{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:7TVEMLPT2BKLYGJB4QXOANEW2F","short_pith_number":"pith:7TVEMLPT","canonical_record":{"source":{"id":"2303.00778","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"hep-ph","submitted_at":"2023-03-01T19:05:41Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"20e02360f4ed0857b8f5c3d988040c50aea0b1a9a7f56903cf1e744e6ffb4589","abstract_canon_sha256":"77bee58c763e6a6024a991db213de819071cc7d3b65d7b4c82b3e823d3550203"},"schema_version":"1.0"},"canonical_sha256":"fcea462df3d054bc1921e42ee03496d142dad7ddb531ebd5dbf6a488f5cbb4c2","source":{"kind":"arxiv","id":"2303.00778","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.00778","created_at":"2026-07-05T06:42:04Z"},{"alias_kind":"arxiv_version","alias_value":"2303.00778v2","created_at":"2026-07-05T06:42:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.00778","created_at":"2026-07-05T06:42:04Z"},{"alias_kind":"pith_short_12","alias_value":"7TVEMLPT2BKL","created_at":"2026-07-05T06:42:04Z"},{"alias_kind":"pith_short_16","alias_value":"7TVEMLPT2BKLYGJB","created_at":"2026-07-05T06:42:04Z"},{"alias_kind":"pith_short_8","alias_value":"7TVEMLPT","created_at":"2026-07-05T06:42:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:7TVEMLPT2BKLYGJB4QXOANEW2F","target":"record","payload":{"canonical_record":{"source":{"id":"2303.00778","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"hep-ph","submitted_at":"2023-03-01T19:05:41Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"20e02360f4ed0857b8f5c3d988040c50aea0b1a9a7f56903cf1e744e6ffb4589","abstract_canon_sha256":"77bee58c763e6a6024a991db213de819071cc7d3b65d7b4c82b3e823d3550203"},"schema_version":"1.0"},"canonical_sha256":"fcea462df3d054bc1921e42ee03496d142dad7ddb531ebd5dbf6a488f5cbb4c2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:42:04.165452Z","signature_b64":"4pO25DNUeAvCvENTf3Pja4CfHC7nAJQ1kktLtPvxsD0E7flLo7VRKOq8rzi42dcC4WaATB3wz0aN+DHGiXETDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fcea462df3d054bc1921e42ee03496d142dad7ddb531ebd5dbf6a488f5cbb4c2","last_reissued_at":"2026-07-05T06:42:04.165025Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:42:04.165025Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2303.00778","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":"2026-07-05T06:42:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Bxi0gc1DdF42uLuE2OhCdrstRk26Ajad+TLU39VAm+13OSiIX05eFOkPOKKvYACt6eXVXv3a4L2YX48XTj8tBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T02:53:18.133077Z"},"content_sha256":"784b70002e352c92a1e9c3912fc23ffd51ca36190cbb5e45bb52224ecd3b5b40","schema_version":"1.0","event_id":"sha256:784b70002e352c92a1e9c3912fc23ffd51ca36190cbb5e45bb52224ecd3b5b40"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:7TVEMLPT2BKLYGJB4QXOANEW2F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Stellar limits on scalars from electron-nucleus bremsstrahlung","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"hep-ph","authors_text":"Andrea Caputo, Edoardo Vitagliano, Georg Raffelt, Salvatore Bottaro","submitted_at":"2023-03-01T19:05:41Z","abstract_excerpt":"We revisit stellar energy-loss bounds on the Yukawa couplings $g_{\\rm B,L}$ of baryophilic and leptophilic scalars $\\phi$. The white-dwarf luminosity function yields $g_{\\rm B}\\lesssim 7 \\times 10^{-13}$ and $g_{\\rm L}\\lesssim 4 \\times 10^{-16}$, based on bremsstrahlung from ${}^{12}{\\rm C}$ and ${}^{16}{\\rm O}$ collisions with electrons. In models with a Higgs portal, this also implies a bound on the scalar-Higgs mixing angle $\\sin \\theta \\lesssim 2 \\times 10^{-10}$. Our new bounds apply for $m_\\phi\\lesssim {\\rm 1~keV}$ and are among the most restrictive ones, whereas for $m_\\phi\\lesssim 0.5\\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.00778","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/2303.00778/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":"2026-07-05T06:42:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"71VjiqEba5TFaE3UeF1vo7tN1BRxgM46WQyzwFtfT5wHG9NKXQHf6ZWKRI78qsXD36HQzoWfBeVGmUcjawzeBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T02:53:18.134033Z"},"content_sha256":"dbbf0938f976766491cbbf7ef22ed27648b9c5f823ad5642d7070748e1ca697e","schema_version":"1.0","event_id":"sha256:dbbf0938f976766491cbbf7ef22ed27648b9c5f823ad5642d7070748e1ca697e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7TVEMLPT2BKLYGJB4QXOANEW2F/bundle.json","state_url":"https://pith.science/pith/7TVEMLPT2BKLYGJB4QXOANEW2F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7TVEMLPT2BKLYGJB4QXOANEW2F/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":"2026-08-04T02:53:18Z","links":{"resolver":"https://pith.science/pith/7TVEMLPT2BKLYGJB4QXOANEW2F","bundle":"https://pith.science/pith/7TVEMLPT2BKLYGJB4QXOANEW2F/bundle.json","state":"https://pith.science/pith/7TVEMLPT2BKLYGJB4QXOANEW2F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7TVEMLPT2BKLYGJB4QXOANEW2F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:7TVEMLPT2BKLYGJB4QXOANEW2F","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":"77bee58c763e6a6024a991db213de819071cc7d3b65d7b4c82b3e823d3550203","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"hep-ph","submitted_at":"2023-03-01T19:05:41Z","title_canon_sha256":"20e02360f4ed0857b8f5c3d988040c50aea0b1a9a7f56903cf1e744e6ffb4589"},"schema_version":"1.0","source":{"id":"2303.00778","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.00778","created_at":"2026-07-05T06:42:04Z"},{"alias_kind":"arxiv_version","alias_value":"2303.00778v2","created_at":"2026-07-05T06:42:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.00778","created_at":"2026-07-05T06:42:04Z"},{"alias_kind":"pith_short_12","alias_value":"7TVEMLPT2BKL","created_at":"2026-07-05T06:42:04Z"},{"alias_kind":"pith_short_16","alias_value":"7TVEMLPT2BKLYGJB","created_at":"2026-07-05T06:42:04Z"},{"alias_kind":"pith_short_8","alias_value":"7TVEMLPT","created_at":"2026-07-05T06:42:04Z"}],"graph_snapshots":[{"event_id":"sha256:dbbf0938f976766491cbbf7ef22ed27648b9c5f823ad5642d7070748e1ca697e","target":"graph","created_at":"2026-07-05T06:42:04Z","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/2303.00778/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We revisit stellar energy-loss bounds on the Yukawa couplings $g_{\\rm B,L}$ of baryophilic and leptophilic scalars $\\phi$. The white-dwarf luminosity function yields $g_{\\rm B}\\lesssim 7 \\times 10^{-13}$ and $g_{\\rm L}\\lesssim 4 \\times 10^{-16}$, based on bremsstrahlung from ${}^{12}{\\rm C}$ and ${}^{16}{\\rm O}$ collisions with electrons. In models with a Higgs portal, this also implies a bound on the scalar-Higgs mixing angle $\\sin \\theta \\lesssim 2 \\times 10^{-10}$. Our new bounds apply for $m_\\phi\\lesssim {\\rm 1~keV}$ and are among the most restrictive ones, whereas for $m_\\phi\\lesssim 0.5\\","authors_text":"Andrea Caputo, Edoardo Vitagliano, Georg Raffelt, Salvatore Bottaro","cross_cats":["astro-ph.SR"],"headline":"","license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"hep-ph","submitted_at":"2023-03-01T19:05:41Z","title":"Stellar limits on scalars from electron-nucleus bremsstrahlung"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.00778","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":"sha256:784b70002e352c92a1e9c3912fc23ffd51ca36190cbb5e45bb52224ecd3b5b40","target":"record","created_at":"2026-07-05T06:42:04Z","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":"77bee58c763e6a6024a991db213de819071cc7d3b65d7b4c82b3e823d3550203","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"hep-ph","submitted_at":"2023-03-01T19:05:41Z","title_canon_sha256":"20e02360f4ed0857b8f5c3d988040c50aea0b1a9a7f56903cf1e744e6ffb4589"},"schema_version":"1.0","source":{"id":"2303.00778","kind":"arxiv","version":2}},"canonical_sha256":"fcea462df3d054bc1921e42ee03496d142dad7ddb531ebd5dbf6a488f5cbb4c2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fcea462df3d054bc1921e42ee03496d142dad7ddb531ebd5dbf6a488f5cbb4c2","first_computed_at":"2026-07-05T06:42:04.165025Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:42:04.165025Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4pO25DNUeAvCvENTf3Pja4CfHC7nAJQ1kktLtPvxsD0E7flLo7VRKOq8rzi42dcC4WaATB3wz0aN+DHGiXETDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T06:42:04.165452Z","signed_message":"canonical_sha256_bytes"},"source_id":"2303.00778","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:784b70002e352c92a1e9c3912fc23ffd51ca36190cbb5e45bb52224ecd3b5b40","sha256:dbbf0938f976766491cbbf7ef22ed27648b9c5f823ad5642d7070748e1ca697e"],"state_sha256":"313113de1059aba6975f172b13af15ce7056de8182d4fad468922a8461693f5f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"APEqvL1TPzi/S4YTK4SGRGHEra1LPDjnfweLLnOymhCv/U2gJ2baWUSabnj6TbKXsweaXLVCnEcjXkZPmTX/AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T02:53:18.139731Z","bundle_sha256":"d861be8eb6a0177e75829ad706c5e5671c4f497837eef1b30ff20bb7a04b1567"}}