{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:MX7JG44PMPPKB7AG7NGJHXMNTP","short_pith_number":"pith:MX7JG44P","canonical_record":{"source":{"id":"2310.12614","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ex","submitted_at":"2023-10-19T09:45:30Z","cross_cats_sorted":[],"title_canon_sha256":"3cabcaf3c4e28930295e13386cd7ba0d3f04b741aed624985b44c53c23f06dbc","abstract_canon_sha256":"90bb8694df19d7f3c61f81c235689095ef6119b74a09d22711faa9f949df9197"},"schema_version":"1.0"},"canonical_sha256":"65fe93738f63dea0fc06fb4c93dd8d9bf2d0d7f58a499b142fd28fd156c082cb","source":{"kind":"arxiv","id":"2310.12614","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2310.12614","created_at":"2026-07-05T07:30:55Z"},{"alias_kind":"arxiv_version","alias_value":"2310.12614v3","created_at":"2026-07-05T07:30:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2310.12614","created_at":"2026-07-05T07:30:55Z"},{"alias_kind":"pith_short_12","alias_value":"MX7JG44PMPPK","created_at":"2026-07-05T07:30:55Z"},{"alias_kind":"pith_short_16","alias_value":"MX7JG44PMPPKB7AG","created_at":"2026-07-05T07:30:55Z"},{"alias_kind":"pith_short_8","alias_value":"MX7JG44P","created_at":"2026-07-05T07:30:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:MX7JG44PMPPKB7AG7NGJHXMNTP","target":"record","payload":{"canonical_record":{"source":{"id":"2310.12614","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ex","submitted_at":"2023-10-19T09:45:30Z","cross_cats_sorted":[],"title_canon_sha256":"3cabcaf3c4e28930295e13386cd7ba0d3f04b741aed624985b44c53c23f06dbc","abstract_canon_sha256":"90bb8694df19d7f3c61f81c235689095ef6119b74a09d22711faa9f949df9197"},"schema_version":"1.0"},"canonical_sha256":"65fe93738f63dea0fc06fb4c93dd8d9bf2d0d7f58a499b142fd28fd156c082cb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:30:55.672182Z","signature_b64":"3ScQKOMAywX2qGU8TmQGu/WPYluNnXahB4tzXxWXFAmWF6QIjIFYzqf1MKAI59wId5OfsOvYzaNDkqzPjnROCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"65fe93738f63dea0fc06fb4c93dd8d9bf2d0d7f58a499b142fd28fd156c082cb","last_reissued_at":"2026-07-05T07:30:55.671556Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:30:55.671556Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2310.12614","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:30:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lMEMi7z3pxE+dxFt4tMnVncK1j2L3c/tZngd6uU3b+8V/G+ZoQPXL1EkDjzIicNcXj+zkBrY0NcSKbyaVG7WCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T23:07:51.044952Z"},"content_sha256":"2f50a190f914d59fc0193e34d1ec6eac23e9d0b466a1523376e1413615a778df","schema_version":"1.0","event_id":"sha256:2f50a190f914d59fc0193e34d1ec6eac23e9d0b466a1523376e1413615a778df"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:MX7JG44PMPPKB7AG7NGJHXMNTP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A search for $\\mu^+\\to e^+\\gamma$ with the first dataset of the MEG II experiment","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A. Corvaglia, A. De Bari, A. Kolesnikov, A. Matsushita, A. M. Baldini, A. Ochi, A. Oya, A. Papa, A. Popov, A. Rozhdestvensky, A. Venturini, B. Vitali, C. Voena, D. N. Grigoriev, D. Nicol\\`o, D. Palo, E. G. Grandoni, F. Cei, F. Cuna, F. Gatti, F. Grancagnolo, F. Ignatov, F. Ikeda, F. Renga, G. Boca, G. Cavoto, G. Chiarello, G. Dal Maso, G.F. Tassielli, G. Gallucci, G. Signorelli, H. Benmansour, H. Nishiguchi, K. Ieki, K. Shimada, K. Toyoda, K. Yamamoto, K. Yanai, K. Yoshida, L. Ferrari Barusso, L. Galli, L. Gerritzen, M. Biasotti, M. Chiappini, M. De Gerone, MEG II Collaboration: K. Afanaciev, M. Francesconi, M. Grassi, M. Hildebrandt, M. Meucci, M. Nakao, M. Panareo, M. Rossella, M. Takahashi, M. Usami, N. Khomutov, N. Kravchuk, N. Kuchinskiy, P.-R. Kettle, P. Schwendimann, P. W. Cattaneo, R. Onda, S. Ban, S. Karpov, S. Kobayashi, S. Mihara, S. Ogawa, S. Ritt, T. Iwamoto, T. Libeiro, Toshinori Mori, T. Yonemoto, V. Baranov, V. Krylov, V. Malyshev, V. Pettinacci, W. Kyle, W. Molzon, W. Ootani, Y. Uchiyama, Yu.V. Yudin","submitted_at":"2023-10-19T09:45:30Z","abstract_excerpt":"The MEG II experiment, based at the Paul Scherrer Institut in Switzerland, reports the result of a search for the decay $\\mu^+\\to e^+\\gamma$ from data taken in the first physics run in 2021. No excess of events over the expected background is observed, yielding an upper limit on the branching ratio of B($\\mu^+\\to e^+\\gamma$) < $7.5 \\times 10^{-13}$ (90% C.L.). The combination of this result and the limit obtained by MEG gives B($\\mu^+\\to e^+\\gamma$) < $3.1 \\times 10^{-13}$ (90% C.L.), which is the most stringent limit to date. A ten-fold larger sample of data is being collected during the year"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2310.12614","kind":"arxiv","version":3},"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/2310.12614/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":"2026-07-05T07:30:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qvx6GKs+uhTu6ASpVoRC+3wkWljKjI2n39F87YDNHf514e4ip4CcpFWekAG1fAkCTmWxpScVWrL3lIPnSDkLAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T23:07:51.045637Z"},"content_sha256":"cad29259a029d319f9c017681b2e879341ffc4f7f1ad6151add518e8742dcf3a","schema_version":"1.0","event_id":"sha256:cad29259a029d319f9c017681b2e879341ffc4f7f1ad6151add518e8742dcf3a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MX7JG44PMPPKB7AG7NGJHXMNTP/bundle.json","state_url":"https://pith.science/pith/MX7JG44PMPPKB7AG7NGJHXMNTP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MX7JG44PMPPKB7AG7NGJHXMNTP/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":"2026-08-09T23:07:51Z","links":{"resolver":"https://pith.science/pith/MX7JG44PMPPKB7AG7NGJHXMNTP","bundle":"https://pith.science/pith/MX7JG44PMPPKB7AG7NGJHXMNTP/bundle.json","state":"https://pith.science/pith/MX7JG44PMPPKB7AG7NGJHXMNTP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MX7JG44PMPPKB7AG7NGJHXMNTP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:MX7JG44PMPPKB7AG7NGJHXMNTP","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":"90bb8694df19d7f3c61f81c235689095ef6119b74a09d22711faa9f949df9197","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ex","submitted_at":"2023-10-19T09:45:30Z","title_canon_sha256":"3cabcaf3c4e28930295e13386cd7ba0d3f04b741aed624985b44c53c23f06dbc"},"schema_version":"1.0","source":{"id":"2310.12614","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2310.12614","created_at":"2026-07-05T07:30:55Z"},{"alias_kind":"arxiv_version","alias_value":"2310.12614v3","created_at":"2026-07-05T07:30:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2310.12614","created_at":"2026-07-05T07:30:55Z"},{"alias_kind":"pith_short_12","alias_value":"MX7JG44PMPPK","created_at":"2026-07-05T07:30:55Z"},{"alias_kind":"pith_short_16","alias_value":"MX7JG44PMPPKB7AG","created_at":"2026-07-05T07:30:55Z"},{"alias_kind":"pith_short_8","alias_value":"MX7JG44P","created_at":"2026-07-05T07:30:55Z"}],"graph_snapshots":[{"event_id":"sha256:cad29259a029d319f9c017681b2e879341ffc4f7f1ad6151add518e8742dcf3a","target":"graph","created_at":"2026-07-05T07:30:55Z","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/2310.12614/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The MEG II experiment, based at the Paul Scherrer Institut in Switzerland, reports the result of a search for the decay $\\mu^+\\to e^+\\gamma$ from data taken in the first physics run in 2021. No excess of events over the expected background is observed, yielding an upper limit on the branching ratio of B($\\mu^+\\to e^+\\gamma$) < $7.5 \\times 10^{-13}$ (90% C.L.). The combination of this result and the limit obtained by MEG gives B($\\mu^+\\to e^+\\gamma$) < $3.1 \\times 10^{-13}$ (90% C.L.), which is the most stringent limit to date. A ten-fold larger sample of data is being collected during the year","authors_text":"A. Corvaglia, A. De Bari, A. Kolesnikov, A. Matsushita, A. M. Baldini, A. Ochi, A. Oya, A. Papa, A. Popov, A. Rozhdestvensky, A. Venturini, B. Vitali, C. Voena, D. N. Grigoriev, D. Nicol\\`o, D. Palo, E. G. Grandoni, F. Cei, F. Cuna, F. Gatti, F. Grancagnolo, F. Ignatov, F. Ikeda, F. Renga, G. Boca, G. Cavoto, G. Chiarello, G. Dal Maso, G.F. Tassielli, G. Gallucci, G. Signorelli, H. Benmansour, H. Nishiguchi, K. Ieki, K. Shimada, K. Toyoda, K. Yamamoto, K. Yanai, K. Yoshida, L. Ferrari Barusso, L. Galli, L. Gerritzen, M. Biasotti, M. Chiappini, M. De Gerone, MEG II Collaboration: K. Afanaciev, M. Francesconi, M. Grassi, M. Hildebrandt, M. Meucci, M. Nakao, M. Panareo, M. Rossella, M. Takahashi, M. Usami, N. Khomutov, N. Kravchuk, N. Kuchinskiy, P.-R. Kettle, P. Schwendimann, P. W. Cattaneo, R. Onda, S. Ban, S. Karpov, S. Kobayashi, S. Mihara, S. Ogawa, S. Ritt, T. Iwamoto, T. Libeiro, Toshinori Mori, T. Yonemoto, V. Baranov, V. Krylov, V. Malyshev, V. Pettinacci, W. Kyle, W. Molzon, W. Ootani, Y. Uchiyama, Yu.V. Yudin","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ex","submitted_at":"2023-10-19T09:45:30Z","title":"A search for $\\mu^+\\to e^+\\gamma$ with the first dataset of the MEG II experiment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2310.12614","kind":"arxiv","version":3},"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":"sha256:2f50a190f914d59fc0193e34d1ec6eac23e9d0b466a1523376e1413615a778df","target":"record","created_at":"2026-07-05T07:30:55Z","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":"90bb8694df19d7f3c61f81c235689095ef6119b74a09d22711faa9f949df9197","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ex","submitted_at":"2023-10-19T09:45:30Z","title_canon_sha256":"3cabcaf3c4e28930295e13386cd7ba0d3f04b741aed624985b44c53c23f06dbc"},"schema_version":"1.0","source":{"id":"2310.12614","kind":"arxiv","version":3}},"canonical_sha256":"65fe93738f63dea0fc06fb4c93dd8d9bf2d0d7f58a499b142fd28fd156c082cb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"65fe93738f63dea0fc06fb4c93dd8d9bf2d0d7f58a499b142fd28fd156c082cb","first_computed_at":"2026-07-05T07:30:55.671556Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:30:55.671556Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3ScQKOMAywX2qGU8TmQGu/WPYluNnXahB4tzXxWXFAmWF6QIjIFYzqf1MKAI59wId5OfsOvYzaNDkqzPjnROCw==","signature_status":"signed_v1","signed_at":"2026-07-05T07:30:55.672182Z","signed_message":"canonical_sha256_bytes"},"source_id":"2310.12614","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2f50a190f914d59fc0193e34d1ec6eac23e9d0b466a1523376e1413615a778df","sha256:cad29259a029d319f9c017681b2e879341ffc4f7f1ad6151add518e8742dcf3a"],"state_sha256":"895f9cb5a9639044d40fad6e38b46989a7bcc48446513b6adb76bbde23fba93f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AFHtm2qHGp2fHxglV43YW8CrqfscN4J8mybXxxN9HfIPUZfff1v921fltkgzEqalltoY40oKKwfq+0OIU3+NDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T23:07:51.050533Z","bundle_sha256":"d6fb2796aa8f5533977362a6ad29a1c6233d9071ad66aad9e73519c65c28b537"}}