{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1999:B3P4GJ26DRJOG2WH2XCL3RMVYY","short_pith_number":"pith:B3P4GJ26","canonical_record":{"source":{"id":"hep-ph/9907498","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1999-07-26T16:39:00Z","cross_cats_sorted":[],"title_canon_sha256":"6f1e4d5ab711f0a2aaf188cca80cb1bf9b445e8f98ec3b6462c41188fe995dcf","abstract_canon_sha256":"2d568032f7cf1761e9355be299687714e7fe370a0b7d46622c6641b1599033c6"},"schema_version":"1.0"},"canonical_sha256":"0edfc3275e1c52e36ac7d5c4bdc595c6081de5b9501c6d7455edb6f3d284572b","source":{"kind":"arxiv","id":"hep-ph/9907498","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9907498","created_at":"2026-07-04T16:14:24Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9907498v1","created_at":"2026-07-04T16:14:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9907498","created_at":"2026-07-04T16:14:24Z"},{"alias_kind":"pith_short_12","alias_value":"B3P4GJ26DRJO","created_at":"2026-07-04T16:14:24Z"},{"alias_kind":"pith_short_16","alias_value":"B3P4GJ26DRJOG2WH","created_at":"2026-07-04T16:14:24Z"},{"alias_kind":"pith_short_8","alias_value":"B3P4GJ26","created_at":"2026-07-04T16:14:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1999:B3P4GJ26DRJOG2WH2XCL3RMVYY","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ph/9907498","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1999-07-26T16:39:00Z","cross_cats_sorted":[],"title_canon_sha256":"6f1e4d5ab711f0a2aaf188cca80cb1bf9b445e8f98ec3b6462c41188fe995dcf","abstract_canon_sha256":"2d568032f7cf1761e9355be299687714e7fe370a0b7d46622c6641b1599033c6"},"schema_version":"1.0"},"canonical_sha256":"0edfc3275e1c52e36ac7d5c4bdc595c6081de5b9501c6d7455edb6f3d284572b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:14:24.294311Z","signature_b64":"eGevbFWsUCm9LVepPM0cRyXnDYC1T22kUWm8gsSiDAzD/L24NlJEcj6s+c7Ud/Wvmg8bmusYOWcysc9+Za16Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0edfc3275e1c52e36ac7d5c4bdc595c6081de5b9501c6d7455edb6f3d284572b","last_reissued_at":"2026-07-04T16:14:24.293874Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:14:24.293874Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ph/9907498","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":"2026-07-04T16:14:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Vsw3kSkVQ0ijvRsZm++uyA2G2drFIQvfuivr71ITQM9f2ZUDNDu2wDIG4AjCHXlHEbtVa+A1aLb3R4MpK7cbDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T23:55:10.587586Z"},"content_sha256":"8ac78e8832ca32acb7ce8acc0c3b646c5a6c49003e2f87ca497cff6484a8760a","schema_version":"1.0","event_id":"sha256:8ac78e8832ca32acb7ce8acc0c3b646c5a6c49003e2f87ca497cff6484a8760a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1999:B3P4GJ26DRJOG2WH2XCL3RMVYY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Transversity Distribution Does Not Contribute to Hard Exclusive Electroproduction of Mesons","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"J.C. Collins (Penn State), M. Diehl (DESY)","submitted_at":"1999-07-26T16:39:00Z","abstract_excerpt":"We show that in hard exclusive electroproduction, ep-->eVp, the leading-twist hard-scattering coefficient for the production of a transversely polarized vector meson V vanishes to all orders of perturbation theory. This implies that this process cannot be used to measure the skewed transversity distribution of quarks in a hadron. In contrast, a recent calculation obtained a non-zero value at NLO. We show that this calculation is incorrect because it failed to include the necessary collinear subtractions. Our method of proof also applies to other processes whose hard-scattering coefficients are"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9907498","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/9907498/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":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T16:14:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LmFSTa3VGxWq3gWFleDC/VqNEpmJ0RtOLwNUTJtoHytzABeZSi8+x4/R6poMtaaw4LuG8fEMvmt2bavvtSfkAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T23:55:10.588158Z"},"content_sha256":"1ada60f62cbc089a673aa57de41c785b4926d6e3b641fae3ef2d7b8a81ac5e8a","schema_version":"1.0","event_id":"sha256:1ada60f62cbc089a673aa57de41c785b4926d6e3b641fae3ef2d7b8a81ac5e8a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/B3P4GJ26DRJOG2WH2XCL3RMVYY/bundle.json","state_url":"https://pith.science/pith/B3P4GJ26DRJOG2WH2XCL3RMVYY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/B3P4GJ26DRJOG2WH2XCL3RMVYY/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":"2026-08-06T23:55:10Z","links":{"resolver":"https://pith.science/pith/B3P4GJ26DRJOG2WH2XCL3RMVYY","bundle":"https://pith.science/pith/B3P4GJ26DRJOG2WH2XCL3RMVYY/bundle.json","state":"https://pith.science/pith/B3P4GJ26DRJOG2WH2XCL3RMVYY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/B3P4GJ26DRJOG2WH2XCL3RMVYY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:B3P4GJ26DRJOG2WH2XCL3RMVYY","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":"2d568032f7cf1761e9355be299687714e7fe370a0b7d46622c6641b1599033c6","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1999-07-26T16:39:00Z","title_canon_sha256":"6f1e4d5ab711f0a2aaf188cca80cb1bf9b445e8f98ec3b6462c41188fe995dcf"},"schema_version":"1.0","source":{"id":"hep-ph/9907498","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9907498","created_at":"2026-07-04T16:14:24Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9907498v1","created_at":"2026-07-04T16:14:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9907498","created_at":"2026-07-04T16:14:24Z"},{"alias_kind":"pith_short_12","alias_value":"B3P4GJ26DRJO","created_at":"2026-07-04T16:14:24Z"},{"alias_kind":"pith_short_16","alias_value":"B3P4GJ26DRJOG2WH","created_at":"2026-07-04T16:14:24Z"},{"alias_kind":"pith_short_8","alias_value":"B3P4GJ26","created_at":"2026-07-04T16:14:24Z"}],"graph_snapshots":[{"event_id":"sha256:1ada60f62cbc089a673aa57de41c785b4926d6e3b641fae3ef2d7b8a81ac5e8a","target":"graph","created_at":"2026-07-04T16:14:24Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/hep-ph/9907498/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We show that in hard exclusive electroproduction, ep-->eVp, the leading-twist hard-scattering coefficient for the production of a transversely polarized vector meson V vanishes to all orders of perturbation theory. This implies that this process cannot be used to measure the skewed transversity distribution of quarks in a hadron. In contrast, a recent calculation obtained a non-zero value at NLO. We show that this calculation is incorrect because it failed to include the necessary collinear subtractions. Our method of proof also applies to other processes whose hard-scattering coefficients are","authors_text":"J.C. Collins (Penn State), M. Diehl (DESY)","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"1999-07-26T16:39:00Z","title":"Transversity Distribution Does Not Contribute to Hard Exclusive Electroproduction of Mesons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9907498","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":"sha256:8ac78e8832ca32acb7ce8acc0c3b646c5a6c49003e2f87ca497cff6484a8760a","target":"record","created_at":"2026-07-04T16:14:24Z","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":"2d568032f7cf1761e9355be299687714e7fe370a0b7d46622c6641b1599033c6","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1999-07-26T16:39:00Z","title_canon_sha256":"6f1e4d5ab711f0a2aaf188cca80cb1bf9b445e8f98ec3b6462c41188fe995dcf"},"schema_version":"1.0","source":{"id":"hep-ph/9907498","kind":"arxiv","version":1}},"canonical_sha256":"0edfc3275e1c52e36ac7d5c4bdc595c6081de5b9501c6d7455edb6f3d284572b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0edfc3275e1c52e36ac7d5c4bdc595c6081de5b9501c6d7455edb6f3d284572b","first_computed_at":"2026-07-04T16:14:24.293874Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:14:24.293874Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eGevbFWsUCm9LVepPM0cRyXnDYC1T22kUWm8gsSiDAzD/L24NlJEcj6s+c7Ud/Wvmg8bmusYOWcysc9+Za16Cg==","signature_status":"signed_v1","signed_at":"2026-07-04T16:14:24.294311Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/9907498","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8ac78e8832ca32acb7ce8acc0c3b646c5a6c49003e2f87ca497cff6484a8760a","sha256:1ada60f62cbc089a673aa57de41c785b4926d6e3b641fae3ef2d7b8a81ac5e8a"],"state_sha256":"2cbefcc3082b9b2ecd9d850c600ee93a8811cd37a0560bdde8f965676079ffb0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"v+mRMcv5sAJVALtwVDmurRon+RIw7p7kgFvLo7em420oqlbPa+0RRiF2IbGXxVxR+TyY52n6QHtR5ZWVkd2RCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T23:55:10.596298Z","bundle_sha256":"9f0d5459367e485d8567510e78aa0a447c5134181d4652fba702a98dfd4bc567"}}