{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:UTD6DVCZF7FPQ7MWPLY2CCTP7K","short_pith_number":"pith:UTD6DVCZ","schema_version":"1.0","canonical_sha256":"a4c7e1d4592fcaf87d967af1a10a6ffabd26c3dcad649bfdd87a9747c124044b","source":{"kind":"arxiv","id":"1503.04852","version":2},"attestation_state":"computed","paper":{"title":"Non-universal BBN bounds on electromagnetically decaying particles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.CO","authors_text":"Pasquale Dario Serpico, Vivian Poulin","submitted_at":"2015-03-16T21:04:25Z","abstract_excerpt":"In Poulin and Serpico [Phys. Rev. Lett. 114, 091101 (2015)] we have recently argued that when the energy of a photon injected in the primordial plasma falls below the pair-production threshold, the universality of the non-thermal photon spectrum from the standard theory of electromagnetic cascades onto a photon background breaks down. We showed that this could reopen or widen the parameter space for an exotic solution to the 'lithium problem'. Here we discuss another application, namely the impact that this has on non-thermal big bang nucleosynthesis constraints from 4He, 3He and 2H, using the"},"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":"1503.04852","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-03-16T21:04:25Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"fa7c7b53b5280c24de38539fbdd3db2d3c8baaeb98cb95ee77541fdbf62602dd","abstract_canon_sha256":"1a0d4db7244c9c0dad4b6e02c3629a5d8fd4c843bc34f6307ec5e2f528d04195"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:00:02.081795Z","signature_b64":"3C26uDJPMLTdkBI7GrKCzRJzL5L7PBBdYohu8QdMpb42FmI9zyFUsHepCeYhnq49ooueMvIXiqs4plCh1+s8AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a4c7e1d4592fcaf87d967af1a10a6ffabd26c3dcad649bfdd87a9747c124044b","last_reissued_at":"2026-05-18T02:00:02.081214Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:00:02.081214Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Non-universal BBN bounds on electromagnetically decaying particles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.CO","authors_text":"Pasquale Dario Serpico, Vivian Poulin","submitted_at":"2015-03-16T21:04:25Z","abstract_excerpt":"In Poulin and Serpico [Phys. Rev. Lett. 114, 091101 (2015)] we have recently argued that when the energy of a photon injected in the primordial plasma falls below the pair-production threshold, the universality of the non-thermal photon spectrum from the standard theory of electromagnetic cascades onto a photon background breaks down. We showed that this could reopen or widen the parameter space for an exotic solution to the 'lithium problem'. Here we discuss another application, namely the impact that this has on non-thermal big bang nucleosynthesis constraints from 4He, 3He and 2H, using the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.04852","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":""},"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":"1503.04852","created_at":"2026-05-18T02:00:02.081294+00:00"},{"alias_kind":"arxiv_version","alias_value":"1503.04852v2","created_at":"2026-05-18T02:00:02.081294+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.04852","created_at":"2026-05-18T02:00:02.081294+00:00"},{"alias_kind":"pith_short_12","alias_value":"UTD6DVCZF7FP","created_at":"2026-05-18T12:29:44.643036+00:00"},{"alias_kind":"pith_short_16","alias_value":"UTD6DVCZF7FPQ7MW","created_at":"2026-05-18T12:29:44.643036+00:00"},{"alias_kind":"pith_short_8","alias_value":"UTD6DVCZ","created_at":"2026-05-18T12:29:44.643036+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2604.01324","citing_title":"Bipartite Solution to the Lithium Problem","ref_index":79,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/UTD6DVCZF7FPQ7MWPLY2CCTP7K","json":"https://pith.science/pith/UTD6DVCZF7FPQ7MWPLY2CCTP7K.json","graph_json":"https://pith.science/api/pith-number/UTD6DVCZF7FPQ7MWPLY2CCTP7K/graph.json","events_json":"https://pith.science/api/pith-number/UTD6DVCZF7FPQ7MWPLY2CCTP7K/events.json","paper":"https://pith.science/paper/UTD6DVCZ"},"agent_actions":{"view_html":"https://pith.science/pith/UTD6DVCZF7FPQ7MWPLY2CCTP7K","download_json":"https://pith.science/pith/UTD6DVCZF7FPQ7MWPLY2CCTP7K.json","view_paper":"https://pith.science/paper/UTD6DVCZ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1503.04852&json=true","fetch_graph":"https://pith.science/api/pith-number/UTD6DVCZF7FPQ7MWPLY2CCTP7K/graph.json","fetch_events":"https://pith.science/api/pith-number/UTD6DVCZF7FPQ7MWPLY2CCTP7K/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/UTD6DVCZF7FPQ7MWPLY2CCTP7K/action/timestamp_anchor","attest_storage":"https://pith.science/pith/UTD6DVCZF7FPQ7MWPLY2CCTP7K/action/storage_attestation","attest_author":"https://pith.science/pith/UTD6DVCZF7FPQ7MWPLY2CCTP7K/action/author_attestation","sign_citation":"https://pith.science/pith/UTD6DVCZF7FPQ7MWPLY2CCTP7K/action/citation_signature","submit_replication":"https://pith.science/pith/UTD6DVCZF7FPQ7MWPLY2CCTP7K/action/replication_record"}},"created_at":"2026-05-18T02:00:02.081294+00:00","updated_at":"2026-05-18T02:00:02.081294+00:00"}