{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:CYBYRQPRTNFCC27YRPAQSRAWTD","short_pith_number":"pith:CYBYRQPR","canonical_record":{"source":{"id":"hep-ph/0107154","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"2001-07-13T15:51:54Z","cross_cats_sorted":[],"title_canon_sha256":"086b47388b89c3028f46db068625a3dbd40561734d8af4eee7bcf8184e548720","abstract_canon_sha256":"4368a56d28133e45bacfeb3d2ccbb80f05e169c04c8cbb0566348d6fcc625610"},"schema_version":"1.0"},"canonical_sha256":"160388c1f19b4a216bf88bc109441698fded3df0bd8b0e5191a071a6c3667d12","source":{"kind":"arxiv","id":"hep-ph/0107154","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/0107154","created_at":"2026-05-18T04:13:26Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0107154v3","created_at":"2026-05-18T04:13:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0107154","created_at":"2026-05-18T04:13:26Z"},{"alias_kind":"pith_short_12","alias_value":"CYBYRQPRTNFC","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"CYBYRQPRTNFCC27Y","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"CYBYRQPR","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:CYBYRQPRTNFCC27YRPAQSRAWTD","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ph/0107154","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"2001-07-13T15:51:54Z","cross_cats_sorted":[],"title_canon_sha256":"086b47388b89c3028f46db068625a3dbd40561734d8af4eee7bcf8184e548720","abstract_canon_sha256":"4368a56d28133e45bacfeb3d2ccbb80f05e169c04c8cbb0566348d6fcc625610"},"schema_version":"1.0"},"canonical_sha256":"160388c1f19b4a216bf88bc109441698fded3df0bd8b0e5191a071a6c3667d12","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:13:26.485621Z","signature_b64":"uPqkH4MSYxN8NvJOI9nzcu2cebbIkckVtdbyK65M64CpAmOPfqHFYxPZzx1odoHWK4vNn7a076LVaaS8y/G0Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"160388c1f19b4a216bf88bc109441698fded3df0bd8b0e5191a071a6c3667d12","last_reissued_at":"2026-05-18T04:13:26.485123Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:13:26.485123Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ph/0107154","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:13:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+2baF5hTvH8bbedfE3LT8Zfp+F9gLFabm2kUZ+m1bmGrCNGiz4VvWCO84dRHuzcXw97LjlQSB1GNFdVXoqOtDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T14:30:20.199192Z"},"content_sha256":"b42d90e84f1c10f84b226e750b5714bb4735f627576d6e93e3c5c02a5420b8c3","schema_version":"1.0","event_id":"sha256:b42d90e84f1c10f84b226e750b5714bb4735f627576d6e93e3c5c02a5420b8c3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:CYBYRQPRTNFCC27YRPAQSRAWTD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Pion Pair Production with Higher Order Radiative Corrections in Low Energy e+e- Collisions","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"A. Hoefer (DESY Zeuthen), F. Jegerlehner (DESY Zeuthen), J. Gluza (Silesia U.)","submitted_at":"2001-07-13T15:51:54Z","abstract_excerpt":"The complete one-loop QED initial state, final state and initial--final state interference corrections to the process e+e- -> pi+pi- are presented. Analytic formulae are given for the virtual and for the real photon corrections. The total cross section, the pion angular distribution and the pi+pi- invariant mass distribution are investigated in the regime of experimentally realistic kinematical cuts. It is shown that in addition to the full one-loop corrections also two-loop initial state corrections and even the resummation of higher order soft photon logarithms can be necessary if at least p"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0107154","kind":"arxiv","version":3},"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":"2026-05-18T04:13:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DISojE2TJghYTdibjSFqkwm+X/YOIGVZcKyfY1lEupzuyhSmVsoEZcieeHxOyfscrxjVHEPyt1nCSS2Zgm7cDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T14:30:20.199772Z"},"content_sha256":"73aaf34249f00ef891319d6d89c606a0276643a90f7aa383ffc55ff6701f6992","schema_version":"1.0","event_id":"sha256:73aaf34249f00ef891319d6d89c606a0276643a90f7aa383ffc55ff6701f6992"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CYBYRQPRTNFCC27YRPAQSRAWTD/bundle.json","state_url":"https://pith.science/pith/CYBYRQPRTNFCC27YRPAQSRAWTD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CYBYRQPRTNFCC27YRPAQSRAWTD/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":"2026-05-31T14:30:20Z","links":{"resolver":"https://pith.science/pith/CYBYRQPRTNFCC27YRPAQSRAWTD","bundle":"https://pith.science/pith/CYBYRQPRTNFCC27YRPAQSRAWTD/bundle.json","state":"https://pith.science/pith/CYBYRQPRTNFCC27YRPAQSRAWTD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CYBYRQPRTNFCC27YRPAQSRAWTD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:CYBYRQPRTNFCC27YRPAQSRAWTD","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":"4368a56d28133e45bacfeb3d2ccbb80f05e169c04c8cbb0566348d6fcc625610","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"2001-07-13T15:51:54Z","title_canon_sha256":"086b47388b89c3028f46db068625a3dbd40561734d8af4eee7bcf8184e548720"},"schema_version":"1.0","source":{"id":"hep-ph/0107154","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/0107154","created_at":"2026-05-18T04:13:26Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0107154v3","created_at":"2026-05-18T04:13:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0107154","created_at":"2026-05-18T04:13:26Z"},{"alias_kind":"pith_short_12","alias_value":"CYBYRQPRTNFC","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"CYBYRQPRTNFCC27Y","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"CYBYRQPR","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:73aaf34249f00ef891319d6d89c606a0276643a90f7aa383ffc55ff6701f6992","target":"graph","created_at":"2026-05-18T04:13:26Z","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 complete one-loop QED initial state, final state and initial--final state interference corrections to the process e+e- -> pi+pi- are presented. Analytic formulae are given for the virtual and for the real photon corrections. The total cross section, the pion angular distribution and the pi+pi- invariant mass distribution are investigated in the regime of experimentally realistic kinematical cuts. It is shown that in addition to the full one-loop corrections also two-loop initial state corrections and even the resummation of higher order soft photon logarithms can be necessary if at least p","authors_text":"A. Hoefer (DESY Zeuthen), F. Jegerlehner (DESY Zeuthen), J. Gluza (Silesia U.)","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"2001-07-13T15:51:54Z","title":"Pion Pair Production with Higher Order Radiative Corrections in Low Energy e+e- Collisions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0107154","kind":"arxiv","version":3},"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:b42d90e84f1c10f84b226e750b5714bb4735f627576d6e93e3c5c02a5420b8c3","target":"record","created_at":"2026-05-18T04:13:26Z","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":"4368a56d28133e45bacfeb3d2ccbb80f05e169c04c8cbb0566348d6fcc625610","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"2001-07-13T15:51:54Z","title_canon_sha256":"086b47388b89c3028f46db068625a3dbd40561734d8af4eee7bcf8184e548720"},"schema_version":"1.0","source":{"id":"hep-ph/0107154","kind":"arxiv","version":3}},"canonical_sha256":"160388c1f19b4a216bf88bc109441698fded3df0bd8b0e5191a071a6c3667d12","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"160388c1f19b4a216bf88bc109441698fded3df0bd8b0e5191a071a6c3667d12","first_computed_at":"2026-05-18T04:13:26.485123Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:13:26.485123Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uPqkH4MSYxN8NvJOI9nzcu2cebbIkckVtdbyK65M64CpAmOPfqHFYxPZzx1odoHWK4vNn7a076LVaaS8y/G0Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:13:26.485621Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/0107154","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b42d90e84f1c10f84b226e750b5714bb4735f627576d6e93e3c5c02a5420b8c3","sha256:73aaf34249f00ef891319d6d89c606a0276643a90f7aa383ffc55ff6701f6992"],"state_sha256":"8cce7b210a51b894e336f8fe93628d071a6c59bf376be73c093492381809e4ed"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EMNYAwSBRWba7hwUwJ1w0Nfeh8ieQveXIjsrmFvmv/NKaGNgz7GsLJksVmDj741A3c+weV3FsVEKUDyKjxfICw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T14:30:20.202466Z","bundle_sha256":"d58d3c933e794807e864b2af97c949eb88a8faa02858252b707b7f832614da90"}}