{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:UK2FATSE7ELSR6FGHRHUGTVK52","short_pith_number":"pith:UK2FATSE","schema_version":"1.0","canonical_sha256":"a2b4504e44f91728f8a63c4f434eaaee98f0e3ffa122fbca053d3843f700f299","source":{"kind":"arxiv","id":"2109.14969","version":1},"attestation_state":"computed","paper":{"title":"Prospects of CKM elements $|V_{cs}|$ and decay constant $f_{D_{s}^+}$ in $D_s^+\\to\\mu^+\\nu_\\mu$ decay at STCF","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"Bo Zheng, Huijing Li, Jiajun Liu, Xiaodong Shi, Xiaorong Zhou","submitted_at":"2021-09-30T09:56:15Z","abstract_excerpt":"We report a feasibility study of pure leptonic decay $D_s^+\\to\\mu^+\\nu_\\mu$ by using a fast simulation software package at STCF. With an expected luminosity of $1~\\mathrm{ab}^{-1}$ collected at STCF at a center-of-mass energy of 4.009 GeV, the statistical sensitivity of the branching fraction is determined to be 0.3\\%. Combining this result with the $c\\rightarrow s$ quark mixing matrix element $|V_{cs}|$ determined from the current global Standard Model fit, the statistical sensitivity of $D_s^+$ decay constant, $f_{D_s^+}$, is estimated to be 0.2\\%. Alternatively, combining the current result"},"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":"2109.14969","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"hep-ex","submitted_at":"2021-09-30T09:56:15Z","cross_cats_sorted":[],"title_canon_sha256":"87fa47a1928daba10afea643033042dc7b574c896574f2c2b38addb394d4b689","abstract_canon_sha256":"1cdcf18b3aff217e2c49d252af2f6d7bf192e3750bc56ae100559071e83316e2"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:52:17.255155Z","signature_b64":"aYJrCBcNDTUCawWrZD60G4YxPfBnkltDfSXrfmXeWYNKj8r+11BMO95VTG2zhwdRc9QUEwVU9V0TKBPbqeb5Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a2b4504e44f91728f8a63c4f434eaaee98f0e3ffa122fbca053d3843f700f299","last_reissued_at":"2026-07-05T05:52:17.254647Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:52:17.254647Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Prospects of CKM elements $|V_{cs}|$ and decay constant $f_{D_{s}^+}$ in $D_s^+\\to\\mu^+\\nu_\\mu$ decay at STCF","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"Bo Zheng, Huijing Li, Jiajun Liu, Xiaodong Shi, Xiaorong Zhou","submitted_at":"2021-09-30T09:56:15Z","abstract_excerpt":"We report a feasibility study of pure leptonic decay $D_s^+\\to\\mu^+\\nu_\\mu$ by using a fast simulation software package at STCF. With an expected luminosity of $1~\\mathrm{ab}^{-1}$ collected at STCF at a center-of-mass energy of 4.009 GeV, the statistical sensitivity of the branching fraction is determined to be 0.3\\%. Combining this result with the $c\\rightarrow s$ quark mixing matrix element $|V_{cs}|$ determined from the current global Standard Model fit, the statistical sensitivity of $D_s^+$ decay constant, $f_{D_s^+}$, is estimated to be 0.2\\%. Alternatively, combining the current result"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.14969","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/2109.14969/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":"2109.14969","created_at":"2026-07-05T05:52:17.254707+00:00"},{"alias_kind":"arxiv_version","alias_value":"2109.14969v1","created_at":"2026-07-05T05:52:17.254707+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.14969","created_at":"2026-07-05T05:52:17.254707+00:00"},{"alias_kind":"pith_short_12","alias_value":"UK2FATSE7ELS","created_at":"2026-07-05T05:52:17.254707+00:00"},{"alias_kind":"pith_short_16","alias_value":"UK2FATSE7ELSR6FG","created_at":"2026-07-05T05:52:17.254707+00:00"},{"alias_kind":"pith_short_8","alias_value":"UK2FATSE","created_at":"2026-07-05T05:52:17.254707+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/UK2FATSE7ELSR6FGHRHUGTVK52","json":"https://pith.science/pith/UK2FATSE7ELSR6FGHRHUGTVK52.json","graph_json":"https://pith.science/api/pith-number/UK2FATSE7ELSR6FGHRHUGTVK52/graph.json","events_json":"https://pith.science/api/pith-number/UK2FATSE7ELSR6FGHRHUGTVK52/events.json","paper":"https://pith.science/paper/UK2FATSE"},"agent_actions":{"view_html":"https://pith.science/pith/UK2FATSE7ELSR6FGHRHUGTVK52","download_json":"https://pith.science/pith/UK2FATSE7ELSR6FGHRHUGTVK52.json","view_paper":"https://pith.science/paper/UK2FATSE","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2109.14969&json=true","fetch_graph":"https://pith.science/api/pith-number/UK2FATSE7ELSR6FGHRHUGTVK52/graph.json","fetch_events":"https://pith.science/api/pith-number/UK2FATSE7ELSR6FGHRHUGTVK52/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/UK2FATSE7ELSR6FGHRHUGTVK52/action/timestamp_anchor","attest_storage":"https://pith.science/pith/UK2FATSE7ELSR6FGHRHUGTVK52/action/storage_attestation","attest_author":"https://pith.science/pith/UK2FATSE7ELSR6FGHRHUGTVK52/action/author_attestation","sign_citation":"https://pith.science/pith/UK2FATSE7ELSR6FGHRHUGTVK52/action/citation_signature","submit_replication":"https://pith.science/pith/UK2FATSE7ELSR6FGHRHUGTVK52/action/replication_record"}},"created_at":"2026-07-05T05:52:17.254707+00:00","updated_at":"2026-07-05T05:52:17.254707+00:00"}