{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:7CNLKKYN5UKAVTXNVOMJHNGLUB","short_pith_number":"pith:7CNLKKYN","canonical_record":{"source":{"id":"1808.02395","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-08-07T14:25:22Z","cross_cats_sorted":[],"title_canon_sha256":"0ccf2ccc81f5458a2ad189603a65a1d853477657ed3be5228d69b75aaf1ecc91","abstract_canon_sha256":"d9f81a465fb9083566c09895708884e0a9f6855ff640864e8ebf00c85323eac8"},"schema_version":"1.0"},"canonical_sha256":"f89ab52b0ded140aceedab9893b4cba07f5871fe4edd42ec2fe176094d815453","source":{"kind":"arxiv","id":"1808.02395","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.02395","created_at":"2026-05-17T23:56:33Z"},{"alias_kind":"arxiv_version","alias_value":"1808.02395v2","created_at":"2026-05-17T23:56:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.02395","created_at":"2026-05-17T23:56:33Z"},{"alias_kind":"pith_short_12","alias_value":"7CNLKKYN5UKA","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"7CNLKKYN5UKAVTXN","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"7CNLKKYN","created_at":"2026-05-18T12:32:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:7CNLKKYN5UKAVTXNVOMJHNGLUB","target":"record","payload":{"canonical_record":{"source":{"id":"1808.02395","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-08-07T14:25:22Z","cross_cats_sorted":[],"title_canon_sha256":"0ccf2ccc81f5458a2ad189603a65a1d853477657ed3be5228d69b75aaf1ecc91","abstract_canon_sha256":"d9f81a465fb9083566c09895708884e0a9f6855ff640864e8ebf00c85323eac8"},"schema_version":"1.0"},"canonical_sha256":"f89ab52b0ded140aceedab9893b4cba07f5871fe4edd42ec2fe176094d815453","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:56:33.674242Z","signature_b64":"OhINod/xm9LN/D6Cgn6LOVaTWhTBNp5EO9xdmsVhkJNbQTJQU5+YhCio58WG1LukQDjOZ6C3HjnexqADx4q6Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f89ab52b0ded140aceedab9893b4cba07f5871fe4edd42ec2fe176094d815453","last_reissued_at":"2026-05-17T23:56:33.673570Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:56:33.673570Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.02395","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:56:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e3kzAem8BzVV2qnq4gZOYt9PDCuJBwBV5/h40x0pXrByEf/dXJ+2r/ItsQhwGpH5Ba1EJS7I3OlHG6/hAmnqCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:08:12.898693Z"},"content_sha256":"81133f6aa23da79b56b29cb47d828c9b38a2287e7ebe490b1e625c9591bc3f5c","schema_version":"1.0","event_id":"sha256:81133f6aa23da79b56b29cb47d828c9b38a2287e7ebe490b1e625c9591bc3f5c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:7CNLKKYN5UKAVTXNVOMJHNGLUB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Unintegrated gluon distribution from forward polarized $\\rho$-electroproduction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Alessandro Papa, Andr\\`ee Dafne Bolognino, Dmitry Yu. Ivanov, Francesco Giovanni Celiberto","submitted_at":"2018-08-07T14:25:22Z","abstract_excerpt":"We present here some arguments to support our suggestion that data on the helicity structure for the hard exclusive electroproduction of $\\rho$ mesons at HERA (and in possible future high-energy electron-proton colliders) provide useful information to constrain the $\\kappa$-shape of the unintegrated gluon distribution in the proton."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.02395","kind":"arxiv","version":2},"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":"2026-05-17T23:56:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Sf4IUl60jyCq1UZx3KczEh9i8WJTNHOT/UgRtISMMrlxrzB9xLnVbB47uJj5+XjA3RIYAfdpj40ZTL8JgD17Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:08:12.899333Z"},"content_sha256":"69b6f5e6cf62fdd439c22399e3d3c8d28134bddc1ae5ca0ec6af5f7328c78639","schema_version":"1.0","event_id":"sha256:69b6f5e6cf62fdd439c22399e3d3c8d28134bddc1ae5ca0ec6af5f7328c78639"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7CNLKKYN5UKAVTXNVOMJHNGLUB/bundle.json","state_url":"https://pith.science/pith/7CNLKKYN5UKAVTXNVOMJHNGLUB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7CNLKKYN5UKAVTXNVOMJHNGLUB/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":"2026-05-26T18:08:12Z","links":{"resolver":"https://pith.science/pith/7CNLKKYN5UKAVTXNVOMJHNGLUB","bundle":"https://pith.science/pith/7CNLKKYN5UKAVTXNVOMJHNGLUB/bundle.json","state":"https://pith.science/pith/7CNLKKYN5UKAVTXNVOMJHNGLUB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7CNLKKYN5UKAVTXNVOMJHNGLUB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:7CNLKKYN5UKAVTXNVOMJHNGLUB","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":"d9f81a465fb9083566c09895708884e0a9f6855ff640864e8ebf00c85323eac8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-08-07T14:25:22Z","title_canon_sha256":"0ccf2ccc81f5458a2ad189603a65a1d853477657ed3be5228d69b75aaf1ecc91"},"schema_version":"1.0","source":{"id":"1808.02395","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.02395","created_at":"2026-05-17T23:56:33Z"},{"alias_kind":"arxiv_version","alias_value":"1808.02395v2","created_at":"2026-05-17T23:56:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.02395","created_at":"2026-05-17T23:56:33Z"},{"alias_kind":"pith_short_12","alias_value":"7CNLKKYN5UKA","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"7CNLKKYN5UKAVTXN","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"7CNLKKYN","created_at":"2026-05-18T12:32:11Z"}],"graph_snapshots":[{"event_id":"sha256:69b6f5e6cf62fdd439c22399e3d3c8d28134bddc1ae5ca0ec6af5f7328c78639","target":"graph","created_at":"2026-05-17T23:56:33Z","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 present here some arguments to support our suggestion that data on the helicity structure for the hard exclusive electroproduction of $\\rho$ mesons at HERA (and in possible future high-energy electron-proton colliders) provide useful information to constrain the $\\kappa$-shape of the unintegrated gluon distribution in the proton.","authors_text":"Alessandro Papa, Andr\\`ee Dafne Bolognino, Dmitry Yu. Ivanov, Francesco Giovanni Celiberto","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-08-07T14:25:22Z","title":"Unintegrated gluon distribution from forward polarized $\\rho$-electroproduction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.02395","kind":"arxiv","version":2},"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":"sha256:81133f6aa23da79b56b29cb47d828c9b38a2287e7ebe490b1e625c9591bc3f5c","target":"record","created_at":"2026-05-17T23:56:33Z","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":"d9f81a465fb9083566c09895708884e0a9f6855ff640864e8ebf00c85323eac8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-08-07T14:25:22Z","title_canon_sha256":"0ccf2ccc81f5458a2ad189603a65a1d853477657ed3be5228d69b75aaf1ecc91"},"schema_version":"1.0","source":{"id":"1808.02395","kind":"arxiv","version":2}},"canonical_sha256":"f89ab52b0ded140aceedab9893b4cba07f5871fe4edd42ec2fe176094d815453","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f89ab52b0ded140aceedab9893b4cba07f5871fe4edd42ec2fe176094d815453","first_computed_at":"2026-05-17T23:56:33.673570Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:56:33.673570Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OhINod/xm9LN/D6Cgn6LOVaTWhTBNp5EO9xdmsVhkJNbQTJQU5+YhCio58WG1LukQDjOZ6C3HjnexqADx4q6Cg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:56:33.674242Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.02395","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:81133f6aa23da79b56b29cb47d828c9b38a2287e7ebe490b1e625c9591bc3f5c","sha256:69b6f5e6cf62fdd439c22399e3d3c8d28134bddc1ae5ca0ec6af5f7328c78639"],"state_sha256":"4314e0e0a44327b22312b5f6f239619855399088f8447857aeaed701c9fc51d4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l4kyHj9PueMLE8YoRn1hiiVByNFBtfIdgLOnj7JbzKp43OcO7nVDIGYATKGpRYgM9sScos4/YpzeEjElfo0xCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T18:08:12.902423Z","bundle_sha256":"d5c28208d2b4fb083788cee0ad69acbe59d23ffb4fe69d8ce242e8cb4f8cf092"}}