{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:GK6XRARJG3HVKCHFADCO3KE2VG","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":"1dd4b7a7d29725c0ccb2c5d7ffc7cac3cfe54185e07317052339abf3c154cfbe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-08-09T21:36:35Z","title_canon_sha256":"581376e105c76270bb1070889c4ed8829f6cd8dd711e1e462b63c88298ff3753"},"schema_version":"1.0","source":{"id":"1808.03352","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.03352","created_at":"2026-05-17T23:54:43Z"},{"alias_kind":"arxiv_version","alias_value":"1808.03352v1","created_at":"2026-05-17T23:54:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.03352","created_at":"2026-05-17T23:54:43Z"},{"alias_kind":"pith_short_12","alias_value":"GK6XRARJG3HV","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GK6XRARJG3HVKCHF","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GK6XRARJ","created_at":"2026-05-18T12:32:25Z"}],"graph_snapshots":[{"event_id":"sha256:9287738ce903a0dead86028d3c6d5002d310ab0edbcde38856c8a4391e649232","target":"graph","created_at":"2026-05-17T23:54:43Z","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":"We propose a new extension of the Standard Model by a $U(1)_{B-L}$ gauge symmetry in which the anomalies are canceled by two right-handed neutrinos plus four chiral fermions with fractional B-L charges. Two scalar fields that break the B-L symmetry and give masses to the new fermions are also required. After symmetry breaking, two neutrinos acquire Majorana masses via the seesaw mechanism leaving a massless neutrino in the spectrum. Additionally, the other new fermions arrange themselves into two Dirac particles, both of which are automatically stable and contribute to the observed dark matter","authors_text":"Carlos Yaguna, Diego Restrepo, Nicolas Bernal, Oscar Zapata","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-08-09T21:36:35Z","title":"Two-component dark matter and a massless neutrino in a new B-L model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.03352","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":"sha256:543e31029bbc946e4095f9d5a1f1cdea41cd6ff90d74ee10a77d810df13bd51d","target":"record","created_at":"2026-05-17T23:54:43Z","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":"1dd4b7a7d29725c0ccb2c5d7ffc7cac3cfe54185e07317052339abf3c154cfbe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-08-09T21:36:35Z","title_canon_sha256":"581376e105c76270bb1070889c4ed8829f6cd8dd711e1e462b63c88298ff3753"},"schema_version":"1.0","source":{"id":"1808.03352","kind":"arxiv","version":1}},"canonical_sha256":"32bd78822936cf5508e500c4eda89aa989a734b3193bc284e3b86a09765be290","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"32bd78822936cf5508e500c4eda89aa989a734b3193bc284e3b86a09765be290","first_computed_at":"2026-05-17T23:54:43.621189Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:54:43.621189Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Kc/WaALPVOypmzKSGBJZqQGtNVOUyim0M4g+n89gs5pFCrSEVYPiZvklCWojJvdjad4EgNsMtbPxrIscGDs8CA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:54:43.621847Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.03352","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:543e31029bbc946e4095f9d5a1f1cdea41cd6ff90d74ee10a77d810df13bd51d","sha256:9287738ce903a0dead86028d3c6d5002d310ab0edbcde38856c8a4391e649232"],"state_sha256":"890ae822adcf1abdacea1bf1ff57c71c1f9b1a8713c519ed0c400796c682ae14"}