"alias_kind":"pith_short_12","alias_value":"XGJFAINXWDW6","created_at":"2026-05-18T12:27:27.928770+00:00"},{"alias_kind":"pith_short_16","alias_value":"XGJFAINXWDW6ADE4","created_at":"2026-05-18T12:27:27.928770+00:00"},{"alias_kind":"pith_short_8","alias_value":"XGJFAINX","created_at":"2026-05-18T12:27:27.928770+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/XGJFAINXWDW6ADE4JUK7Q43IR5","json":"https://pith.science/pith/XGJFAINXWDW6ADE4JUK7Q43IR5.json","graph_json":"https://pith.science/api/pith-number/XGJFAINXWDW6ADE4JUK7Q43IR5/graph.json","events_json":"https://pith.science/api/pith-number/XGJFAINXWDW6ADE4JUK7Q43IR5/events.json","paper":"https://pith.science/paper/XGJFAINX"},"agent_actions":{"view_html":"https://pith.science/pith/XGJFAINXWDW6ADE4JUK7Q43IR5","download_json":"https://pith.science/pith/XGJFAINXWDW6ADE4JUK7Q43IR5.json","view_paper":"https://pith.science/paper/XGJFAINX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1209.6216&json=true","fetch_graph":"https://pith.science/api/pith-number/XGJFAINXWDW6ADE4JUK7Q43IR5/graph.json","fetch_events":"https://pith.science/api/pith-number/XGJFAINXWDW6ADE4JUK7Q43IR5/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/XGJFAINXWDW6ADE4JUK7Q43IR5/action/timestamp_anchor","attest_storage":"https://pith.science/pith/XGJFAINXWDW6ADE4JUK7Q43IR5/action/storage_attestation","attest_author":"https://pith.science/pith/XGJFAINXWDW6ADE4JUK7Q43IR5/action/author_attestation","sign_citation":"https://pith.science/pith/XGJFAINXWDW6ADE4JUK7Q43IR5/action/citation_signature","submit_replication":"https://pith.science/pith/XGJFAINXWDW6ADE4JUK7Q43IR5/action/replication_record"}},"created_at":"2026-05-18T03:44:34.994784+00:00","updated_at":"2026-05-18T03:44:34.994784+00:00"}