{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:HL6YBKIVNEUD77PO2MTQTASJDB","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":"d0863fc2043b6ec4a7334cf810fbd2e08e8a7b2e9af999488c90f180f8511bd5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2014-12-23T10:59:08Z","title_canon_sha256":"0c4bd4b67b455a588fcd084072ed3934d6edbbd7fd4975933ed1c42a08720bb0"},"schema_version":"1.0","source":{"id":"1412.7317","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.7317","created_at":"2026-05-18T02:17:51Z"},{"alias_kind":"arxiv_version","alias_value":"1412.7317v2","created_at":"2026-05-18T02:17:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.7317","created_at":"2026-05-18T02:17:51Z"},{"alias_kind":"pith_short_12","alias_value":"HL6YBKIVNEUD","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_16","alias_value":"HL6YBKIVNEUD77PO","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_8","alias_value":"HL6YBKIV","created_at":"2026-05-18T12:28:30Z"}],"graph_snapshots":[{"event_id":"sha256:cc9d7c0fb2b8abda26039ea6f593ab02f4ba10192338116d79b5b315bb65316d","target":"graph","created_at":"2026-05-18T02:17:51Z","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 earlier search at HERMES for narrow baryon states excited in quasi-real photoproduction, decaying through the channel $pK_S^0\\rightarrow p\\pi^+\\pi^-$, has been extended with improved decay-particle reconstruction, more advanced particle identification, and increased event samples. The structure observed earlier at an invariant mass of 1528 MeV shifts to 1522 MeV and the statistical significance drops to about 2$\\sigma$ for data taken with a deuterium target. The number of events above background is $68_{-31}^{+98}\\text{(stat)}\\pm13\\text{(sys)}$. No such structure is observed in the hydroge","authors_text":"A. Avetissian, A. Borissov, A. Fantoni, A. Ivanilov, A. Kisselev, A. L\\'opez Ruiz, A. Martinez de la Ossa, A. Movsisyan, A. Nass, A. Petrosyan, A. Rostomyan, A.R. Reolon, A. Terkulov, A. Trzcinski, B. Marianski, B.-Q. Ma, B. Seitz, B. Zihlmann, C.A. Miller, C. Riedl, C. Van Hulse, D. Gabbert, D. Hasch, D. Mahon, D. Ryckbosch, D. Veretennikov, E. Avetisyan, E. Cisbani, E. De Sanctis, E. Etzelm\\\"uller, E. Kinney, E. Nappi, F. Garibaldi, F. Giordano, G. Ciullo, G. Elbakian, G. Gavrilov, G. Karyan, G.P. Capitani, G. Rosner, G. Schnell, H.E. Jackson, H. Marukyan, H.P. Blok, H. Ye, I. Hristova, I. Lehmann, I. Vilardi, J. Bowles, J. Burns, J. Garay Garc\\'ia, J.J.M. Steijger, J. Rubin, K.P. Sch\\\"uler, K. Rith, L. Felawka, L. Lagamba, L. Lapik\\'as, L.L. Pappalardo, M. Contalbrigo, M. Hartig, M. Murray, M. Negodaev, M. Stancari, M. Tytgat, P. Di Nezza, P.E. Reimer, P.F. Dalpiaz, P. Kravchenko, P. Zupranski, R. Avakian, R. De Leo, R. Fabbri, R. Kaiser, R. Perez-Benito, R. Truty, S. Belostotski, S. Frullani, S. Gliske, S.I. Manaenkov, S. Joosten, S. Taroian, S. Wang, S. Yaschenko, S. Yen, T.-A. Shibata, The HERMES Collaboration: N. Akopov, T. Keri, V. Bryzgalov, V.G. Krivokhijine, V. Kozlov, V. Vikhrov, W. Augustyniak, W. Deconinck, W.-D. Nowak, W. Lorenzon, X. Lu, Y. Holler, Y. Imazu, Y. Mao, Y. Miyachi, Y. Salomatin, Y. Van Haarlem, Z. Akopov, Z. Ye","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2014-12-23T10:59:08Z","title":"Pentaquark $\\Theta^+$ search at HERMES"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.7317","kind":"arxiv","version":2},"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":"sha256:726934057ff456001e43503ad76166e0a0d466ffdcff91a981771a3e7c905a5f","target":"record","created_at":"2026-05-18T02:17:51Z","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":"d0863fc2043b6ec4a7334cf810fbd2e08e8a7b2e9af999488c90f180f8511bd5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2014-12-23T10:59:08Z","title_canon_sha256":"0c4bd4b67b455a588fcd084072ed3934d6edbbd7fd4975933ed1c42a08720bb0"},"schema_version":"1.0","source":{"id":"1412.7317","kind":"arxiv","version":2}},"canonical_sha256":"3afd80a91569283ffdeed327098249185be99c589d448aa0e8bbda96db7f9b7a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3afd80a91569283ffdeed327098249185be99c589d448aa0e8bbda96db7f9b7a","first_computed_at":"2026-05-18T02:17:51.510168Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:17:51.510168Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jbyvGNLe13gP3HAMNNXycGX3PYRcL1D9mOM3/O+JK32W4zBRhgM4F03us+uGe1xzAY4HndWxClztVETEwUg3DA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:17:51.510677Z","signed_message":"canonical_sha256_bytes"},"source_id":"1412.7317","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:726934057ff456001e43503ad76166e0a0d466ffdcff91a981771a3e7c905a5f","sha256:cc9d7c0fb2b8abda26039ea6f593ab02f4ba10192338116d79b5b315bb65316d"],"state_sha256":"d4c3b1bc090e3be397797adf7fba534dbb6baf7060f9c1426f7d41ce054b6342"}