{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:BPCL2ZQV3MOP63TVPA5TMW2SUP","short_pith_number":"pith:BPCL2ZQV","canonical_record":{"source":{"id":"2101.02092","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2021-01-06T15:33:07Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"dfc09025d91c7c499cba616f0db7e0cc74cc0539bbda657b91398a2625f229f4","abstract_canon_sha256":"a11cb52ec3f264c88e4f2695a8af008bd419d5b35714c78ffd9d8f4d47963daa"},"schema_version":"1.0"},"canonical_sha256":"0bc4bd6615db1cff6e75783b365b52a3df106f7671019ebc79929ed1f9f1d481","source":{"kind":"arxiv","id":"2101.02092","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.02092","created_at":"2026-07-05T04:31:20Z"},{"alias_kind":"arxiv_version","alias_value":"2101.02092v2","created_at":"2026-07-05T04:31:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.02092","created_at":"2026-07-05T04:31:20Z"},{"alias_kind":"pith_short_12","alias_value":"BPCL2ZQV3MOP","created_at":"2026-07-05T04:31:20Z"},{"alias_kind":"pith_short_16","alias_value":"BPCL2ZQV3MOP63TV","created_at":"2026-07-05T04:31:20Z"},{"alias_kind":"pith_short_8","alias_value":"BPCL2ZQV","created_at":"2026-07-05T04:31:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:BPCL2ZQV3MOP63TVPA5TMW2SUP","target":"record","payload":{"canonical_record":{"source":{"id":"2101.02092","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2021-01-06T15:33:07Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"dfc09025d91c7c499cba616f0db7e0cc74cc0539bbda657b91398a2625f229f4","abstract_canon_sha256":"a11cb52ec3f264c88e4f2695a8af008bd419d5b35714c78ffd9d8f4d47963daa"},"schema_version":"1.0"},"canonical_sha256":"0bc4bd6615db1cff6e75783b365b52a3df106f7671019ebc79929ed1f9f1d481","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:31:20.405309Z","signature_b64":"flumCdCIffyIRyghBrgt6kq3aQrIzPIRG532BM4dT0R16TeAqtUMQ5XUQF3VzAJScJWEj1pRL82e8qh7c/fpAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0bc4bd6615db1cff6e75783b365b52a3df106f7671019ebc79929ed1f9f1d481","last_reissued_at":"2026-07-05T04:31:20.404884Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:31:20.404884Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2101.02092","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":"2026-07-05T04:31:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TWdy8Iitr9r9uTaJuJcHMYgSbBUAiGCizYXyiFsnPBgQiu8+s5HQNL2uTujxjeh43HS7aoOklKEltRq0IWN3AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-20T06:59:45.069470Z"},"content_sha256":"213c6a9366db5ab7c11dae07bbeefb2b0ecd65e6ad4d64432d86cf2dbe7518c3","schema_version":"1.0","event_id":"sha256:213c6a9366db5ab7c11dae07bbeefb2b0ecd65e6ad4d64432d86cf2dbe7518c3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:BPCL2ZQV3MOP63TVPA5TMW2SUP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Low scale Dirac leptogenesis and dark matter with observable $\\Delta N_{\\rm eff}$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"hep-ph","authors_text":"Debasish Borah, Devabrat Mahanta","submitted_at":"2021-01-06T15:33:07Z","abstract_excerpt":"We propose a gauged $B-L$ extension of the standard model (SM) where light neutrinos are of Dirac type by virtue of tiny Yukawa couplings with the SM Higgs. To achieve leptogenesis, we include additional heavy Majorana fermions without introducing any $B-L$ violation by two units. An additional scalar doublet with appropriate $B-L$ charge can allow heavy fermion coupling with the SM leptons so that out of equilibrium decay of the former can lead to generation of lepton asymmetry. Due to the $B-L$ gauge interactions of the decaying fermion, the criteria of successful Dirac leptogenesis can also"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.02092","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/2101.02092/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":"2026-07-05T04:31:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"imvZdhiDgSVBOLTHW9O98vwbUFBpKnz8CCGDvSpz52jAs1LK/GuI1mvP2sctuMNF5W8o51Z3vlq1hCamN00tCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-20T06:59:45.069844Z"},"content_sha256":"2a321b8990837daf3bf8041c6868d0337b2f5dc51a606c4f760744c52effa133","schema_version":"1.0","event_id":"sha256:2a321b8990837daf3bf8041c6868d0337b2f5dc51a606c4f760744c52effa133"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BPCL2ZQV3MOP63TVPA5TMW2SUP/bundle.json","state_url":"https://pith.science/pith/BPCL2ZQV3MOP63TVPA5TMW2SUP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BPCL2ZQV3MOP63TVPA5TMW2SUP/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":"2026-07-20T06:59:45Z","links":{"resolver":"https://pith.science/pith/BPCL2ZQV3MOP63TVPA5TMW2SUP","bundle":"https://pith.science/pith/BPCL2ZQV3MOP63TVPA5TMW2SUP/bundle.json","state":"https://pith.science/pith/BPCL2ZQV3MOP63TVPA5TMW2SUP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BPCL2ZQV3MOP63TVPA5TMW2SUP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:BPCL2ZQV3MOP63TVPA5TMW2SUP","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":"a11cb52ec3f264c88e4f2695a8af008bd419d5b35714c78ffd9d8f4d47963daa","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2021-01-06T15:33:07Z","title_canon_sha256":"dfc09025d91c7c499cba616f0db7e0cc74cc0539bbda657b91398a2625f229f4"},"schema_version":"1.0","source":{"id":"2101.02092","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.02092","created_at":"2026-07-05T04:31:20Z"},{"alias_kind":"arxiv_version","alias_value":"2101.02092v2","created_at":"2026-07-05T04:31:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.02092","created_at":"2026-07-05T04:31:20Z"},{"alias_kind":"pith_short_12","alias_value":"BPCL2ZQV3MOP","created_at":"2026-07-05T04:31:20Z"},{"alias_kind":"pith_short_16","alias_value":"BPCL2ZQV3MOP63TV","created_at":"2026-07-05T04:31:20Z"},{"alias_kind":"pith_short_8","alias_value":"BPCL2ZQV","created_at":"2026-07-05T04:31:20Z"}],"graph_snapshots":[{"event_id":"sha256:2a321b8990837daf3bf8041c6868d0337b2f5dc51a606c4f760744c52effa133","target":"graph","created_at":"2026-07-05T04:31:20Z","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/2101.02092/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We propose a gauged $B-L$ extension of the standard model (SM) where light neutrinos are of Dirac type by virtue of tiny Yukawa couplings with the SM Higgs. To achieve leptogenesis, we include additional heavy Majorana fermions without introducing any $B-L$ violation by two units. An additional scalar doublet with appropriate $B-L$ charge can allow heavy fermion coupling with the SM leptons so that out of equilibrium decay of the former can lead to generation of lepton asymmetry. Due to the $B-L$ gauge interactions of the decaying fermion, the criteria of successful Dirac leptogenesis can also","authors_text":"Debasish Borah, Devabrat Mahanta","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2021-01-06T15:33:07Z","title":"Low scale Dirac leptogenesis and dark matter with observable $\\Delta N_{\\rm eff}$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.02092","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":"sha256:213c6a9366db5ab7c11dae07bbeefb2b0ecd65e6ad4d64432d86cf2dbe7518c3","target":"record","created_at":"2026-07-05T04:31:20Z","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":"a11cb52ec3f264c88e4f2695a8af008bd419d5b35714c78ffd9d8f4d47963daa","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2021-01-06T15:33:07Z","title_canon_sha256":"dfc09025d91c7c499cba616f0db7e0cc74cc0539bbda657b91398a2625f229f4"},"schema_version":"1.0","source":{"id":"2101.02092","kind":"arxiv","version":2}},"canonical_sha256":"0bc4bd6615db1cff6e75783b365b52a3df106f7671019ebc79929ed1f9f1d481","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0bc4bd6615db1cff6e75783b365b52a3df106f7671019ebc79929ed1f9f1d481","first_computed_at":"2026-07-05T04:31:20.404884Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:31:20.404884Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"flumCdCIffyIRyghBrgt6kq3aQrIzPIRG532BM4dT0R16TeAqtUMQ5XUQF3VzAJScJWEj1pRL82e8qh7c/fpAA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:31:20.405309Z","signed_message":"canonical_sha256_bytes"},"source_id":"2101.02092","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:213c6a9366db5ab7c11dae07bbeefb2b0ecd65e6ad4d64432d86cf2dbe7518c3","sha256:2a321b8990837daf3bf8041c6868d0337b2f5dc51a606c4f760744c52effa133"],"state_sha256":"0f435719ecf96da832bb5af63a133ffeb8422a9bf1604a48f7b6b92de7524245"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZCgaetO0SybgUPIn0j52D9ADTH+XUV6xDx/nIeuCXWGMrIIixFk/hxPVRter6A3+wMg8gjnr3aRDmvPn2kgeDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-20T06:59:45.072019Z","bundle_sha256":"d94653ea3fdc7a0a8fb33b312d88f5ba64eac753ce5e1a6ff1eab0eea3ada85b"}}