{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:OLSIFI4SBWQFFF7OVHVRP2RSNJ","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":"fc112fc368084ef0b8b8b6e52a5fbc218b778a3693efc71b22064aa49e580f1e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2012-07-03T04:47:14Z","title_canon_sha256":"04f3c5d0b113a50111efe51826050b7befc587c1708deafcc44b925f3d479610"},"schema_version":"1.0","source":{"id":"1207.0571","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.0571","created_at":"2026-05-18T01:56:35Z"},{"alias_kind":"arxiv_version","alias_value":"1207.0571v4","created_at":"2026-05-18T01:56:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.0571","created_at":"2026-05-18T01:56:35Z"},{"alias_kind":"pith_short_12","alias_value":"OLSIFI4SBWQF","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"OLSIFI4SBWQFFF7O","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"OLSIFI4S","created_at":"2026-05-18T12:27:16Z"}],"graph_snapshots":[{"event_id":"sha256:27536910b2dc472e10821dd9c002ed3cb362b80c181448ec95234f74df6bf93f","target":"graph","created_at":"2026-05-18T01:56:35Z","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":"An experiment with a newly developed high-resolution kaon spectrometer (HKS) and a scattered electron spectrometer with a novel configuration was performed in Hall C at Jefferson Lab (JLab). The ground state of a neutron-rich hypernucleus, He 7 Lambda, was observed for the first time with the (e,e'K+) reaction with an energy resolution of ~0.6 MeV. This resolution is the best reported to date for hypernuclear reaction spectroscopy. The he 7 Lambda binding energy supplies the last missing information of the A=7, T=1 hypernuclear iso-triplet, providing a new input for the charge symmetry breakin","authors_text":"A. Acha, A. Ahmidouch, A. Asaturyan, A. Daniel, A. Gasparian, A. Margaryan, A. Matsumura, A. Mkrtchyan, A. Ohtani, B. Hu, C. Chen, C. Jayalath, C. Keppel, C. Yan, D. Androic, D. Gaskell, D. Honda, D. Kawama, D. Mack, Ed V. Hungerford, E. F. Gibson, E. Hiyama, E. K. Segbefia, F. Benmokhtar, F. Kato, G. Marikyan, G. Niculescu, G. Smith, H. Fenker, H. Kanda, H. Mkrtchyan, H. Nomura, J. Reinhold, J. Roche, K. Egiyan, K. J. Lan, K. Johnston, K. Maeda, K. Nonaka, K. Tsukada, L. Cole, L. Gan, L. Tang, L. Yuan, M. Christy, M. Elaasar, M. Furic, M.-I. Niculescu, M. Jones, M. Kaneta, M. Oyamada, M. Sumihama, N. Kalantarians, N. Maruyama, N. Perez, N. Simicevic, O. Hashimoto, O. K. Baker, P. Baturin, P. Bosted, P. Gueye, P. Markowitz, R. Asaturyan, R. Carlini, R. Ent, S. A. Wood, S. Danagoulian, S. Kato, S. Malace, S. Nagao, S. N. Nakamura, S. Randeniya, S. Wells, S. Zhamkochyan (HKS (JLab E01-011) Collaboration), T. Gogami, T. Horn, T. Maruta, T. Miyoshi, T. Navasardyan, T. Petkovic, T. Seva, T. Takahashi, V. Dharmawardane, V. M. Rodriguez, V. Tadevosyan, V. Tvaskis, W. Luo, W. Vulcan, Y. Fujii, Y. Han, Y. Okayasu, Y. Sato, Y. Song","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2012-07-03T04:47:14Z","title":"Observation of the Helium 7 Lambda hypernucleus by the (e,e'K+) reaction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.0571","kind":"arxiv","version":4},"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":"sha256:5a35be42a8130942ae3157e3cd6e8a969f35e688879230d0a29aa695dd6ecbe2","target":"record","created_at":"2026-05-18T01:56:35Z","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":"fc112fc368084ef0b8b8b6e52a5fbc218b778a3693efc71b22064aa49e580f1e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2012-07-03T04:47:14Z","title_canon_sha256":"04f3c5d0b113a50111efe51826050b7befc587c1708deafcc44b925f3d479610"},"schema_version":"1.0","source":{"id":"1207.0571","kind":"arxiv","version":4}},"canonical_sha256":"72e482a3920da05297eea9eb17ea326a52effce6a4b21612f5c939c490e99e0b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"72e482a3920da05297eea9eb17ea326a52effce6a4b21612f5c939c490e99e0b","first_computed_at":"2026-05-18T01:56:35.471125Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:56:35.471125Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"M3fYPArJxQxA/FmstJLuy8aSYEEWbNKTDbm4nqq4hjY0MbxPLXdfJfBFrhiOOD8S1acUeqCzCQf0buVIYjgKDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:56:35.471607Z","signed_message":"canonical_sha256_bytes"},"source_id":"1207.0571","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5a35be42a8130942ae3157e3cd6e8a969f35e688879230d0a29aa695dd6ecbe2","sha256:27536910b2dc472e10821dd9c002ed3cb362b80c181448ec95234f74df6bf93f"],"state_sha256":"4cb6aba4f8478e6aaceaf763dc0eb3e6703dfb3f812133a65aedf4b9dc480f09"}