{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:H6UFBDRLLUYUQPEYLFMQRJMUVR","short_pith_number":"pith:H6UFBDRL","schema_version":"1.0","canonical_sha256":"3fa8508e2b5d31483c98595908a594ac4fb16eca7a64e0559879c85707b6ca22","source":{"kind":"arxiv","id":"2311.04974","version":2},"attestation_state":"computed","paper":{"title":"Dark Radiation from the Primordial Thermal Bath in Momentum Space","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"hep-ph","authors_text":"Alessandro Lenoci, Fazlollah Hajkarim, Francesco D'Eramo","submitted_at":"2023-11-08T19:00:04Z","abstract_excerpt":"Motivated by the stunning projections for future CMB surveys, we evaluate the amount of dark radiation produced in the early Universe by two-body decays or binary scatterings with thermal bath particles via a rigorous analysis in momentum space. We track the evolution of the dark radiation phase space distribution, and we use the asymptotic solution to evaluate the amount of additional relativistic energy density parameterized in terms of an effective number of additional neutrino species $\\Delta N_{\\rm eff}$. Our approach allows for studying light particles that never reach equilibrium across"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2311.04974","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2023-11-08T19:00:04Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"c8f371f95e6e22c1f0e587c6e818ee6425d8a59255a10494c53d5208da464218","abstract_canon_sha256":"e308404bf8fddf1a0e5d36f556d16045838a535f695125cc23dbca88cfe7a9e1"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:53:49.010923Z","signature_b64":"Ldco0EKNFcWHzjjnY3+LntXyMXboSZO7NG+JgoKLUmYY4GUL0pQlRq6IGuG9oqV20Vgx4r9QHR8jvXOuxrm8AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3fa8508e2b5d31483c98595908a594ac4fb16eca7a64e0559879c85707b6ca22","last_reissued_at":"2026-07-05T07:53:49.010477Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:53:49.010477Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Dark Radiation from the Primordial Thermal Bath in Momentum Space","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"hep-ph","authors_text":"Alessandro Lenoci, Fazlollah Hajkarim, Francesco D'Eramo","submitted_at":"2023-11-08T19:00:04Z","abstract_excerpt":"Motivated by the stunning projections for future CMB surveys, we evaluate the amount of dark radiation produced in the early Universe by two-body decays or binary scatterings with thermal bath particles via a rigorous analysis in momentum space. We track the evolution of the dark radiation phase space distribution, and we use the asymptotic solution to evaluate the amount of additional relativistic energy density parameterized in terms of an effective number of additional neutrino species $\\Delta N_{\\rm eff}$. Our approach allows for studying light particles that never reach equilibrium across"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2311.04974","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/2311.04974/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2311.04974","created_at":"2026-07-05T07:53:49.010539+00:00"},{"alias_kind":"arxiv_version","alias_value":"2311.04974v2","created_at":"2026-07-05T07:53:49.010539+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2311.04974","created_at":"2026-07-05T07:53:49.010539+00:00"},{"alias_kind":"pith_short_12","alias_value":"H6UFBDRLLUYU","created_at":"2026-07-05T07:53:49.010539+00:00"},{"alias_kind":"pith_short_16","alias_value":"H6UFBDRLLUYUQPEY","created_at":"2026-07-05T07:53:49.010539+00:00"},{"alias_kind":"pith_short_8","alias_value":"H6UFBDRL","created_at":"2026-07-05T07:53:49.010539+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2511.07511","citing_title":"Seasons of Dark Matter Freeze-In Shaped by the Weather of the Early Universe","ref_index":80,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/H6UFBDRLLUYUQPEYLFMQRJMUVR","json":"https://pith.science/pith/H6UFBDRLLUYUQPEYLFMQRJMUVR.json","graph_json":"https://pith.science/api/pith-number/H6UFBDRLLUYUQPEYLFMQRJMUVR/graph.json","events_json":"https://pith.science/api/pith-number/H6UFBDRLLUYUQPEYLFMQRJMUVR/events.json","paper":"https://pith.science/paper/H6UFBDRL"},"agent_actions":{"view_html":"https://pith.science/pith/H6UFBDRLLUYUQPEYLFMQRJMUVR","download_json":"https://pith.science/pith/H6UFBDRLLUYUQPEYLFMQRJMUVR.json","view_paper":"https://pith.science/paper/H6UFBDRL","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2311.04974&json=true","fetch_graph":"https://pith.science/api/pith-number/H6UFBDRLLUYUQPEYLFMQRJMUVR/graph.json","fetch_events":"https://pith.science/api/pith-number/H6UFBDRLLUYUQPEYLFMQRJMUVR/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/H6UFBDRLLUYUQPEYLFMQRJMUVR/action/timestamp_anchor","attest_storage":"https://pith.science/pith/H6UFBDRLLUYUQPEYLFMQRJMUVR/action/storage_attestation","attest_author":"https://pith.science/pith/H6UFBDRLLUYUQPEYLFMQRJMUVR/action/author_attestation","sign_citation":"https://pith.science/pith/H6UFBDRLLUYUQPEYLFMQRJMUVR/action/citation_signature","submit_replication":"https://pith.science/pith/H6UFBDRLLUYUQPEYLFMQRJMUVR/action/replication_record"}},"created_at":"2026-07-05T07:53:49.010539+00:00","updated_at":"2026-07-05T07:53:49.010539+00:00"}