{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:MTN2QAQARF4TQT25VOXOOMI2OB","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":"730d6a3c03a7f26717291c85edcad6afb000785d2cb7c4cc12e59652131fc20a","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-09-15T17:01:40Z","title_canon_sha256":"dd854c8ee90827da84bfa010bcb5e60d7db6e32ea3aaf6b66c632dab90e1ff2e"},"schema_version":"1.0","source":{"id":"1409.4330","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.4330","created_at":"2026-05-18T02:29:08Z"},{"alias_kind":"arxiv_version","alias_value":"1409.4330v2","created_at":"2026-05-18T02:29:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.4330","created_at":"2026-05-18T02:29:08Z"},{"alias_kind":"pith_short_12","alias_value":"MTN2QAQARF4T","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_16","alias_value":"MTN2QAQARF4TQT25","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_8","alias_value":"MTN2QAQA","created_at":"2026-05-18T12:28:38Z"}],"graph_snapshots":[{"event_id":"sha256:e68c1109ad0c2194d50b17cb37397b636102cccc105f7efc3bfd8aed78ec914f","target":"graph","created_at":"2026-05-18T02:29:08Z","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":"Sterile neutrinos with a mass of a few keV can serve as cosmological warm dark matter. We study the production of keV sterile neutrinos in the early universe from the decay of a frozen-in scalar. Previous studies focused on heavy frozen-in scalars with masses above the Higgs mass leading to a hot spectrum for sterile neutrinos with masses below 8-10 keV. Motivated by the recent hints for an X-ray line at 3.55 keV, we extend the analysis to lighter frozen-in scalars, which allow for a cooler spectrum. Below the electroweak phase transition, several qualitatively new channels start contributing.","authors_text":"Adisorn Adulpravitchai, Michael A. Schmidt","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-09-15T17:01:40Z","title":"A Fresh Look at keV Sterile Neutrino Dark Matter from Frozen-In Scalars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.4330","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":"sha256:29901b49355633e55da5f32a6c8d0b83fe0f51455a005bf85d56ca28fa317c60","target":"record","created_at":"2026-05-18T02:29:08Z","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":"730d6a3c03a7f26717291c85edcad6afb000785d2cb7c4cc12e59652131fc20a","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-09-15T17:01:40Z","title_canon_sha256":"dd854c8ee90827da84bfa010bcb5e60d7db6e32ea3aaf6b66c632dab90e1ff2e"},"schema_version":"1.0","source":{"id":"1409.4330","kind":"arxiv","version":2}},"canonical_sha256":"64dba802008979384f5dabaee7311a705d34f55d5a86a99c941389ce6702fe87","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"64dba802008979384f5dabaee7311a705d34f55d5a86a99c941389ce6702fe87","first_computed_at":"2026-05-18T02:29:08.219750Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:29:08.219750Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GtdPOJvoWjKiYI0DGlOuS5VqY3Rz1y3hRte9Cqqm2er5wBB49wb9FgIDAeGDvP5bhzUWwCF1xJS9DXtOt6UdDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:29:08.220203Z","signed_message":"canonical_sha256_bytes"},"source_id":"1409.4330","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:29901b49355633e55da5f32a6c8d0b83fe0f51455a005bf85d56ca28fa317c60","sha256:e68c1109ad0c2194d50b17cb37397b636102cccc105f7efc3bfd8aed78ec914f"],"state_sha256":"88dbb0abfab836c8f61a644a487a74d450eedd8edaa95049ac95c99225983897"}