{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:ECWEU3KAW5TPX5QKVXAA2CL2Y4","short_pith_number":"pith:ECWEU3KA","schema_version":"1.0","canonical_sha256":"20ac4a6d40b766fbf60aadc00d097ac705d54c958abec6c959c625366fe2b4fc","source":{"kind":"arxiv","id":"2606.24865","version":1},"attestation_state":"computed","paper":{"title":"Probing Invisible Fermions in $B \\to D^{*}\\ell X_{\\text{inv}}$ via Angular Observables","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Lipika Kolay, Shantanu Sahoo, Soumitra Nandi","submitted_at":"2026-06-23T17:46:56Z","abstract_excerpt":"Semileptonic decays $B \\to D^{*} \\ell X_{\\text{inv}}$ provide a sensitive probe of light invisible particles, such as sterile neutrinos or dark-sector fermions. Within a general weak effective theory framework, we show that a massive invisible fermion induces distinctive modifications in the angular distributions. We identify observables with enhanced sensitivity to the invisible particle mass, allowing a clear discrimination of such scenarios, and highlight angular structures that differentiate left- and right-handed lepton-dark-sector currents."},"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":"2606.24865","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2026-06-23T17:46:56Z","cross_cats_sorted":[],"title_canon_sha256":"045b6bf44f4cb2a3438f0dc00b2750b83bc1e608f0b2f18bebf052cb71583ced","abstract_canon_sha256":"a45005ac95e6d7fd22bcf4f7a886765594741f0a63da0b33a69ec0ad5b4f8d56"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-24T01:15:44.894893Z","signature_b64":"ogHbcRqAlQiQftxyqDJITgE/uH1YAT9LFajw4PlrOrq94hu9rIUgSOXAYiplAj2nKwOl65LMp+B759J2A/yYCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"20ac4a6d40b766fbf60aadc00d097ac705d54c958abec6c959c625366fe2b4fc","last_reissued_at":"2026-06-24T01:15:44.894514Z","signature_status":"signed_v1","first_computed_at":"2026-06-24T01:15:44.894514Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Probing Invisible Fermions in $B \\to D^{*}\\ell X_{\\text{inv}}$ via Angular Observables","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Lipika Kolay, Shantanu Sahoo, Soumitra Nandi","submitted_at":"2026-06-23T17:46:56Z","abstract_excerpt":"Semileptonic decays $B \\to D^{*} \\ell X_{\\text{inv}}$ provide a sensitive probe of light invisible particles, such as sterile neutrinos or dark-sector fermions. Within a general weak effective theory framework, we show that a massive invisible fermion induces distinctive modifications in the angular distributions. We identify observables with enhanced sensitivity to the invisible particle mass, allowing a clear discrimination of such scenarios, and highlight angular structures that differentiate left- and right-handed lepton-dark-sector currents."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.24865","kind":"arxiv","version":1},"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/2606.24865/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":"2606.24865","created_at":"2026-06-24T01:15:44.894570+00:00"},{"alias_kind":"arxiv_version","alias_value":"2606.24865v1","created_at":"2026-06-24T01:15:44.894570+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.24865","created_at":"2026-06-24T01:15:44.894570+00:00"},{"alias_kind":"pith_short_12","alias_value":"ECWEU3KAW5TP","created_at":"2026-06-24T01:15:44.894570+00:00"},{"alias_kind":"pith_short_16","alias_value":"ECWEU3KAW5TPX5QK","created_at":"2026-06-24T01:15:44.894570+00:00"},{"alias_kind":"pith_short_8","alias_value":"ECWEU3KA","created_at":"2026-06-24T01:15:44.894570+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ECWEU3KAW5TPX5QKVXAA2CL2Y4","json":"https://pith.science/pith/ECWEU3KAW5TPX5QKVXAA2CL2Y4.json","graph_json":"https://pith.science/api/pith-number/ECWEU3KAW5TPX5QKVXAA2CL2Y4/graph.json","events_json":"https://pith.science/api/pith-number/ECWEU3KAW5TPX5QKVXAA2CL2Y4/events.json","paper":"https://pith.science/paper/ECWEU3KA"},"agent_actions":{"view_html":"https://pith.science/pith/ECWEU3KAW5TPX5QKVXAA2CL2Y4","download_json":"https://pith.science/pith/ECWEU3KAW5TPX5QKVXAA2CL2Y4.json","view_paper":"https://pith.science/paper/ECWEU3KA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2606.24865&json=true","fetch_graph":"https://pith.science/api/pith-number/ECWEU3KAW5TPX5QKVXAA2CL2Y4/graph.json","fetch_events":"https://pith.science/api/pith-number/ECWEU3KAW5TPX5QKVXAA2CL2Y4/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ECWEU3KAW5TPX5QKVXAA2CL2Y4/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ECWEU3KAW5TPX5QKVXAA2CL2Y4/action/storage_attestation","attest_author":"https://pith.science/pith/ECWEU3KAW5TPX5QKVXAA2CL2Y4/action/author_attestation","sign_citation":"https://pith.science/pith/ECWEU3KAW5TPX5QKVXAA2CL2Y4/action/citation_signature","submit_replication":"https://pith.science/pith/ECWEU3KAW5TPX5QKVXAA2CL2Y4/action/replication_record"}},"created_at":"2026-06-24T01:15:44.894570+00:00","updated_at":"2026-06-24T01:15:44.894570+00:00"}