{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:EVZ5OXXO27TBMOUR24BEXGPPEC","short_pith_number":"pith:EVZ5OXXO","canonical_record":{"source":{"id":"2205.05231","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2022-05-11T01:36:20Z","cross_cats_sorted":["hep-ex","physics.ins-det"],"title_canon_sha256":"a8bec443ced4e0444e5c6a5e0d33f6ff9777706a0e465bee8849cc140f996751","abstract_canon_sha256":"73f9990be7bcc31ddf3519dc86460bb12e2d5f7088af7e483f756124d9464ba5"},"schema_version":"1.0"},"canonical_sha256":"2573d75eeed7e6163a91d7024b99ef208f7eb3376424562c7a54a4591ad3f5e7","source":{"kind":"arxiv","id":"2205.05231","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2205.05231","created_at":"2026-07-05T04:46:14Z"},{"alias_kind":"arxiv_version","alias_value":"2205.05231v2","created_at":"2026-07-05T04:46:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2205.05231","created_at":"2026-07-05T04:46:14Z"},{"alias_kind":"pith_short_12","alias_value":"EVZ5OXXO27TB","created_at":"2026-07-05T04:46:14Z"},{"alias_kind":"pith_short_16","alias_value":"EVZ5OXXO27TBMOUR","created_at":"2026-07-05T04:46:14Z"},{"alias_kind":"pith_short_8","alias_value":"EVZ5OXXO","created_at":"2026-07-05T04:46:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:EVZ5OXXO27TBMOUR24BEXGPPEC","target":"record","payload":{"canonical_record":{"source":{"id":"2205.05231","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2022-05-11T01:36:20Z","cross_cats_sorted":["hep-ex","physics.ins-det"],"title_canon_sha256":"a8bec443ced4e0444e5c6a5e0d33f6ff9777706a0e465bee8849cc140f996751","abstract_canon_sha256":"73f9990be7bcc31ddf3519dc86460bb12e2d5f7088af7e483f756124d9464ba5"},"schema_version":"1.0"},"canonical_sha256":"2573d75eeed7e6163a91d7024b99ef208f7eb3376424562c7a54a4591ad3f5e7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:46:14.631221Z","signature_b64":"/B/g0vrewlrqHJ50/TAtG4CjyJ6y6N+1Obhet/fHWsuIT52ZlsAJjoh0ukxIOZ7EEj9Fs9WTfmZV+oYagvu/AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2573d75eeed7e6163a91d7024b99ef208f7eb3376424562c7a54a4591ad3f5e7","last_reissued_at":"2026-07-05T04:46:14.630783Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:46:14.630783Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2205.05231","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T04:46:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SE94E9ljHbV+g12vI+wXTwHIngk36d8Ugp8pl/Gs9PGtZeZa3T2ccqe3HkZFCDAvBQ5nh+zW+i4LR+Uass29Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:29:55.534578Z"},"content_sha256":"c01cf70d0782e9091eacdcb09d6a4324c08ae229b9e8f0806859703590418cbd","schema_version":"1.0","event_id":"sha256:c01cf70d0782e9091eacdcb09d6a4324c08ae229b9e8f0806859703590418cbd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:EVZ5OXXO27TBMOUR24BEXGPPEC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Search for neutrinoless quadruple beta decay of $^{136}$Xe in XMASS-I","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","physics.ins-det"],"primary_cat":"nucl-ex","authors_text":"A. Mason, A. Takeda, B. D. Xu, B. S. Yang, H.Ogawa, H. Sekiya, K. B. Lee, K. Fushimi, K.Hiraide, K.Ichimura, K. Kanzawa, K.Kobayashi, K. Martens, K. Masuda, K. Miuchi, K. Nishijima, K. Sato, M. K. Lee, M.Kobayashi, M. Nakahata, M. Yamashita, N.Kato, N. Y. Kim, R. Ishii, S. Moriyama, S. Nakamura, S. Tasaka, T. Suzuki, XMASS Collaboration : K.Abe, Y. D. Kim, Y. Fukuda, Y. H. Kim, Y. Itow, Y.Kishimoto, Y. Suzuki, Y. Takeuchi","submitted_at":"2022-05-11T01:36:20Z","abstract_excerpt":"A search for the neutrinoless quadruple beta decay of $^{136}$Xe was conducted with the liquid-xenon detector XMASS-I using $\\rm 327\\; kg \\times 800.0 \\; days$ of the exposure. The pulse shape discrimination based on the scintillation decay time constant which distinguishes $\\gamma$-rays including the signal and $\\beta$-rays was used to enhance the search sensitivity. No significant signal excess was observed from the energy spectrum fitting with precise background evaluation, and we set a lower limit of the half life of 3.7 $\\times$ 10$^{24}$ years at 90$\\%$ confidence level. This is the firs"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2205.05231","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/2205.05231/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":"2026-07-05T04:46:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ipi87t6tu2njKIUo9zo01Vt18ssyCPP7UPhCMLgWq444gbBY331Yfw5f+DD0Jch1pRx+TsG0RMQg59htaUcaDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:29:55.535887Z"},"content_sha256":"772d741acf29c2e5741b5c2ecd1fca600903638978be17e4a731c3b794457c77","schema_version":"1.0","event_id":"sha256:772d741acf29c2e5741b5c2ecd1fca600903638978be17e4a731c3b794457c77"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EVZ5OXXO27TBMOUR24BEXGPPEC/bundle.json","state_url":"https://pith.science/pith/EVZ5OXXO27TBMOUR24BEXGPPEC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EVZ5OXXO27TBMOUR24BEXGPPEC/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":"2026-08-03T16:29:55Z","links":{"resolver":"https://pith.science/pith/EVZ5OXXO27TBMOUR24BEXGPPEC","bundle":"https://pith.science/pith/EVZ5OXXO27TBMOUR24BEXGPPEC/bundle.json","state":"https://pith.science/pith/EVZ5OXXO27TBMOUR24BEXGPPEC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EVZ5OXXO27TBMOUR24BEXGPPEC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:EVZ5OXXO27TBMOUR24BEXGPPEC","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":"73f9990be7bcc31ddf3519dc86460bb12e2d5f7088af7e483f756124d9464ba5","cross_cats_sorted":["hep-ex","physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2022-05-11T01:36:20Z","title_canon_sha256":"a8bec443ced4e0444e5c6a5e0d33f6ff9777706a0e465bee8849cc140f996751"},"schema_version":"1.0","source":{"id":"2205.05231","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2205.05231","created_at":"2026-07-05T04:46:14Z"},{"alias_kind":"arxiv_version","alias_value":"2205.05231v2","created_at":"2026-07-05T04:46:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2205.05231","created_at":"2026-07-05T04:46:14Z"},{"alias_kind":"pith_short_12","alias_value":"EVZ5OXXO27TB","created_at":"2026-07-05T04:46:14Z"},{"alias_kind":"pith_short_16","alias_value":"EVZ5OXXO27TBMOUR","created_at":"2026-07-05T04:46:14Z"},{"alias_kind":"pith_short_8","alias_value":"EVZ5OXXO","created_at":"2026-07-05T04:46:14Z"}],"graph_snapshots":[{"event_id":"sha256:772d741acf29c2e5741b5c2ecd1fca600903638978be17e4a731c3b794457c77","target":"graph","created_at":"2026-07-05T04:46:14Z","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/2205.05231/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A search for the neutrinoless quadruple beta decay of $^{136}$Xe was conducted with the liquid-xenon detector XMASS-I using $\\rm 327\\; kg \\times 800.0 \\; days$ of the exposure. The pulse shape discrimination based on the scintillation decay time constant which distinguishes $\\gamma$-rays including the signal and $\\beta$-rays was used to enhance the search sensitivity. No significant signal excess was observed from the energy spectrum fitting with precise background evaluation, and we set a lower limit of the half life of 3.7 $\\times$ 10$^{24}$ years at 90$\\%$ confidence level. This is the firs","authors_text":"A. Mason, A. Takeda, B. D. Xu, B. S. Yang, H.Ogawa, H. Sekiya, K. B. Lee, K. Fushimi, K.Hiraide, K.Ichimura, K. Kanzawa, K.Kobayashi, K. Martens, K. Masuda, K. Miuchi, K. Nishijima, K. Sato, M. K. Lee, M.Kobayashi, M. Nakahata, M. Yamashita, N.Kato, N. Y. Kim, R. Ishii, S. Moriyama, S. Nakamura, S. Tasaka, T. Suzuki, XMASS Collaboration : K.Abe, Y. D. Kim, Y. Fukuda, Y. H. Kim, Y. Itow, Y.Kishimoto, Y. Suzuki, Y. Takeuchi","cross_cats":["hep-ex","physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2022-05-11T01:36:20Z","title":"Search for neutrinoless quadruple beta decay of $^{136}$Xe in XMASS-I"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2205.05231","kind":"arxiv","version":2},"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:c01cf70d0782e9091eacdcb09d6a4324c08ae229b9e8f0806859703590418cbd","target":"record","created_at":"2026-07-05T04:46:14Z","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":"73f9990be7bcc31ddf3519dc86460bb12e2d5f7088af7e483f756124d9464ba5","cross_cats_sorted":["hep-ex","physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2022-05-11T01:36:20Z","title_canon_sha256":"a8bec443ced4e0444e5c6a5e0d33f6ff9777706a0e465bee8849cc140f996751"},"schema_version":"1.0","source":{"id":"2205.05231","kind":"arxiv","version":2}},"canonical_sha256":"2573d75eeed7e6163a91d7024b99ef208f7eb3376424562c7a54a4591ad3f5e7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2573d75eeed7e6163a91d7024b99ef208f7eb3376424562c7a54a4591ad3f5e7","first_computed_at":"2026-07-05T04:46:14.630783Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:46:14.630783Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/B/g0vrewlrqHJ50/TAtG4CjyJ6y6N+1Obhet/fHWsuIT52ZlsAJjoh0ukxIOZ7EEj9Fs9WTfmZV+oYagvu/AA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:46:14.631221Z","signed_message":"canonical_sha256_bytes"},"source_id":"2205.05231","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c01cf70d0782e9091eacdcb09d6a4324c08ae229b9e8f0806859703590418cbd","sha256:772d741acf29c2e5741b5c2ecd1fca600903638978be17e4a731c3b794457c77"],"state_sha256":"1f2c949fd756c3ac5cca4fe35c287496afab820bef2febe60fd592b6ffa95c5e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Lo08Kt1W86trlt5lRqi3Pb48GpgWTx/hEsWwZPYxb83f/InFu+MbJkvFj/abOSkLFkdFXqHvZUOkntTzi4rBCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T16:29:55.543365Z","bundle_sha256":"1ba7c540e90b90d422b59903d913b0bf56e7d1de6df9ea8f6b746f7cb582dcf7"}}