{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:7GD552YFN7XSAMXFUJWKXUVDVI","short_pith_number":"pith:7GD552YF","schema_version":"1.0","canonical_sha256":"f987deeb056fef2032e5a26cabd2a3aa05c349d89bef5c54323763792841318d","source":{"kind":"arxiv","id":"1805.05791","version":2},"attestation_state":"computed","paper":{"title":"Branching fraction for $Z$ decays to four leptons and constraints on new physics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"J. Lovelace Rainbolt, Michael Schmitt","submitted_at":"2018-05-15T14:15:44Z","abstract_excerpt":"The LHC experiments have measured the branching fraction for $Z$ decays to four leptons (electrons or muons). We have combined these measurements with the result $\\mathcal{B}(Z \\to 4\\ell) = (4.58 \\pm 0.26) \\times 10^{-6}$, allowing a precise comparison to the standard model prediction of $(4.70 \\pm 0.03) \\times 10^{-6}$. We use a minimal extension of the standard model to demonstrate that this combined value may be used to set stringent limits on new physics."},"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":"1805.05791","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2018-05-15T14:15:44Z","cross_cats_sorted":[],"title_canon_sha256":"5bc7413d0d99a439c9c4cda42743b52cd00bdb096b844d13649560ceb3d79828","abstract_canon_sha256":"a9b1a5d68ae519bb9cdab627984c2aacd5825a048a0ccdc11d9f53cdd95fc919"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:54:44.045854Z","signature_b64":"FnFJ9Nq/rt2AMYK89YL4i6/YyWS4ir6nGxe2ii431gzhyFCJUJLhygKUgHE3e6hlfcHSlIcyzuvrDThJEYATCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f987deeb056fef2032e5a26cabd2a3aa05c349d89bef5c54323763792841318d","last_reissued_at":"2026-05-17T23:54:44.044959Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:54:44.044959Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Branching fraction for $Z$ decays to four leptons and constraints on new physics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"J. Lovelace Rainbolt, Michael Schmitt","submitted_at":"2018-05-15T14:15:44Z","abstract_excerpt":"The LHC experiments have measured the branching fraction for $Z$ decays to four leptons (electrons or muons). We have combined these measurements with the result $\\mathcal{B}(Z \\to 4\\ell) = (4.58 \\pm 0.26) \\times 10^{-6}$, allowing a precise comparison to the standard model prediction of $(4.70 \\pm 0.03) \\times 10^{-6}$. We use a minimal extension of the standard model to demonstrate that this combined value may be used to set stringent limits on new physics."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.05791","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":"1805.05791","created_at":"2026-05-17T23:54:44.045106+00:00"},{"alias_kind":"arxiv_version","alias_value":"1805.05791v2","created_at":"2026-05-17T23:54:44.045106+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.05791","created_at":"2026-05-17T23:54:44.045106+00:00"},{"alias_kind":"pith_short_12","alias_value":"7GD552YFN7XS","created_at":"2026-05-18T12:32:11.075285+00:00"},{"alias_kind":"pith_short_16","alias_value":"7GD552YFN7XSAMXF","created_at":"2026-05-18T12:32:11.075285+00:00"},{"alias_kind":"pith_short_8","alias_value":"7GD552YF","created_at":"2026-05-18T12:32:11.075285+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/7GD552YFN7XSAMXFUJWKXUVDVI","json":"https://pith.science/pith/7GD552YFN7XSAMXFUJWKXUVDVI.json","graph_json":"https://pith.science/api/pith-number/7GD552YFN7XSAMXFUJWKXUVDVI/graph.json","events_json":"https://pith.science/api/pith-number/7GD552YFN7XSAMXFUJWKXUVDVI/events.json","paper":"https://pith.science/paper/7GD552YF"},"agent_actions":{"view_html":"https://pith.science/pith/7GD552YFN7XSAMXFUJWKXUVDVI","download_json":"https://pith.science/pith/7GD552YFN7XSAMXFUJWKXUVDVI.json","view_paper":"https://pith.science/paper/7GD552YF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1805.05791&json=true","fetch_graph":"https://pith.science/api/pith-number/7GD552YFN7XSAMXFUJWKXUVDVI/graph.json","fetch_events":"https://pith.science/api/pith-number/7GD552YFN7XSAMXFUJWKXUVDVI/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/7GD552YFN7XSAMXFUJWKXUVDVI/action/timestamp_anchor","attest_storage":"https://pith.science/pith/7GD552YFN7XSAMXFUJWKXUVDVI/action/storage_attestation","attest_author":"https://pith.science/pith/7GD552YFN7XSAMXFUJWKXUVDVI/action/author_attestation","sign_citation":"https://pith.science/pith/7GD552YFN7XSAMXFUJWKXUVDVI/action/citation_signature","submit_replication":"https://pith.science/pith/7GD552YFN7XSAMXFUJWKXUVDVI/action/replication_record"}},"created_at":"2026-05-17T23:54:44.045106+00:00","updated_at":"2026-05-17T23:54:44.045106+00:00"}