{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:IB2WJZ2PNWNWEZIQDMGWNBGKX2","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":"b92e2032ee3aeb0fbcc333b7ccd706c0e210f9577db6085df29acc6af80ef5bc","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"2000-09-11T10:32:40Z","title_canon_sha256":"38c6873ba45d6300d8c48b3bc9ac0985140364167a969fb11f5b94b56e14aa4d"},"schema_version":"1.0","source":{"id":"hep-ph/0009117","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/0009117","created_at":"2026-05-18T04:31:10Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0009117v1","created_at":"2026-05-18T04:31:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0009117","created_at":"2026-05-18T04:31:10Z"},{"alias_kind":"pith_short_12","alias_value":"IB2WJZ2PNWNW","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"IB2WJZ2PNWNWEZIQ","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"IB2WJZ2P","created_at":"2026-05-18T12:25:49Z"}],"graph_snapshots":[{"event_id":"sha256:ff7404d2ce81fd83dc98b94a1e0f7a2718c34d0217e3ac774a8af5267b1c94fe","target":"graph","created_at":"2026-05-18T04:31:10Z","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":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We quantitatively discuss the possibility of deriving model-independent constraints on the general four-fermion contact interaction couplings, from the currently available data on the two-fermion production processes $e^+e^-\\to\\mu^+\\mu^-$, $b\\bar{b}$ and $c\\bar{c}$ with unpolarized initial beams. The method is essentially based on particular, simple, combinations of the measured total cross section and forward-backward asymmetry that allow partial separation of the helicity cross sections, and the combination of experimental data obtained at the different energies of TRISTAN, LEP1 and LEP2.","authors_text":"A.A. Pankov, N. Paver","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"2000-09-11T10:32:40Z","title":"Model independent constraints on contact interactions from LEP2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0009117","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:9bcbfeca2b7ecaa654763aefdd8143115c69df8ab2f239c4a4582148be7874bc","target":"record","created_at":"2026-05-18T04:31:10Z","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":"b92e2032ee3aeb0fbcc333b7ccd706c0e210f9577db6085df29acc6af80ef5bc","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"2000-09-11T10:32:40Z","title_canon_sha256":"38c6873ba45d6300d8c48b3bc9ac0985140364167a969fb11f5b94b56e14aa4d"},"schema_version":"1.0","source":{"id":"hep-ph/0009117","kind":"arxiv","version":1}},"canonical_sha256":"407564e74f6d9b6265101b0d6684cabe86caa7b43cdf5a0fab252977788f0954","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"407564e74f6d9b6265101b0d6684cabe86caa7b43cdf5a0fab252977788f0954","first_computed_at":"2026-05-18T04:31:10.672363Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:31:10.672363Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JA0fnLzGlLp2NVo+wd8rYstBPOn3239QC9RuyGiP9WcuHb1fn8/Urgd2dAX9xCHezWQ6AyE6fasg8K/KbWbkAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:31:10.672784Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/0009117","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9bcbfeca2b7ecaa654763aefdd8143115c69df8ab2f239c4a4582148be7874bc","sha256:ff7404d2ce81fd83dc98b94a1e0f7a2718c34d0217e3ac774a8af5267b1c94fe"],"state_sha256":"e74b2c5bb89491e3f5ba6b2b8ba9b1c4c477985edc2286d2d5bf289cff14bc43"}