{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:TFJZ6WBHIYBCY5LWKHKOSSJJSG","short_pith_number":"pith:TFJZ6WBH","canonical_record":{"source":{"id":"2604.11232","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-04-13T09:36:42Z","cross_cats_sorted":[],"title_canon_sha256":"4733c2fc5acb80fb948ea4c74bde5c03ed84a1100f57cd46100c373df1949323","abstract_canon_sha256":"453a3ae5009b8e716f22403c0fae45a30ae58905fe12943ea850c530a6cc9d5b"},"schema_version":"1.0"},"canonical_sha256":"99539f582746022c757651d4e9492991b43be5c04f65105d098584ca9325bf59","source":{"kind":"arxiv","id":"2604.11232","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2604.11232","created_at":"2026-06-11T01:10:36Z"},{"alias_kind":"arxiv_version","alias_value":"2604.11232v2","created_at":"2026-06-11T01:10:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2604.11232","created_at":"2026-06-11T01:10:36Z"},{"alias_kind":"pith_short_12","alias_value":"TFJZ6WBHIYBC","created_at":"2026-06-11T01:10:36Z"},{"alias_kind":"pith_short_16","alias_value":"TFJZ6WBHIYBCY5LW","created_at":"2026-06-11T01:10:36Z"},{"alias_kind":"pith_short_8","alias_value":"TFJZ6WBH","created_at":"2026-06-11T01:10:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:TFJZ6WBHIYBCY5LWKHKOSSJJSG","target":"record","payload":{"canonical_record":{"source":{"id":"2604.11232","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-04-13T09:36:42Z","cross_cats_sorted":[],"title_canon_sha256":"4733c2fc5acb80fb948ea4c74bde5c03ed84a1100f57cd46100c373df1949323","abstract_canon_sha256":"453a3ae5009b8e716f22403c0fae45a30ae58905fe12943ea850c530a6cc9d5b"},"schema_version":"1.0"},"canonical_sha256":"99539f582746022c757651d4e9492991b43be5c04f65105d098584ca9325bf59","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-11T01:10:36.041536Z","signature_b64":"Mki7BxUCWMpoqaMYe3sKv4LNNHqSVA0wDI7Hi+OqUVh8gBXLzVamqX8lmFv4eAXWv5mPKRbMqdpzB0N02RwlDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"99539f582746022c757651d4e9492991b43be5c04f65105d098584ca9325bf59","last_reissued_at":"2026-06-11T01:10:36.040491Z","signature_status":"signed_v1","first_computed_at":"2026-06-11T01:10:36.040491Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2604.11232","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":"2026-06-11T01:10:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OkLGY4PGg2I2DTWVOb9nW3YumuNKU0Ttz600yJLGkntuPvFkFdn3bo7Jc3Qt7e5RDFXdHOnLCq1c2GgBriGwBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-22T01:14:00.598709Z"},"content_sha256":"038edf5b0c7b4e6f68c84d71cd35eeb2371d83fab591e7a6dee78fbdc6742d68","schema_version":"1.0","event_id":"sha256:038edf5b0c7b4e6f68c84d71cd35eeb2371d83fab591e7a6dee78fbdc6742d68"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:TFJZ6WBHIYBCY5LWKHKOSSJJSG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Machine learning study on single production of a singlet vectorlike lepton at the Large Hadron Collider","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"Machine learning with XGBoost extends LHC exclusion limits for singlet vector-like leptons to 620 GeV.","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Hong-Hao Zhang, Shiyu Wang, Yiheng Cui, Zhao-Huan Yu","submitted_at":"2026-04-13T09:36:42Z","abstract_excerpt":"Vectorlike leptons are nonchiral, colorless fermions from new physics beyond the Standard Model, appearing in many theoretical extensions. We investigate the prospect for detecting the single production of a singlet vectorlike lepton that mixes with the $\\tau$ lepton at the Large Hadron Collider. The corresponding final states are classified as the three- and four-lepton search channels. The machine learning algorithm XGBoost is employed to enhance signal-background discrimination. Our analysis indicates that, at $\\sqrt{s} = 14~\\mathrm{TeV}$ with an integrated luminosity of $3000~\\mathrm{fb}^{"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"Our analysis indicates that, at √s = 14 TeV with an integrated luminosity of 3000 fb^{-1}, the expected 2σ exclusion limits in the three- and four-lepton channels can reach vector-like lepton masses up to 620 GeV and 490 GeV, respectively.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The projected limits assume that Monte Carlo simulations accurately capture both signal kinematics (dependent on the tau-mixing parameter) and all relevant backgrounds, and that no unaccounted systematic uncertainties degrade the XGBoost performance; if mixing is smaller than assumed or backgrounds are mismodeled, the reach would be reduced.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"XGBoost machine learning improves discrimination in LHC searches for singlet vector-like leptons, yielding projected 2σ mass exclusion limits of 620 GeV (three-lepton) and 490 GeV (four-lepton) at 14 TeV with 3000 fb^{-1}.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Machine learning with XGBoost extends LHC exclusion limits for singlet vector-like leptons to 620 GeV.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"4798fa74bbc1868db93b94eda10bcc9949aacd1c9d7b85cae07d760b9229cbf7"},"source":{"id":"2604.11232","kind":"arxiv","version":2},"verdict":{"id":"84bd7596-e1d0-4e4a-b149-46e973ae841d","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-10T15:11:53.081226Z","strongest_claim":"Our analysis indicates that, at √s = 14 TeV with an integrated luminosity of 3000 fb^{-1}, the expected 2σ exclusion limits in the three- and four-lepton channels can reach vector-like lepton masses up to 620 GeV and 490 GeV, respectively.","one_line_summary":"XGBoost machine learning improves discrimination in LHC searches for singlet vector-like leptons, yielding projected 2σ mass exclusion limits of 620 GeV (three-lepton) and 490 GeV (four-lepton) at 14 TeV with 3000 fb^{-1}.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The projected limits assume that Monte Carlo simulations accurately capture both signal kinematics (dependent on the tau-mixing parameter) and all relevant backgrounds, and that no unaccounted systematic uncertainties degrade the XGBoost performance; if mixing is smaller than assumed or backgrounds are mismodeled, the reach would be reduced.","pith_extraction_headline":"Machine learning with XGBoost extends LHC exclusion limits for singlet vector-like leptons to 620 GeV."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2604.11232/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":"84bd7596-e1d0-4e4a-b149-46e973ae841d"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-06-11T01:10:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZKmWYe7kpL8rZE+Qz0YyrlxvQGnWKH+zforb4oils/ajYW0hOV8njtRNV5F1uVvosM+mCn/pnPfdxapZ2wyJCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-22T01:14:00.599176Z"},"content_sha256":"1ae2b33619a394ee63813e5be10a87ee5e1de05c847098e3624354889bffe9f9","schema_version":"1.0","event_id":"sha256:1ae2b33619a394ee63813e5be10a87ee5e1de05c847098e3624354889bffe9f9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TFJZ6WBHIYBCY5LWKHKOSSJJSG/bundle.json","state_url":"https://pith.science/pith/TFJZ6WBHIYBCY5LWKHKOSSJJSG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TFJZ6WBHIYBCY5LWKHKOSSJJSG/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":"2026-07-22T01:14:00Z","links":{"resolver":"https://pith.science/pith/TFJZ6WBHIYBCY5LWKHKOSSJJSG","bundle":"https://pith.science/pith/TFJZ6WBHIYBCY5LWKHKOSSJJSG/bundle.json","state":"https://pith.science/pith/TFJZ6WBHIYBCY5LWKHKOSSJJSG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TFJZ6WBHIYBCY5LWKHKOSSJJSG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:TFJZ6WBHIYBCY5LWKHKOSSJJSG","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":"453a3ae5009b8e716f22403c0fae45a30ae58905fe12943ea850c530a6cc9d5b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-04-13T09:36:42Z","title_canon_sha256":"4733c2fc5acb80fb948ea4c74bde5c03ed84a1100f57cd46100c373df1949323"},"schema_version":"1.0","source":{"id":"2604.11232","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2604.11232","created_at":"2026-06-11T01:10:36Z"},{"alias_kind":"arxiv_version","alias_value":"2604.11232v2","created_at":"2026-06-11T01:10:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2604.11232","created_at":"2026-06-11T01:10:36Z"},{"alias_kind":"pith_short_12","alias_value":"TFJZ6WBHIYBC","created_at":"2026-06-11T01:10:36Z"},{"alias_kind":"pith_short_16","alias_value":"TFJZ6WBHIYBCY5LW","created_at":"2026-06-11T01:10:36Z"},{"alias_kind":"pith_short_8","alias_value":"TFJZ6WBH","created_at":"2026-06-11T01:10:36Z"}],"graph_snapshots":[{"event_id":"sha256:1ae2b33619a394ee63813e5be10a87ee5e1de05c847098e3624354889bffe9f9","target":"graph","created_at":"2026-06-11T01:10:36Z","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":4,"items":[{"attestation":"unclaimed","claim_id":"C1","kind":"strongest_claim","source":"verdict.strongest_claim","status":"machine_extracted","text":"Our analysis indicates that, at √s = 14 TeV with an integrated luminosity of 3000 fb^{-1}, the expected 2σ exclusion limits in the three- and four-lepton channels can reach vector-like lepton masses up to 620 GeV and 490 GeV, respectively."},{"attestation":"unclaimed","claim_id":"C2","kind":"weakest_assumption","source":"verdict.weakest_assumption","status":"machine_extracted","text":"The projected limits assume that Monte Carlo simulations accurately capture both signal kinematics (dependent on the tau-mixing parameter) and all relevant backgrounds, and that no unaccounted systematic uncertainties degrade the XGBoost performance; if mixing is smaller than assumed or backgrounds are mismodeled, the reach would be reduced."},{"attestation":"unclaimed","claim_id":"C3","kind":"one_line_summary","source":"verdict.one_line_summary","status":"machine_extracted","text":"XGBoost machine learning improves discrimination in LHC searches for singlet vector-like leptons, yielding projected 2σ mass exclusion limits of 620 GeV (three-lepton) and 490 GeV (four-lepton) at 14 TeV with 3000 fb^{-1}."},{"attestation":"unclaimed","claim_id":"C4","kind":"headline","source":"verdict.pith_extraction.headline","status":"machine_extracted","text":"Machine learning with XGBoost extends LHC exclusion limits for singlet vector-like leptons to 620 GeV."}],"snapshot_sha256":"4798fa74bbc1868db93b94eda10bcc9949aacd1c9d7b85cae07d760b9229cbf7"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2604.11232/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Vectorlike leptons are nonchiral, colorless fermions from new physics beyond the Standard Model, appearing in many theoretical extensions. We investigate the prospect for detecting the single production of a singlet vectorlike lepton that mixes with the $\\tau$ lepton at the Large Hadron Collider. The corresponding final states are classified as the three- and four-lepton search channels. The machine learning algorithm XGBoost is employed to enhance signal-background discrimination. Our analysis indicates that, at $\\sqrt{s} = 14~\\mathrm{TeV}$ with an integrated luminosity of $3000~\\mathrm{fb}^{","authors_text":"Hong-Hao Zhang, Shiyu Wang, Yiheng Cui, Zhao-Huan Yu","cross_cats":[],"headline":"Machine learning with XGBoost extends LHC exclusion limits for singlet vector-like leptons to 620 GeV.","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-04-13T09:36:42Z","title":"Machine learning study on single production of a singlet vectorlike lepton at the Large Hadron Collider"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2604.11232","kind":"arxiv","version":2},"verdict":{"created_at":"2026-05-10T15:11:53.081226Z","id":"84bd7596-e1d0-4e4a-b149-46e973ae841d","model_set":{"reader":"grok-4.3"},"one_line_summary":"XGBoost machine learning improves discrimination in LHC searches for singlet vector-like leptons, yielding projected 2σ mass exclusion limits of 620 GeV (three-lepton) and 490 GeV (four-lepton) at 14 TeV with 3000 fb^{-1}.","pipeline_version":"pith-pipeline@v0.9.0","pith_extraction_headline":"Machine learning with XGBoost extends LHC exclusion limits for singlet vector-like leptons to 620 GeV.","strongest_claim":"Our analysis indicates that, at √s = 14 TeV with an integrated luminosity of 3000 fb^{-1}, the expected 2σ exclusion limits in the three- and four-lepton channels can reach vector-like lepton masses up to 620 GeV and 490 GeV, respectively.","weakest_assumption":"The projected limits assume that Monte Carlo simulations accurately capture both signal kinematics (dependent on the tau-mixing parameter) and all relevant backgrounds, and that no unaccounted systematic uncertainties degrade the XGBoost performance; if mixing is smaller than assumed or backgrounds are mismodeled, the reach would be reduced."}},"verdict_id":"84bd7596-e1d0-4e4a-b149-46e973ae841d"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:038edf5b0c7b4e6f68c84d71cd35eeb2371d83fab591e7a6dee78fbdc6742d68","target":"record","created_at":"2026-06-11T01:10:36Z","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":"453a3ae5009b8e716f22403c0fae45a30ae58905fe12943ea850c530a6cc9d5b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-04-13T09:36:42Z","title_canon_sha256":"4733c2fc5acb80fb948ea4c74bde5c03ed84a1100f57cd46100c373df1949323"},"schema_version":"1.0","source":{"id":"2604.11232","kind":"arxiv","version":2}},"canonical_sha256":"99539f582746022c757651d4e9492991b43be5c04f65105d098584ca9325bf59","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"99539f582746022c757651d4e9492991b43be5c04f65105d098584ca9325bf59","first_computed_at":"2026-06-11T01:10:36.040491Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-11T01:10:36.040491Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Mki7BxUCWMpoqaMYe3sKv4LNNHqSVA0wDI7Hi+OqUVh8gBXLzVamqX8lmFv4eAXWv5mPKRbMqdpzB0N02RwlDg==","signature_status":"signed_v1","signed_at":"2026-06-11T01:10:36.041536Z","signed_message":"canonical_sha256_bytes"},"source_id":"2604.11232","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:038edf5b0c7b4e6f68c84d71cd35eeb2371d83fab591e7a6dee78fbdc6742d68","sha256:1ae2b33619a394ee63813e5be10a87ee5e1de05c847098e3624354889bffe9f9"],"state_sha256":"698b20692443e35bba36bd8db02c7da8be922241f8d5ccfb5d8d5d65b5b8ef6a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gMzNxoMIHgM/64cP4Ff1oFUpAkA9JGuLbNjX87+/hcfbQfQqkFsjOOBmtJy5loHTK/so2CAY7qW8KZ75CU6RBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-22T01:14:00.601603Z","bundle_sha256":"51e110013b9a6257f692349482baa32bc7f7fb387ecf221a24aa6bf4392cdae5"}}