{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:TJLFSMM6JI7VTWFITBEVPNL6UL","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":"1c12214dc05dd056d57907b5eebb780c10b6c40f2c57d79f1af22d458e33e68f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-07-07T15:05:24Z","title_canon_sha256":"0cde3f90deaff6e940389acf71616f990e6c09727da925e9d058a4484a79ab64"},"schema_version":"1.0","source":{"id":"1507.01833","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.01833","created_at":"2026-05-18T01:27:53Z"},{"alias_kind":"arxiv_version","alias_value":"1507.01833v1","created_at":"2026-05-18T01:27:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.01833","created_at":"2026-05-18T01:27:53Z"},{"alias_kind":"pith_short_12","alias_value":"TJLFSMM6JI7V","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"TJLFSMM6JI7VTWFI","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"TJLFSMM6","created_at":"2026-05-18T12:29:42Z"}],"graph_snapshots":[{"event_id":"sha256:ee87266c5c463bb665650ecea64e9d8b6fed8ac205d458e6fd1634ccd29044d2","target":"graph","created_at":"2026-05-18T01:27:53Z","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":"Photoproduction of $\\pi\\eta$-pairs from nucleons has been investigated from threshold up to incident photon energies of $\\approx$~1.4~GeV. The quasi-free reactions $\\gamma p\\rightarrow p\\pi^0\\eta$, $\\gamma n\\rightarrow n\\pi^0\\eta$, $\\gamma p\\rightarrow n\\pi^+\\eta$, and $\\gamma n\\rightarrow p\\pi^-\\eta$ were for the first time measured from nucleons bound in the deuteron. The corresponding reactions from a free-proton target were also studied to investigate final-state interaction effects (for neutral pions the free-proton results could be compared to previous measurements; the $\\gamma p\\rightar","authors_text":"A. Braghieri, A. Fix, A. K\\\"aser, A. Mushkarenkov, A. Nikolaev, A. Polonski, A. Starostin, A. Thomas, B. Demissie, B. Krusche, B. Oussena, D. Branford, D.G. Middleton, D. Hamilton, D. Hornidge, D. Howdle, D.I. Glazier, D.I. Sober, D. Mekterovic, D.M. Manley, D.P. Watts, D. Werthm\\\"uller, E. Heid, E.J. Downie, E. McNicoll, F. Pheron, G.M. Huber, G. Rosner, H. Bergh\\\"auser, H.J. Arends, I. Jaegle, I.J.D. MacGregor, I. Keshelashvili, I. Supek, J. Ahrens, J. Brudvik, J.C. McGeorge, J. Mancell, J.R.M. Annand, J. Robinson, K. Bantawa, K. Livingston, L.V. Fil'kov, L. Witthauer, M. Dieterle, M.H. Sikora, M. Korolija, M. Oberle, M. Ostrick, M. Thiel, M. Unverzagt, O. Jahn, P.A. Bartolome, P. Drexler, P. Otte, P. Pedroni, R. Beck, R. Kondratiev, R. Novotny, S. Cherepnya, S. Costanza, S. Micanovic, S.N. Prakhov, S.P. Kruglov, S. Schumann, T.C. Jude, T. Rostomyan, V. Bekrenev, V. Lisin, V.L. Kashevarov, V. Metag, W.J. Briscoe, Y. Maghrbi, Z. Marinides","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-07-07T15:05:24Z","title":"The isospin structure of photoproduction of pi-eta pairs from the nucleon in the threshold region"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.01833","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":"sha256:9e77abf511f91ffacfa0c521a8852fb2d26a1b7583b6de42736e7c3b42e8af14","target":"record","created_at":"2026-05-18T01:27:53Z","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":"1c12214dc05dd056d57907b5eebb780c10b6c40f2c57d79f1af22d458e33e68f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-07-07T15:05:24Z","title_canon_sha256":"0cde3f90deaff6e940389acf71616f990e6c09727da925e9d058a4484a79ab64"},"schema_version":"1.0","source":{"id":"1507.01833","kind":"arxiv","version":1}},"canonical_sha256":"9a5659319e4a3f59d8a8984957b57ea2ff58b25ff7e1c05cf7cacce18fcbfba9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9a5659319e4a3f59d8a8984957b57ea2ff58b25ff7e1c05cf7cacce18fcbfba9","first_computed_at":"2026-05-18T01:27:53.869919Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:27:53.869919Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"l85kTPcmAd3GHteGvjW3vSCzp/Mi0xe3N4DpM6WSmYVQ1libA0ssD8kCPyDpcLlr/3Zr4Ye1a8qEr8WZoyZjAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:27:53.870725Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.01833","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9e77abf511f91ffacfa0c521a8852fb2d26a1b7583b6de42736e7c3b42e8af14","sha256:ee87266c5c463bb665650ecea64e9d8b6fed8ac205d458e6fd1634ccd29044d2"],"state_sha256":"f6fbba12fc3b1c298e25f2cd0a3323156a17bc6c0eb2f78f12b8ebe3bcd669a7"}