{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:56DBMZ3YTWTHCAD5EISYFJXJDD","short_pith_number":"pith:56DBMZ3Y","canonical_record":{"source":{"id":"2605.28275","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-05-27T10:20:23Z","cross_cats_sorted":["astro-ph.CO","hep-ex"],"title_canon_sha256":"c07fb37f90b3486eb249768a117784895ef2d1c861ac6772248d3880bb475b50","abstract_canon_sha256":"d6687a32fedb4b887eb309b2b35f782fcf8b0639ffcbe1aeb009bc511e8c0d2c"},"schema_version":"1.0"},"canonical_sha256":"ef861667789da671007d222582a6e918d8c83fbede3d146c968acef9f29e7e14","source":{"kind":"arxiv","id":"2605.28275","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.28275","created_at":"2026-05-28T01:05:04Z"},{"alias_kind":"arxiv_version","alias_value":"2605.28275v1","created_at":"2026-05-28T01:05:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.28275","created_at":"2026-05-28T01:05:04Z"},{"alias_kind":"pith_short_12","alias_value":"56DBMZ3YTWTH","created_at":"2026-05-28T01:05:04Z"},{"alias_kind":"pith_short_16","alias_value":"56DBMZ3YTWTHCAD5","created_at":"2026-05-28T01:05:04Z"},{"alias_kind":"pith_short_8","alias_value":"56DBMZ3Y","created_at":"2026-05-28T01:05:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:56DBMZ3YTWTHCAD5EISYFJXJDD","target":"record","payload":{"canonical_record":{"source":{"id":"2605.28275","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-05-27T10:20:23Z","cross_cats_sorted":["astro-ph.CO","hep-ex"],"title_canon_sha256":"c07fb37f90b3486eb249768a117784895ef2d1c861ac6772248d3880bb475b50","abstract_canon_sha256":"d6687a32fedb4b887eb309b2b35f782fcf8b0639ffcbe1aeb009bc511e8c0d2c"},"schema_version":"1.0"},"canonical_sha256":"ef861667789da671007d222582a6e918d8c83fbede3d146c968acef9f29e7e14","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-28T01:05:04.878634Z","signature_b64":"YRM9XSIkOe5LGOEipeUQUhMFaObRRdNuG3aanxGhQ/Vsgfegk3fQD5KMuT1MnOTmgAgKFpddqE0GtccAktPyCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ef861667789da671007d222582a6e918d8c83fbede3d146c968acef9f29e7e14","last_reissued_at":"2026-05-28T01:05:04.878078Z","signature_status":"signed_v1","first_computed_at":"2026-05-28T01:05:04.878078Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.28275","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":"2026-05-28T01:05:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gYrUz/1r1FVcNX7zYSBy9yo/O/jg53Gc6TiiZv+jBgkutN3IksX2zeF59kQCh2hclaIOb+lkdjdx6acmbwttAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T14:16:02.135614Z"},"content_sha256":"719534ec01525f536c93772a068bd09d1627ed1f7ff1d066d963757800e75849","schema_version":"1.0","event_id":"sha256:719534ec01525f536c93772a068bd09d1627ed1f7ff1d066d963757800e75849"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:56DBMZ3YTWTHCAD5EISYFJXJDD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dark Matter Interpretation of the Super-Kamiokande Antineutrino Excess in $\\mathrm{U}(1)_{L_\\mu-L_\\tau}$ model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-ex"],"primary_cat":"hep-ph","authors_text":"Motoi Endo, Tenta Tsuji, Yushi Mura","submitted_at":"2026-05-27T10:20:23Z","abstract_excerpt":"Recent Super-Kamiokande analyses of the diffuse supernova neutrino background, based on data across all SK phases, indicate a mild preference over the zero-DSNB hypothesis at the level of about $2.3\\sigma$ with electron-like antineutrino events at $E_{\\bar{\\nu}_e} \\simeq 20\\,\\mathrm{MeV}$. We investigate whether this excess can be explained by MeV-scale dark matter annihilation into neutrinos in a $\\mathrm{U}(1)_{L_\\mu - L_\\tau}$ model. The dark matter is a Dirac fermion with $m_\\chi \\simeq 22\\,\\mathrm{MeV}$ that annihilates via a light $Z'$ mediator into $\\nu_\\mu \\bar{\\nu}_\\mu$ and $\\nu_\\tau "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.28275","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/2605.28275/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":"2026-05-28T01:05:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ad7aPM/PwWPgm/9Xaxx2dp5U47Np9SOaHqSBpD0Nxn2PYJ28YxnMIrpfkty7ixazGTVOdw4Po0zXBec/HrTdAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T14:16:02.135999Z"},"content_sha256":"cf62e0928fb6e1462c5ff107713f06d81d9f35df3cde553911c39f5cd2245068","schema_version":"1.0","event_id":"sha256:cf62e0928fb6e1462c5ff107713f06d81d9f35df3cde553911c39f5cd2245068"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/56DBMZ3YTWTHCAD5EISYFJXJDD/bundle.json","state_url":"https://pith.science/pith/56DBMZ3YTWTHCAD5EISYFJXJDD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/56DBMZ3YTWTHCAD5EISYFJXJDD/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":"2026-06-09T14:16:02Z","links":{"resolver":"https://pith.science/pith/56DBMZ3YTWTHCAD5EISYFJXJDD","bundle":"https://pith.science/pith/56DBMZ3YTWTHCAD5EISYFJXJDD/bundle.json","state":"https://pith.science/pith/56DBMZ3YTWTHCAD5EISYFJXJDD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/56DBMZ3YTWTHCAD5EISYFJXJDD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:56DBMZ3YTWTHCAD5EISYFJXJDD","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":"d6687a32fedb4b887eb309b2b35f782fcf8b0639ffcbe1aeb009bc511e8c0d2c","cross_cats_sorted":["astro-ph.CO","hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-05-27T10:20:23Z","title_canon_sha256":"c07fb37f90b3486eb249768a117784895ef2d1c861ac6772248d3880bb475b50"},"schema_version":"1.0","source":{"id":"2605.28275","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.28275","created_at":"2026-05-28T01:05:04Z"},{"alias_kind":"arxiv_version","alias_value":"2605.28275v1","created_at":"2026-05-28T01:05:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.28275","created_at":"2026-05-28T01:05:04Z"},{"alias_kind":"pith_short_12","alias_value":"56DBMZ3YTWTH","created_at":"2026-05-28T01:05:04Z"},{"alias_kind":"pith_short_16","alias_value":"56DBMZ3YTWTHCAD5","created_at":"2026-05-28T01:05:04Z"},{"alias_kind":"pith_short_8","alias_value":"56DBMZ3Y","created_at":"2026-05-28T01:05:04Z"}],"graph_snapshots":[{"event_id":"sha256:cf62e0928fb6e1462c5ff107713f06d81d9f35df3cde553911c39f5cd2245068","target":"graph","created_at":"2026-05-28T01:05:04Z","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/2605.28275/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recent Super-Kamiokande analyses of the diffuse supernova neutrino background, based on data across all SK phases, indicate a mild preference over the zero-DSNB hypothesis at the level of about $2.3\\sigma$ with electron-like antineutrino events at $E_{\\bar{\\nu}_e} \\simeq 20\\,\\mathrm{MeV}$. We investigate whether this excess can be explained by MeV-scale dark matter annihilation into neutrinos in a $\\mathrm{U}(1)_{L_\\mu - L_\\tau}$ model. The dark matter is a Dirac fermion with $m_\\chi \\simeq 22\\,\\mathrm{MeV}$ that annihilates via a light $Z'$ mediator into $\\nu_\\mu \\bar{\\nu}_\\mu$ and $\\nu_\\tau ","authors_text":"Motoi Endo, Tenta Tsuji, Yushi Mura","cross_cats":["astro-ph.CO","hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-05-27T10:20:23Z","title":"Dark Matter Interpretation of the Super-Kamiokande Antineutrino Excess in $\\mathrm{U}(1)_{L_\\mu-L_\\tau}$ model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.28275","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":"sha256:719534ec01525f536c93772a068bd09d1627ed1f7ff1d066d963757800e75849","target":"record","created_at":"2026-05-28T01:05:04Z","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":"d6687a32fedb4b887eb309b2b35f782fcf8b0639ffcbe1aeb009bc511e8c0d2c","cross_cats_sorted":["astro-ph.CO","hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-05-27T10:20:23Z","title_canon_sha256":"c07fb37f90b3486eb249768a117784895ef2d1c861ac6772248d3880bb475b50"},"schema_version":"1.0","source":{"id":"2605.28275","kind":"arxiv","version":1}},"canonical_sha256":"ef861667789da671007d222582a6e918d8c83fbede3d146c968acef9f29e7e14","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ef861667789da671007d222582a6e918d8c83fbede3d146c968acef9f29e7e14","first_computed_at":"2026-05-28T01:05:04.878078Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-28T01:05:04.878078Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YRM9XSIkOe5LGOEipeUQUhMFaObRRdNuG3aanxGhQ/Vsgfegk3fQD5KMuT1MnOTmgAgKFpddqE0GtccAktPyCQ==","signature_status":"signed_v1","signed_at":"2026-05-28T01:05:04.878634Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.28275","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:719534ec01525f536c93772a068bd09d1627ed1f7ff1d066d963757800e75849","sha256:cf62e0928fb6e1462c5ff107713f06d81d9f35df3cde553911c39f5cd2245068"],"state_sha256":"89ae0b07775085b9a951d008f59292d320dfa60e1c38430f8e82c9a99476ba2c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HMJU2H1WqLX5OJfQf05La24XGfdkzWOzIc4v4F5ON4kvZBCgpmg4eHh1aDPyS0LGzcWUR5KWsMNhUjwaaEyzBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T14:16:02.138081Z","bundle_sha256":"60c570b78a4ecda0cf398aeee6988dc08b15a20292ee3209e19282fa465eff84"}}