{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1997:NRC3HLZZHSY2PUP7WBVXHANMSC","short_pith_number":"pith:NRC3HLZZ","canonical_record":{"source":{"id":"hep-ph/9701407","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1997-01-29T11:12:42Z","cross_cats_sorted":[],"title_canon_sha256":"9c8a2baea60a7828cba1d866fb3d7d092c1985e1f8625f2989f4df4d9b196f14","abstract_canon_sha256":"b29c06065b773f820b14860e675148fa8448b555b45c992fb97b608c92e1b597"},"schema_version":"1.0"},"canonical_sha256":"6c45b3af393cb1a7d1ffb06b7381ac908cba12cc63a7387c81a50864c272e1d4","source":{"kind":"arxiv","id":"hep-ph/9701407","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9701407","created_at":"2026-05-18T01:06:09Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9701407v1","created_at":"2026-05-18T01:06:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9701407","created_at":"2026-05-18T01:06:09Z"},{"alias_kind":"pith_short_12","alias_value":"NRC3HLZZHSY2","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"NRC3HLZZHSY2PUP7","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"NRC3HLZZ","created_at":"2026-05-18T12:25:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1997:NRC3HLZZHSY2PUP7WBVXHANMSC","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ph/9701407","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1997-01-29T11:12:42Z","cross_cats_sorted":[],"title_canon_sha256":"9c8a2baea60a7828cba1d866fb3d7d092c1985e1f8625f2989f4df4d9b196f14","abstract_canon_sha256":"b29c06065b773f820b14860e675148fa8448b555b45c992fb97b608c92e1b597"},"schema_version":"1.0"},"canonical_sha256":"6c45b3af393cb1a7d1ffb06b7381ac908cba12cc63a7387c81a50864c272e1d4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:06:09.526866Z","signature_b64":"e/O6MLVBQOPMUfommzHvrBPYsovOjxaZeXgTb8atFxp5Gns3lyuLXMi6q6VWeBY69JR5tMyNbWcJC7ZqgPdjAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6c45b3af393cb1a7d1ffb06b7381ac908cba12cc63a7387c81a50864c272e1d4","last_reissued_at":"2026-05-18T01:06:09.526192Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:06:09.526192Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ph/9701407","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:06:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"te4e7z6AbcnGP2Nk/eeyv9JtKOBQ2Z38jW92H6/IeDQYHLUqFOzy6YjOqOu5/16MbJW51BjOy4kqoIs/0pHrCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T17:36:55.064083Z"},"content_sha256":"066f5ba6ac6a6b98f9f3a9ccd0bac91df215f84db7acd043d49546cb9507f655","schema_version":"1.0","event_id":"sha256:066f5ba6ac6a6b98f9f3a9ccd0bac91df215f84db7acd043d49546cb9507f655"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1997:NRC3HLZZHSY2PUP7WBVXHANMSC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Role of the non-resonant background in the $\\rho^0$-meson diffractive electro- and photoproproduction","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"M.G.Ryskin, St.Petersburg), Yu.M.Shabelski (Petersburg Nuclear Physics Institute Gatchina","submitted_at":"1997-01-29T11:12:42Z","abstract_excerpt":"The background due to the direct diffractive dissociation of the photon into the $\\pi^+\\pi^-$-pair to the \"elastic\" diffractive $\\rho^0$-meson production in electron-proton collisions is calculated. The amplitude for the background process $\\gamma p \\to \\pi^+ \\pi^- p$ is proportional to the $\\pi$-meson - proton cross section. Therefore, describing the HERA data, we can estimate $\\sigma (\\pi p)$ at energy $s_{\\pi p}\\sim (2 - 3) \\times 10^{3}$ GeV$^2$ that is considerably higher the existing data. At large $Q^2$ the interference between resonant and non-resonant $\\pi^+ \\pi^-$ production leads al"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9701407","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":""},"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":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:06:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dE05GvSehEG/w/IcgQCdR+EFxSvDsmF2fTsDyfLG95YY+e2SKZCBTueVq4KK96uTMCXEdjad3zzQO5g7aKKtAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T17:36:55.064810Z"},"content_sha256":"a9609d6ae1a760e41c60752317b5ba835271ffc09531286c03ab88dcb46bdec4","schema_version":"1.0","event_id":"sha256:a9609d6ae1a760e41c60752317b5ba835271ffc09531286c03ab88dcb46bdec4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NRC3HLZZHSY2PUP7WBVXHANMSC/bundle.json","state_url":"https://pith.science/pith/NRC3HLZZHSY2PUP7WBVXHANMSC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NRC3HLZZHSY2PUP7WBVXHANMSC/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":"2026-06-09T17:36:55Z","links":{"resolver":"https://pith.science/pith/NRC3HLZZHSY2PUP7WBVXHANMSC","bundle":"https://pith.science/pith/NRC3HLZZHSY2PUP7WBVXHANMSC/bundle.json","state":"https://pith.science/pith/NRC3HLZZHSY2PUP7WBVXHANMSC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NRC3HLZZHSY2PUP7WBVXHANMSC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1997:NRC3HLZZHSY2PUP7WBVXHANMSC","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":"b29c06065b773f820b14860e675148fa8448b555b45c992fb97b608c92e1b597","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1997-01-29T11:12:42Z","title_canon_sha256":"9c8a2baea60a7828cba1d866fb3d7d092c1985e1f8625f2989f4df4d9b196f14"},"schema_version":"1.0","source":{"id":"hep-ph/9701407","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9701407","created_at":"2026-05-18T01:06:09Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9701407v1","created_at":"2026-05-18T01:06:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9701407","created_at":"2026-05-18T01:06:09Z"},{"alias_kind":"pith_short_12","alias_value":"NRC3HLZZHSY2","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"NRC3HLZZHSY2PUP7","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"NRC3HLZZ","created_at":"2026-05-18T12:25:48Z"}],"graph_snapshots":[{"event_id":"sha256:a9609d6ae1a760e41c60752317b5ba835271ffc09531286c03ab88dcb46bdec4","target":"graph","created_at":"2026-05-18T01:06:09Z","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":"The background due to the direct diffractive dissociation of the photon into the $\\pi^+\\pi^-$-pair to the \"elastic\" diffractive $\\rho^0$-meson production in electron-proton collisions is calculated. The amplitude for the background process $\\gamma p \\to \\pi^+ \\pi^- p$ is proportional to the $\\pi$-meson - proton cross section. Therefore, describing the HERA data, we can estimate $\\sigma (\\pi p)$ at energy $s_{\\pi p}\\sim (2 - 3) \\times 10^{3}$ GeV$^2$ that is considerably higher the existing data. At large $Q^2$ the interference between resonant and non-resonant $\\pi^+ \\pi^-$ production leads al","authors_text":"M.G.Ryskin, St.Petersburg), Yu.M.Shabelski (Petersburg Nuclear Physics Institute Gatchina","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"1997-01-29T11:12:42Z","title":"Role of the non-resonant background in the $\\rho^0$-meson diffractive electro- and photoproproduction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9701407","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":"sha256:066f5ba6ac6a6b98f9f3a9ccd0bac91df215f84db7acd043d49546cb9507f655","target":"record","created_at":"2026-05-18T01:06:09Z","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":"b29c06065b773f820b14860e675148fa8448b555b45c992fb97b608c92e1b597","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1997-01-29T11:12:42Z","title_canon_sha256":"9c8a2baea60a7828cba1d866fb3d7d092c1985e1f8625f2989f4df4d9b196f14"},"schema_version":"1.0","source":{"id":"hep-ph/9701407","kind":"arxiv","version":1}},"canonical_sha256":"6c45b3af393cb1a7d1ffb06b7381ac908cba12cc63a7387c81a50864c272e1d4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6c45b3af393cb1a7d1ffb06b7381ac908cba12cc63a7387c81a50864c272e1d4","first_computed_at":"2026-05-18T01:06:09.526192Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:06:09.526192Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"e/O6MLVBQOPMUfommzHvrBPYsovOjxaZeXgTb8atFxp5Gns3lyuLXMi6q6VWeBY69JR5tMyNbWcJC7ZqgPdjAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:06:09.526866Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/9701407","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:066f5ba6ac6a6b98f9f3a9ccd0bac91df215f84db7acd043d49546cb9507f655","sha256:a9609d6ae1a760e41c60752317b5ba835271ffc09531286c03ab88dcb46bdec4"],"state_sha256":"6306c63a1a1245609e151dbb5b2d9217058db48c080a8ceffb781f57c02443f5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/wgZ7tHtc/jTpAitTtSqj0XZqHlswqXbEoQna3diokCxPl8hZQKpMbXV/gDNW+UXUVyqRmrwhM3TQshSIr7UDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T17:36:55.069597Z","bundle_sha256":"08cde596f0b4b73d0840b2bc19f97893d1a1f97b76b8f5e6a57549b1b86e0066"}}