{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:PCAIJDIFAUJXOWRLF6KDUGQSJX","short_pith_number":"pith:PCAIJDIF","schema_version":"1.0","canonical_sha256":"7880848d050513775a2b2f943a1a124df4214075acb09a9ec14b3b4315405ec0","source":{"kind":"arxiv","id":"1906.07818","version":2},"attestation_state":"computed","paper":{"title":"Observation of the $^7$H excited state","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A.A. Bezbakh, A.M. Quynh, A. Serikov, A.S. Fomichev, A. Swiercz, A.V. Gorshkov, B. Mauyey, B. Zalewski, D.A. Kostyleva, D. Biare, E.M. Gazeeva, E.Yu. Nikolskii, G. Kaminski, G.M. Ter-Akopian, I.A. Muzalevskii, I. Mukha, L.V. Grigorenko, M.V. Zhukov, M.Yu. Kozlov, O. Kiselev, P.G. Sharov, P. Szymkiewicz, R.S. Slepnev, R. Wolski, S.A. Krupko, S.G. Belogurov, S.I. Sidorchuk, S.V. Stepantsov, V. Chudoba, V.N. Schetinin, W. Piatek, Yu.L. Parfenova","submitted_at":"2019-06-18T21:36:19Z","abstract_excerpt":"The $^7$H system was populated in the $^2$H($^8$He,$^3$He)$^7$H reaction with a 26 AMeV $^8$He beam. The $^{7}$H missing mass energy spectrum, the $^{3}$H energy and angular distributions in the $^7$H decay frame were reconstructed. The $^7$H missing mass spectrum shows a peak which can be interpreted either as unresolved $5/2^+$ and $3/2^+$ doublet or one of these states at 6.5(5) MeV. The data also provide indications on the $1/2^+$ ground state of $^7$H located at 2.0(5) MeV with quite a low population cross section of $\\sim 10$ $\\mu$b/sr within angular range $\\theta_{\\text{cm}} \\simeq 6^{\\"},"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":"1906.07818","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2019-06-18T21:36:19Z","cross_cats_sorted":[],"title_canon_sha256":"35e6644f957238992ae8ab78dbefbe169e6ba66ac2547ec9023a23ba2ca1a2fd","abstract_canon_sha256":"9ae8e772ca59d3eb0aa46f8c1984a3325890e76010cc3ecdf17def95f08057ae"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:34:40.776095Z","signature_b64":"WFT2XRX5thC0io2yb7YOsefvezBxpxok/1mKPVJMgh3AQpkksmfigiCW7MkWc2IHQeeJO/7b+kZAR6a2CkRfDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7880848d050513775a2b2f943a1a124df4214075acb09a9ec14b3b4315405ec0","last_reissued_at":"2026-07-05T00:34:40.775658Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:34:40.775658Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Observation of the $^7$H excited state","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A.A. Bezbakh, A.M. Quynh, A. Serikov, A.S. Fomichev, A. Swiercz, A.V. Gorshkov, B. Mauyey, B. Zalewski, D.A. Kostyleva, D. Biare, E.M. Gazeeva, E.Yu. Nikolskii, G. Kaminski, G.M. Ter-Akopian, I.A. Muzalevskii, I. Mukha, L.V. Grigorenko, M.V. Zhukov, M.Yu. Kozlov, O. Kiselev, P.G. Sharov, P. Szymkiewicz, R.S. Slepnev, R. Wolski, S.A. Krupko, S.G. Belogurov, S.I. Sidorchuk, S.V. Stepantsov, V. Chudoba, V.N. Schetinin, W. Piatek, Yu.L. Parfenova","submitted_at":"2019-06-18T21:36:19Z","abstract_excerpt":"The $^7$H system was populated in the $^2$H($^8$He,$^3$He)$^7$H reaction with a 26 AMeV $^8$He beam. The $^{7}$H missing mass energy spectrum, the $^{3}$H energy and angular distributions in the $^7$H decay frame were reconstructed. The $^7$H missing mass spectrum shows a peak which can be interpreted either as unresolved $5/2^+$ and $3/2^+$ doublet or one of these states at 6.5(5) MeV. The data also provide indications on the $1/2^+$ ground state of $^7$H located at 2.0(5) MeV with quite a low population cross section of $\\sim 10$ $\\mu$b/sr within angular range $\\theta_{\\text{cm}} \\simeq 6^{\\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.07818","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1906.07818/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"1906.07818","created_at":"2026-07-05T00:34:40.775719+00:00"},{"alias_kind":"arxiv_version","alias_value":"1906.07818v2","created_at":"2026-07-05T00:34:40.775719+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.07818","created_at":"2026-07-05T00:34:40.775719+00:00"},{"alias_kind":"pith_short_12","alias_value":"PCAIJDIFAUJX","created_at":"2026-07-05T00:34:40.775719+00:00"},{"alias_kind":"pith_short_16","alias_value":"PCAIJDIFAUJXOWRL","created_at":"2026-07-05T00:34:40.775719+00:00"},{"alias_kind":"pith_short_8","alias_value":"PCAIJDIF","created_at":"2026-07-05T00:34:40.775719+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/PCAIJDIFAUJXOWRLF6KDUGQSJX","json":"https://pith.science/pith/PCAIJDIFAUJXOWRLF6KDUGQSJX.json","graph_json":"https://pith.science/api/pith-number/PCAIJDIFAUJXOWRLF6KDUGQSJX/graph.json","events_json":"https://pith.science/api/pith-number/PCAIJDIFAUJXOWRLF6KDUGQSJX/events.json","paper":"https://pith.science/paper/PCAIJDIF"},"agent_actions":{"view_html":"https://pith.science/pith/PCAIJDIFAUJXOWRLF6KDUGQSJX","download_json":"https://pith.science/pith/PCAIJDIFAUJXOWRLF6KDUGQSJX.json","view_paper":"https://pith.science/paper/PCAIJDIF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1906.07818&json=true","fetch_graph":"https://pith.science/api/pith-number/PCAIJDIFAUJXOWRLF6KDUGQSJX/graph.json","fetch_events":"https://pith.science/api/pith-number/PCAIJDIFAUJXOWRLF6KDUGQSJX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PCAIJDIFAUJXOWRLF6KDUGQSJX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PCAIJDIFAUJXOWRLF6KDUGQSJX/action/storage_attestation","attest_author":"https://pith.science/pith/PCAIJDIFAUJXOWRLF6KDUGQSJX/action/author_attestation","sign_citation":"https://pith.science/pith/PCAIJDIFAUJXOWRLF6KDUGQSJX/action/citation_signature","submit_replication":"https://pith.science/pith/PCAIJDIFAUJXOWRLF6KDUGQSJX/action/replication_record"}},"created_at":"2026-07-05T00:34:40.775719+00:00","updated_at":"2026-07-05T00:34:40.775719+00:00"}