{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:KCQKWCSWA7JUQRITEOJ4XCUHD5","short_pith_number":"pith:KCQKWCSW","canonical_record":{"source":{"id":"1503.05631","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-03-19T02:25:19Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"4e854d80b87511d91e41f2d1ea952d14804954eb5fe99872b7ba5255b55c1d9a","abstract_canon_sha256":"3ac36653753d5d931163f0ba4491ae0faa44353615e63a6118ef49753df5f8e8"},"schema_version":"1.0"},"canonical_sha256":"50a0ab0a5607d34845132393cb8a871f76b5af0f81868ad4725efcd1e87dcb1d","source":{"kind":"arxiv","id":"1503.05631","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.05631","created_at":"2026-05-18T02:20:58Z"},{"alias_kind":"arxiv_version","alias_value":"1503.05631v1","created_at":"2026-05-18T02:20:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.05631","created_at":"2026-05-18T02:20:58Z"},{"alias_kind":"pith_short_12","alias_value":"KCQKWCSWA7JU","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"KCQKWCSWA7JUQRIT","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"KCQKWCSW","created_at":"2026-05-18T12:29:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:KCQKWCSWA7JUQRITEOJ4XCUHD5","target":"record","payload":{"canonical_record":{"source":{"id":"1503.05631","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-03-19T02:25:19Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"4e854d80b87511d91e41f2d1ea952d14804954eb5fe99872b7ba5255b55c1d9a","abstract_canon_sha256":"3ac36653753d5d931163f0ba4491ae0faa44353615e63a6118ef49753df5f8e8"},"schema_version":"1.0"},"canonical_sha256":"50a0ab0a5607d34845132393cb8a871f76b5af0f81868ad4725efcd1e87dcb1d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:20:58.527565Z","signature_b64":"LMHp6ZpAehTCyqNUCtvs6QP6cxjHNM4+9Keju0Tz/vC9I7Ox7TjqElQQ/nXZ8854Py/iBLeP3YUclANR92N1AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"50a0ab0a5607d34845132393cb8a871f76b5af0f81868ad4725efcd1e87dcb1d","last_reissued_at":"2026-05-18T02:20:58.526820Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:20:58.526820Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.05631","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":"2026-05-18T02:20:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1oxEmMtr28/6v2tQlPzOU/HzDtgLtb9SXzpfVxcAwYlc0d4OGTX0NEO2k5ioN1fnvlS+TS/6YHVaFn/9BXS6DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T02:47:35.013552Z"},"content_sha256":"aaea3e7fffcecedcf41d5e6175e25cbc2288ccfbcf16e4db788bb9ab0ffa49f3","schema_version":"1.0","event_id":"sha256:aaea3e7fffcecedcf41d5e6175e25cbc2288ccfbcf16e4db788bb9ab0ffa49f3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:KCQKWCSWA7JUQRITEOJ4XCUHD5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Different mechanism of two-proton emission from proton-rich nuclei $^{23}$Al and $^{22}$Mg","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"nucl-ex","authors_text":"A. Ozawa, D.Q. Fang, E. Takeshita, G.Q. Zhang, H. Baba, H. Kimura, H. Murakami, H. Ooishi, H. Sakurai, H.W. Wang, J.G. Chen, J.S. Wang, K. Ieki, K. Kurita, K. Okada, K. Yamada, K. Yoneda, M. Kurokawa, M. Wang, N. Aoi, N. Iwasa, P. Zhou, R. Shioda, S. Kanno, S. Ota, S. Shimoura, S. Takeuchi, T. Honda, T. Kawabata, T. Moriguchi, T. Motobayashi, W.D. Tian, W. Guo, X.G. Cao, X.Y. Sun, X.Z. Cai, Y. Fu, Y.G. Ma, Y. Hara, Y. Ishibashi, Y. Ito, Y. Kondo, Y. Togano, Y. Yamada, Y. Yasuda, Z.G. Hu","submitted_at":"2015-03-19T02:25:19Z","abstract_excerpt":"Two-proton relative momentum ($q_{pp}$) and opening angle ($\\theta_{pp}$) distributions from the three-body decay of two excited proton-rich nuclei, namely $^{23}$Al $\\rightarrow$ p + p + $^{21}$Na and $^{22}$Mg $\\rightarrow$ p + p + $^{20}$Ne, have been measured with the projectile fragment separator (RIPS) at the RIKEN RI Beam Factory. An evident peak at $q_{pp}\\sim20$ MeV/c as well as a peak in $\\theta_{pp}$ around 30$^\\circ$ are seen in the two-proton break-up channel from a highly-excited $^{22}$Mg. In contrast, such peaks are absent for the $^{23}$Al case. It is concluded that the two-pr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.05631","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":""},"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":"2026-05-18T02:20:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y5kxXRy46+guKWtc9V/StLZF9cWSqtuwIx8IpYMzcV9yoSLINfeESE+Nf26SXTcfnBEMSUjWTTinMYl25J/LDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T02:47:35.014211Z"},"content_sha256":"82109314d43f179ab1594d2b96eaa140106e629d4b41f1565848b01f3a319557","schema_version":"1.0","event_id":"sha256:82109314d43f179ab1594d2b96eaa140106e629d4b41f1565848b01f3a319557"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KCQKWCSWA7JUQRITEOJ4XCUHD5/bundle.json","state_url":"https://pith.science/pith/KCQKWCSWA7JUQRITEOJ4XCUHD5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KCQKWCSWA7JUQRITEOJ4XCUHD5/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":"2026-05-19T02:47:35Z","links":{"resolver":"https://pith.science/pith/KCQKWCSWA7JUQRITEOJ4XCUHD5","bundle":"https://pith.science/pith/KCQKWCSWA7JUQRITEOJ4XCUHD5/bundle.json","state":"https://pith.science/pith/KCQKWCSWA7JUQRITEOJ4XCUHD5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KCQKWCSWA7JUQRITEOJ4XCUHD5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:KCQKWCSWA7JUQRITEOJ4XCUHD5","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":"3ac36653753d5d931163f0ba4491ae0faa44353615e63a6118ef49753df5f8e8","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-03-19T02:25:19Z","title_canon_sha256":"4e854d80b87511d91e41f2d1ea952d14804954eb5fe99872b7ba5255b55c1d9a"},"schema_version":"1.0","source":{"id":"1503.05631","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.05631","created_at":"2026-05-18T02:20:58Z"},{"alias_kind":"arxiv_version","alias_value":"1503.05631v1","created_at":"2026-05-18T02:20:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.05631","created_at":"2026-05-18T02:20:58Z"},{"alias_kind":"pith_short_12","alias_value":"KCQKWCSWA7JU","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"KCQKWCSWA7JUQRIT","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"KCQKWCSW","created_at":"2026-05-18T12:29:27Z"}],"graph_snapshots":[{"event_id":"sha256:82109314d43f179ab1594d2b96eaa140106e629d4b41f1565848b01f3a319557","target":"graph","created_at":"2026-05-18T02:20:58Z","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":"Two-proton relative momentum ($q_{pp}$) and opening angle ($\\theta_{pp}$) distributions from the three-body decay of two excited proton-rich nuclei, namely $^{23}$Al $\\rightarrow$ p + p + $^{21}$Na and $^{22}$Mg $\\rightarrow$ p + p + $^{20}$Ne, have been measured with the projectile fragment separator (RIPS) at the RIKEN RI Beam Factory. An evident peak at $q_{pp}\\sim20$ MeV/c as well as a peak in $\\theta_{pp}$ around 30$^\\circ$ are seen in the two-proton break-up channel from a highly-excited $^{22}$Mg. In contrast, such peaks are absent for the $^{23}$Al case. It is concluded that the two-pr","authors_text":"A. Ozawa, D.Q. Fang, E. Takeshita, G.Q. Zhang, H. Baba, H. Kimura, H. Murakami, H. Ooishi, H. Sakurai, H.W. Wang, J.G. Chen, J.S. Wang, K. Ieki, K. Kurita, K. Okada, K. Yamada, K. Yoneda, M. Kurokawa, M. Wang, N. Aoi, N. Iwasa, P. Zhou, R. Shioda, S. Kanno, S. Ota, S. Shimoura, S. Takeuchi, T. Honda, T. Kawabata, T. Moriguchi, T. Motobayashi, W.D. Tian, W. Guo, X.G. Cao, X.Y. Sun, X.Z. Cai, Y. Fu, Y.G. Ma, Y. Hara, Y. Ishibashi, Y. Ito, Y. Kondo, Y. Togano, Y. Yamada, Y. Yasuda, Z.G. Hu","cross_cats":["nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-03-19T02:25:19Z","title":"Different mechanism of two-proton emission from proton-rich nuclei $^{23}$Al and $^{22}$Mg"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.05631","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:aaea3e7fffcecedcf41d5e6175e25cbc2288ccfbcf16e4db788bb9ab0ffa49f3","target":"record","created_at":"2026-05-18T02:20:58Z","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":"3ac36653753d5d931163f0ba4491ae0faa44353615e63a6118ef49753df5f8e8","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-03-19T02:25:19Z","title_canon_sha256":"4e854d80b87511d91e41f2d1ea952d14804954eb5fe99872b7ba5255b55c1d9a"},"schema_version":"1.0","source":{"id":"1503.05631","kind":"arxiv","version":1}},"canonical_sha256":"50a0ab0a5607d34845132393cb8a871f76b5af0f81868ad4725efcd1e87dcb1d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"50a0ab0a5607d34845132393cb8a871f76b5af0f81868ad4725efcd1e87dcb1d","first_computed_at":"2026-05-18T02:20:58.526820Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:20:58.526820Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LMHp6ZpAehTCyqNUCtvs6QP6cxjHNM4+9Keju0Tz/vC9I7Ox7TjqElQQ/nXZ8854Py/iBLeP3YUclANR92N1AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:20:58.527565Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.05631","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aaea3e7fffcecedcf41d5e6175e25cbc2288ccfbcf16e4db788bb9ab0ffa49f3","sha256:82109314d43f179ab1594d2b96eaa140106e629d4b41f1565848b01f3a319557"],"state_sha256":"39d4a1a6ea4fb32b0e929b9449fea16a16c7b91ac35ece2a4edd516ade699d3c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1b3RZVhffrW3lP6WA+vPQ5EJIVAHxH7mFUUTRcxiUskXQTsOVyr+VpqsRD5fikBZwdiSBppmaeHjUTSMaTnWCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T02:47:35.015923Z","bundle_sha256":"f1fc2229c3e3294327aa65ab2286b92f1d5cce25b3c77f6821c42192008f56e2"}}