{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:XGJFAINXWDW6ADE4JUK7Q43IR5","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":"4c10ed99f7d146fa1c45001f5774a93f30d2c8dd6634a7605f2d031bf3079c5f","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2012-09-27T13:15:33Z","title_canon_sha256":"43dbe8ac5d59b7a138af9c6f3999c238a07d36e74834bd387f281a1a0f2abefe"},"schema_version":"1.0","source":{"id":"1209.6216","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.6216","created_at":"2026-05-18T03:44:34Z"},{"alias_kind":"arxiv_version","alias_value":"1209.6216v1","created_at":"2026-05-18T03:44:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.6216","created_at":"2026-05-18T03:44:34Z"},{"alias_kind":"pith_short_12","alias_value":"XGJFAINXWDW6","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"XGJFAINXWDW6ADE4","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"XGJFAINX","created_at":"2026-05-18T12:27:27Z"}],"graph_snapshots":[{"event_id":"sha256:db5e11346400c15ce55ef2ec76914513f76be662ce7825009087de8f81e24935","target":"graph","created_at":"2026-05-18T03:44:34Z","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 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","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","cross_cats":["nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2012-09-27T13:15:33Z","title":"Search for a bound state of kaon and pion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.6216","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":"sha256:32dc62ae85f417cf6344158f390031c82f913941e7f26307496d19f822b8e622","target":"record","created_at":"2026-05-18T03:44:34Z","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":"4c10ed99f7d146fa1c45001f5774a93f30d2c8dd6634a7605f2d031bf3079c5f","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2012-09-27T13:15:33Z","title_canon_sha256":"43dbe8ac5d59b7a138af9c6f3999c238a07d36e74834bd387f281a1a0f2abefe"},"schema_version":"1.0","source":{"id":"1209.6216","kind":"arxiv","version":1}},"canonical_sha256":"b9925021b7b0ede00c9c4d15f873688f74ebf0f1b3dd84c1bcd6cf88dd572c34","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b9925021b7b0ede00c9c4d15f873688f74ebf0f1b3dd84c1bcd6cf88dd572c34","first_computed_at":"2026-05-18T03:44:34.994691Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:44:34.994691Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JvgH258CAv1AI3/9xOpTT91orzyCrsFUS+ewZhxEui8TT5fwQXGf5PQ9po+frh0RLYKO1wn8ZLP5lSgoG2U9Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:44:34.995275Z","signed_message":"canonical_sha256_bytes"},"source_id":"1209.6216","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:32dc62ae85f417cf6344158f390031c82f913941e7f26307496d19f822b8e622","sha256:db5e11346400c15ce55ef2ec76914513f76be662ce7825009087de8f81e24935"],"state_sha256":"b1b430c6bfd64787b372542a03cfea2414a1d2eb9f4b8d2b9c2eca0596227c1f"}