{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:EMOWNZN2GM4MGP7RWUBTU3UADV","short_pith_number":"pith:EMOWNZN2","canonical_record":{"source":{"id":"2312.11313","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2023-12-18T16:06:31Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"a8676ee3eb3709023e073ab9a09a602b2c69f09ab3d5d2778bc2395497975462","abstract_canon_sha256":"30881feeb36950caa310df4812d01977664177ab5a8d9d9e2b15c338da7323b9"},"schema_version":"1.0"},"canonical_sha256":"231d66e5ba3338c33ff1b5033a6e801d6247290d5b41ad7f0a8337714377051a","source":{"kind":"arxiv","id":"2312.11313","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2312.11313","created_at":"2026-07-05T07:25:31Z"},{"alias_kind":"arxiv_version","alias_value":"2312.11313v1","created_at":"2026-07-05T07:25:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2312.11313","created_at":"2026-07-05T07:25:31Z"},{"alias_kind":"pith_short_12","alias_value":"EMOWNZN2GM4M","created_at":"2026-07-05T07:25:31Z"},{"alias_kind":"pith_short_16","alias_value":"EMOWNZN2GM4MGP7R","created_at":"2026-07-05T07:25:31Z"},{"alias_kind":"pith_short_8","alias_value":"EMOWNZN2","created_at":"2026-07-05T07:25:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:EMOWNZN2GM4MGP7RWUBTU3UADV","target":"record","payload":{"canonical_record":{"source":{"id":"2312.11313","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2023-12-18T16:06:31Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"a8676ee3eb3709023e073ab9a09a602b2c69f09ab3d5d2778bc2395497975462","abstract_canon_sha256":"30881feeb36950caa310df4812d01977664177ab5a8d9d9e2b15c338da7323b9"},"schema_version":"1.0"},"canonical_sha256":"231d66e5ba3338c33ff1b5033a6e801d6247290d5b41ad7f0a8337714377051a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:25:31.484659Z","signature_b64":"9yN2WtjJVm3xBoE1d43HYF1bjCX0Bpam0wfJLYjcuMiBwALU+/YGi0i8ljGhgiS1D5bEYAClL1WkF+66Xd59AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"231d66e5ba3338c33ff1b5033a6e801d6247290d5b41ad7f0a8337714377051a","last_reissued_at":"2026-07-05T07:25:31.482668Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:25:31.482668Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2312.11313","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:25:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U0v+w/rjVdZhI2OcRBqdeYutlfaTwAmJ0c92AF6z/krgEfQ5ywLdkDo+1CDmv/qMevKGYzvInlcwhn1sVci5CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T20:15:13.642815Z"},"content_sha256":"2625d5e801ac44370941bb38ca2827c905e99bd9bcd74667b6715119590f6aee","schema_version":"1.0","event_id":"sha256:2625d5e801ac44370941bb38ca2827c905e99bd9bcd74667b6715119590f6aee"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:EMOWNZN2GM4MGP7RWUBTU3UADV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Measurement of the Isolated Nuclear Two-Photon Decay in $^{72}\\mathrm{Ge}$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"nucl-ex","authors_text":"A. Banerjee, A. G\\\"orgen, A. Gumberidze, A. Mistry, A. Ozawa, B. A. Brown, B. Jurado, B. Lorenz, C. Brandau, C. G. Bruno, Ch. J. Chiara, Ch. Kozhuharov, C. J. Griffin, D. Dmytriiev, D. Freire-Fern\\'andez, D. Kalaydjieva, F. C. Akinci, F. G. Kondev, G. Kosir, G. Leckenby, H. Geissel, H. M. Albers, H. Weick, I. Dillmann, I. Kulikov, J. A. Swartz, J. Glorius, J. J. Carroll, J. Marsh, J. Vesic, K. Blaum, K. E. Ide, K. Kanika, M. Armstrong, M. G\\'orska, M. L. Cortes, M. Polettini, M. Sguazzin, M. S. Sanjari, M. Steck, N. Hubbard, N. Pietralla, O. Forstner, Ph. R. John, P. Koseoglou, P. M. Walker, R. Hess, R. J. Chen, R. Joseph, R. S. Sidhu, R. Zidarova, S. F. Dellmann, S. Harayama, S. Litvinov, Th. St\\\"ohlker, T. Yamaguchi, W. Korten, X. Chen, Yu. A. Litvinov, Zs. Podoly\\'ak","submitted_at":"2023-12-18T16:06:31Z","abstract_excerpt":"The nuclear two-photon or double-gamma ($2\\gamma$) decay is a second-order electromagnetic process whereby a nucleus in an excited state emits two gamma rays simultaneously. To be able to directly measure the $2\\gamma$ decay rate in the low-energy regime below the electron-positron pair-creation threshold, we combined the isochronous mode of a storage ring with Schottky resonant cavities. The newly developed technique can be applied to isomers with excitation energies down to $\\sim100$\\,keV and half-lives as short as $\\sim10$\\,ms. The half-life for the $2\\gamma$ decay of the first-excited $0^+"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2312.11313","kind":"arxiv","version":1},"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/2312.11313/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:25:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dFc1QDZ74awe3bp64wxTk/wx5JqlPtXZqxbBxk1DvXJjLTYxN0ANZlP5uDvfvTXyJ3TLc2gN06v6Sm2oj/SFCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T20:15:13.643331Z"},"content_sha256":"8c1ba57507a304a944f1bd0c243e6acc01908ab50ac36d694923d09e3a89988b","schema_version":"1.0","event_id":"sha256:8c1ba57507a304a944f1bd0c243e6acc01908ab50ac36d694923d09e3a89988b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EMOWNZN2GM4MGP7RWUBTU3UADV/bundle.json","state_url":"https://pith.science/pith/EMOWNZN2GM4MGP7RWUBTU3UADV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EMOWNZN2GM4MGP7RWUBTU3UADV/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-17T20:15:13Z","links":{"resolver":"https://pith.science/pith/EMOWNZN2GM4MGP7RWUBTU3UADV","bundle":"https://pith.science/pith/EMOWNZN2GM4MGP7RWUBTU3UADV/bundle.json","state":"https://pith.science/pith/EMOWNZN2GM4MGP7RWUBTU3UADV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EMOWNZN2GM4MGP7RWUBTU3UADV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:EMOWNZN2GM4MGP7RWUBTU3UADV","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":"30881feeb36950caa310df4812d01977664177ab5a8d9d9e2b15c338da7323b9","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2023-12-18T16:06:31Z","title_canon_sha256":"a8676ee3eb3709023e073ab9a09a602b2c69f09ab3d5d2778bc2395497975462"},"schema_version":"1.0","source":{"id":"2312.11313","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2312.11313","created_at":"2026-07-05T07:25:31Z"},{"alias_kind":"arxiv_version","alias_value":"2312.11313v1","created_at":"2026-07-05T07:25:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2312.11313","created_at":"2026-07-05T07:25:31Z"},{"alias_kind":"pith_short_12","alias_value":"EMOWNZN2GM4M","created_at":"2026-07-05T07:25:31Z"},{"alias_kind":"pith_short_16","alias_value":"EMOWNZN2GM4MGP7R","created_at":"2026-07-05T07:25:31Z"},{"alias_kind":"pith_short_8","alias_value":"EMOWNZN2","created_at":"2026-07-05T07:25:31Z"}],"graph_snapshots":[{"event_id":"sha256:8c1ba57507a304a944f1bd0c243e6acc01908ab50ac36d694923d09e3a89988b","target":"graph","created_at":"2026-07-05T07:25:31Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2312.11313/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The nuclear two-photon or double-gamma ($2\\gamma$) decay is a second-order electromagnetic process whereby a nucleus in an excited state emits two gamma rays simultaneously. To be able to directly measure the $2\\gamma$ decay rate in the low-energy regime below the electron-positron pair-creation threshold, we combined the isochronous mode of a storage ring with Schottky resonant cavities. The newly developed technique can be applied to isomers with excitation energies down to $\\sim100$\\,keV and half-lives as short as $\\sim10$\\,ms. The half-life for the $2\\gamma$ decay of the first-excited $0^+","authors_text":"A. Banerjee, A. G\\\"orgen, A. Gumberidze, A. Mistry, A. Ozawa, B. A. Brown, B. Jurado, B. Lorenz, C. Brandau, C. G. Bruno, Ch. J. Chiara, Ch. Kozhuharov, C. J. Griffin, D. Dmytriiev, D. Freire-Fern\\'andez, D. Kalaydjieva, F. C. Akinci, F. G. Kondev, G. Kosir, G. Leckenby, H. Geissel, H. M. Albers, H. Weick, I. Dillmann, I. Kulikov, J. A. Swartz, J. Glorius, J. J. Carroll, J. Marsh, J. Vesic, K. Blaum, K. E. Ide, K. Kanika, M. Armstrong, M. G\\'orska, M. L. Cortes, M. Polettini, M. Sguazzin, M. S. Sanjari, M. Steck, N. Hubbard, N. Pietralla, O. Forstner, Ph. R. John, P. Koseoglou, P. M. Walker, R. Hess, R. J. Chen, R. Joseph, R. S. Sidhu, R. Zidarova, S. F. Dellmann, S. Harayama, S. Litvinov, Th. St\\\"ohlker, T. Yamaguchi, W. Korten, X. Chen, Yu. A. Litvinov, Zs. Podoly\\'ak","cross_cats":["nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2023-12-18T16:06:31Z","title":"Measurement of the Isolated Nuclear Two-Photon Decay in $^{72}\\mathrm{Ge}$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2312.11313","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":"sha256:2625d5e801ac44370941bb38ca2827c905e99bd9bcd74667b6715119590f6aee","target":"record","created_at":"2026-07-05T07:25:31Z","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":"30881feeb36950caa310df4812d01977664177ab5a8d9d9e2b15c338da7323b9","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2023-12-18T16:06:31Z","title_canon_sha256":"a8676ee3eb3709023e073ab9a09a602b2c69f09ab3d5d2778bc2395497975462"},"schema_version":"1.0","source":{"id":"2312.11313","kind":"arxiv","version":1}},"canonical_sha256":"231d66e5ba3338c33ff1b5033a6e801d6247290d5b41ad7f0a8337714377051a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"231d66e5ba3338c33ff1b5033a6e801d6247290d5b41ad7f0a8337714377051a","first_computed_at":"2026-07-05T07:25:31.482668Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:25:31.482668Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9yN2WtjJVm3xBoE1d43HYF1bjCX0Bpam0wfJLYjcuMiBwALU+/YGi0i8ljGhgiS1D5bEYAClL1WkF+66Xd59AA==","signature_status":"signed_v1","signed_at":"2026-07-05T07:25:31.484659Z","signed_message":"canonical_sha256_bytes"},"source_id":"2312.11313","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2625d5e801ac44370941bb38ca2827c905e99bd9bcd74667b6715119590f6aee","sha256:8c1ba57507a304a944f1bd0c243e6acc01908ab50ac36d694923d09e3a89988b"],"state_sha256":"ab8f341bf2238856baf0829e03e45a34751a2b3c4bb305ad8a0044eaff95d883"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NpLSFabh9WlYv9kHy+ofCDTuMhY1JjGeVKmP+y9Fac6mP1vt0NILmRhCg+ldUKg1kEFrc9Ukos/m8zkNiTR1Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-17T20:15:13.647241Z","bundle_sha256":"715b611b31b06e9954d496f9bb23d92b3b8593e360a55d1df07c8dafc15261dc"}}