{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:7PW65EWDM5725VRGK6S4DBBR54","short_pith_number":"pith:7PW65EWD","schema_version":"1.0","canonical_sha256":"fbedee92c3677faed62657a5c18431ef2c6c77f53e40cd57ea02b8fff31ac0ae","source":{"kind":"arxiv","id":"2511.15800","version":1},"attestation_state":"computed","paper":{"title":"Constraints on lepton-flavor mixing with third-generation new physics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Arianna Tinari, Pol Morell, Sebastiano Covone","submitted_at":"2025-11-19T19:00:07Z","abstract_excerpt":"We study the implications of an approximate $U(2)^5$ flavor symmetry at the TeV scale, under the assumption of new physics predominantly coupled to the third-generation fermions, focusing on the breaking of the $U(2)_\\ell$ subgroup governing the mixing between second- and third-generation left-handed leptons. We derive constraints on the corresponding spurion parameter $\\delta$ from current data on lepton flavor violating (LFV) and lepton flavor universality (LFU) observables, finding that $R_{K^{(*)}}$ and $\\mathcal{B}(B_s \\to \\mu \\mu)$ give the most stringent bound on $\\delta$, yielding ${|\\"},"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":"2511.15800","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2025-11-19T19:00:07Z","cross_cats_sorted":[],"title_canon_sha256":"a9002bc5620a4a24c4e34c7d9c5aef7b01637ccff7b021ab44bd4c353b332a82","abstract_canon_sha256":"cbc67534cd1237fcdeab992a5952b3188f322bb76a5963d35ea2220a58dc70cd"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-02T03:04:35.911119Z","signature_b64":"73qtQ8jQO34YRxEsKqy1l9pd60EceY/wkLpCmWvxwsj/6xPh4x7/UrcwZK3oVpWIwMF9R+Z9taGeGb6YkEQECg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fbedee92c3677faed62657a5c18431ef2c6c77f53e40cd57ea02b8fff31ac0ae","last_reissued_at":"2026-06-02T03:04:35.910648Z","signature_status":"signed_v1","first_computed_at":"2026-06-02T03:04:35.910648Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Constraints on lepton-flavor mixing with third-generation new physics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Arianna Tinari, Pol Morell, Sebastiano Covone","submitted_at":"2025-11-19T19:00:07Z","abstract_excerpt":"We study the implications of an approximate $U(2)^5$ flavor symmetry at the TeV scale, under the assumption of new physics predominantly coupled to the third-generation fermions, focusing on the breaking of the $U(2)_\\ell$ subgroup governing the mixing between second- and third-generation left-handed leptons. We derive constraints on the corresponding spurion parameter $\\delta$ from current data on lepton flavor violating (LFV) and lepton flavor universality (LFU) observables, finding that $R_{K^{(*)}}$ and $\\mathcal{B}(B_s \\to \\mu \\mu)$ give the most stringent bound on $\\delta$, yielding ${|\\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2511.15800","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/2511.15800/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":"2511.15800","created_at":"2026-06-02T03:04:35.910708+00:00"},{"alias_kind":"arxiv_version","alias_value":"2511.15800v1","created_at":"2026-06-02T03:04:35.910708+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2511.15800","created_at":"2026-06-02T03:04:35.910708+00:00"},{"alias_kind":"pith_short_12","alias_value":"7PW65EWDM572","created_at":"2026-06-02T03:04:35.910708+00:00"},{"alias_kind":"pith_short_16","alias_value":"7PW65EWDM5725VRG","created_at":"2026-06-02T03:04:35.910708+00:00"},{"alias_kind":"pith_short_8","alias_value":"7PW65EWD","created_at":"2026-06-02T03:04:35.910708+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/7PW65EWDM5725VRGK6S4DBBR54","json":"https://pith.science/pith/7PW65EWDM5725VRGK6S4DBBR54.json","graph_json":"https://pith.science/api/pith-number/7PW65EWDM5725VRGK6S4DBBR54/graph.json","events_json":"https://pith.science/api/pith-number/7PW65EWDM5725VRGK6S4DBBR54/events.json","paper":"https://pith.science/paper/7PW65EWD"},"agent_actions":{"view_html":"https://pith.science/pith/7PW65EWDM5725VRGK6S4DBBR54","download_json":"https://pith.science/pith/7PW65EWDM5725VRGK6S4DBBR54.json","view_paper":"https://pith.science/paper/7PW65EWD","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2511.15800&json=true","fetch_graph":"https://pith.science/api/pith-number/7PW65EWDM5725VRGK6S4DBBR54/graph.json","fetch_events":"https://pith.science/api/pith-number/7PW65EWDM5725VRGK6S4DBBR54/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/7PW65EWDM5725VRGK6S4DBBR54/action/timestamp_anchor","attest_storage":"https://pith.science/pith/7PW65EWDM5725VRGK6S4DBBR54/action/storage_attestation","attest_author":"https://pith.science/pith/7PW65EWDM5725VRGK6S4DBBR54/action/author_attestation","sign_citation":"https://pith.science/pith/7PW65EWDM5725VRGK6S4DBBR54/action/citation_signature","submit_replication":"https://pith.science/pith/7PW65EWDM5725VRGK6S4DBBR54/action/replication_record"}},"created_at":"2026-06-02T03:04:35.910708+00:00","updated_at":"2026-06-02T03:04:35.910708+00:00"}