{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:1998:RX5C6FIXOWSTNPJVFPR6NE3LUM","short_pith_number":"pith:RX5C6FIX","schema_version":"1.0","canonical_sha256":"8dfa2f151775a536bd352be3e6936ba333a2e8d405b6eb532256eb2713e82d37","source":{"kind":"arxiv","id":"hep-ph/9805380","version":1},"attestation_state":"computed","paper":{"title":"Probing partonic structure in gamma* gamma -> pi pi near threshold","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"B. Pire, M. Diehl, O. Teryaev, T. Gousset","submitted_at":"1998-05-19T16:34:22Z","abstract_excerpt":"Hadron pair production gamma* gamma -> h hbar in the region where the c.m. energy is much smaller than the photon virtuality can be described in a factorized form, as the convolution of a partonic handbag diagram and generalized distribution amplitudes which are new non-perturbative functions describing the exclusive fragmentation of a quark-antiquark pair into two hadrons. Scaling behavior and a selection rule on photon helicity are signatures of this mechanism. The case where h is a pion is emphasized."},"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":"hep-ph/9805380","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1998-05-19T16:34:22Z","cross_cats_sorted":[],"title_canon_sha256":"8887c9eace6eb437001dad4d522030b52e849080147db82a2fabde12ff8b871d","abstract_canon_sha256":"f46917e961349f930a10b9e576c3416032b15fb35f302b35a832df8db723cba3"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:09:15.995588Z","signature_b64":"20Th945ZuAgzLC+7gDyefErzq1JUnN8ieVxtC22Ds+25DxgcFDCWJqp+rZVzQZGiwQ0+j38EN1uQID+n/l8dCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8dfa2f151775a536bd352be3e6936ba333a2e8d405b6eb532256eb2713e82d37","last_reissued_at":"2026-07-04T16:09:15.995242Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:09:15.995242Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Probing partonic structure in gamma* gamma -> pi pi near threshold","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"B. Pire, M. Diehl, O. Teryaev, T. Gousset","submitted_at":"1998-05-19T16:34:22Z","abstract_excerpt":"Hadron pair production gamma* gamma -> h hbar in the region where the c.m. energy is much smaller than the photon virtuality can be described in a factorized form, as the convolution of a partonic handbag diagram and generalized distribution amplitudes which are new non-perturbative functions describing the exclusive fragmentation of a quark-antiquark pair into two hadrons. Scaling behavior and a selection rule on photon helicity are signatures of this mechanism. The case where h is a pion is emphasized."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9805380","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/hep-ph/9805380/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":"hep-ph/9805380","created_at":"2026-07-04T16:09:15.995300+00:00"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9805380v1","created_at":"2026-07-04T16:09:15.995300+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9805380","created_at":"2026-07-04T16:09:15.995300+00:00"},{"alias_kind":"pith_short_12","alias_value":"RX5C6FIXOWST","created_at":"2026-07-04T16:09:15.995300+00:00"},{"alias_kind":"pith_short_16","alias_value":"RX5C6FIXOWSTNPJV","created_at":"2026-07-04T16:09:15.995300+00:00"},{"alias_kind":"pith_short_8","alias_value":"RX5C6FIX","created_at":"2026-07-04T16:09:15.995300+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2507.23529","citing_title":"Revealing chiral-odd two-meson generalized distribution amplitudes in $e^- e^+ \\to (\\pi \\pi) (\\pi \\pi)$ reactions","ref_index":7,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/RX5C6FIXOWSTNPJVFPR6NE3LUM","json":"https://pith.science/pith/RX5C6FIXOWSTNPJVFPR6NE3LUM.json","graph_json":"https://pith.science/api/pith-number/RX5C6FIXOWSTNPJVFPR6NE3LUM/graph.json","events_json":"https://pith.science/api/pith-number/RX5C6FIXOWSTNPJVFPR6NE3LUM/events.json","paper":"https://pith.science/paper/RX5C6FIX"},"agent_actions":{"view_html":"https://pith.science/pith/RX5C6FIXOWSTNPJVFPR6NE3LUM","download_json":"https://pith.science/pith/RX5C6FIXOWSTNPJVFPR6NE3LUM.json","view_paper":"https://pith.science/paper/RX5C6FIX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=hep-ph/9805380&json=true","fetch_graph":"https://pith.science/api/pith-number/RX5C6FIXOWSTNPJVFPR6NE3LUM/graph.json","fetch_events":"https://pith.science/api/pith-number/RX5C6FIXOWSTNPJVFPR6NE3LUM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/RX5C6FIXOWSTNPJVFPR6NE3LUM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/RX5C6FIXOWSTNPJVFPR6NE3LUM/action/storage_attestation","attest_author":"https://pith.science/pith/RX5C6FIXOWSTNPJVFPR6NE3LUM/action/author_attestation","sign_citation":"https://pith.science/pith/RX5C6FIXOWSTNPJVFPR6NE3LUM/action/citation_signature","submit_replication":"https://pith.science/pith/RX5C6FIXOWSTNPJVFPR6NE3LUM/action/replication_record"}},"created_at":"2026-07-04T16:09:15.995300+00:00","updated_at":"2026-07-04T16:09:15.995300+00:00"}