{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:RL3CKG6GFKMKKPU4TBMA6E6XAX","short_pith_number":"pith:RL3CKG6G","canonical_record":{"source":{"id":"1901.04519","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-01-14T19:06:06Z","cross_cats_sorted":[],"title_canon_sha256":"cc15b462ca157e10485bdb7a91d5b39a0737a260a8d57b577f8ec650a910795c","abstract_canon_sha256":"2775b2c52b85e366dee1c7f8c02e0cb1a0e1a2c49174b39ec916cab8bbc82a55"},"schema_version":"1.0"},"canonical_sha256":"8af6251bc62a98a53e9c98580f13d705cc02d5c48a7dd6875952f14cfa6dcfea","source":{"kind":"arxiv","id":"1901.04519","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.04519","created_at":"2026-05-17T23:42:24Z"},{"alias_kind":"arxiv_version","alias_value":"1901.04519v2","created_at":"2026-05-17T23:42:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.04519","created_at":"2026-05-17T23:42:24Z"},{"alias_kind":"pith_short_12","alias_value":"RL3CKG6GFKMK","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_16","alias_value":"RL3CKG6GFKMKKPU4","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_8","alias_value":"RL3CKG6G","created_at":"2026-05-18T12:33:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:RL3CKG6GFKMKKPU4TBMA6E6XAX","target":"record","payload":{"canonical_record":{"source":{"id":"1901.04519","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-01-14T19:06:06Z","cross_cats_sorted":[],"title_canon_sha256":"cc15b462ca157e10485bdb7a91d5b39a0737a260a8d57b577f8ec650a910795c","abstract_canon_sha256":"2775b2c52b85e366dee1c7f8c02e0cb1a0e1a2c49174b39ec916cab8bbc82a55"},"schema_version":"1.0"},"canonical_sha256":"8af6251bc62a98a53e9c98580f13d705cc02d5c48a7dd6875952f14cfa6dcfea","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:42:24.680019Z","signature_b64":"pUwLTdzNDfXTBkdvM+31fJGY0mIUuWog9ehPODZWLMJ+Zf6ary6tTwSU0mFg+DpSav40dDORELpXqE39hzwUDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8af6251bc62a98a53e9c98580f13d705cc02d5c48a7dd6875952f14cfa6dcfea","last_reissued_at":"2026-05-17T23:42:24.679353Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:42:24.679353Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.04519","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":"2026-05-17T23:42:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"c9W7brNA8WKl80QCoOHxFZ0LLpDIQZWhDDJ+qn50Y6WIzV90bzW+4xmESBemcurcosamsD/saN1l30yEKU0rAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T09:30:16.472616Z"},"content_sha256":"8ab784a32370c7ce2703a46b620d55230e894b82d24d8ee5bf9db04dfacf0d4e","schema_version":"1.0","event_id":"sha256:8ab784a32370c7ce2703a46b620d55230e894b82d24d8ee5bf9db04dfacf0d4e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:RL3CKG6GFKMKKPU4TBMA6E6XAX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Collinear matching for Sivers function at next-to-leading order","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Alexey Vladimirov, Andrey Tarasov, Ignazio Scimemi","submitted_at":"2019-01-14T19:06:06Z","abstract_excerpt":"We evaluate the light-cone operator product expansion for the unpolarized transverse momentum dependent (TMD) operator in the background-field technique up twist-3 inclusively. The next-to-leading order (NLO) matching coefficient for the Sivers function is derived. The method, as well as many details of the calculation, are presented."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.04519","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":"2026-05-17T23:42:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KsZPGCnlJVUaOIg5IcLXB7SsdrUUWrlRe04coq3e2s/9PNEYqLw0yLmB1OVeFcJB1ccKMZ+WFMfd/ScS4ELeCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T09:30:16.473151Z"},"content_sha256":"13b045309fd9cce5c867b2f1d690384021096c78bb956522e546303a4f3b7ae6","schema_version":"1.0","event_id":"sha256:13b045309fd9cce5c867b2f1d690384021096c78bb956522e546303a4f3b7ae6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RL3CKG6GFKMKKPU4TBMA6E6XAX/bundle.json","state_url":"https://pith.science/pith/RL3CKG6GFKMKKPU4TBMA6E6XAX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RL3CKG6GFKMKKPU4TBMA6E6XAX/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":"2026-05-31T09:30:16Z","links":{"resolver":"https://pith.science/pith/RL3CKG6GFKMKKPU4TBMA6E6XAX","bundle":"https://pith.science/pith/RL3CKG6GFKMKKPU4TBMA6E6XAX/bundle.json","state":"https://pith.science/pith/RL3CKG6GFKMKKPU4TBMA6E6XAX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RL3CKG6GFKMKKPU4TBMA6E6XAX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:RL3CKG6GFKMKKPU4TBMA6E6XAX","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":"2775b2c52b85e366dee1c7f8c02e0cb1a0e1a2c49174b39ec916cab8bbc82a55","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-01-14T19:06:06Z","title_canon_sha256":"cc15b462ca157e10485bdb7a91d5b39a0737a260a8d57b577f8ec650a910795c"},"schema_version":"1.0","source":{"id":"1901.04519","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.04519","created_at":"2026-05-17T23:42:24Z"},{"alias_kind":"arxiv_version","alias_value":"1901.04519v2","created_at":"2026-05-17T23:42:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.04519","created_at":"2026-05-17T23:42:24Z"},{"alias_kind":"pith_short_12","alias_value":"RL3CKG6GFKMK","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_16","alias_value":"RL3CKG6GFKMKKPU4","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_8","alias_value":"RL3CKG6G","created_at":"2026-05-18T12:33:27Z"}],"graph_snapshots":[{"event_id":"sha256:13b045309fd9cce5c867b2f1d690384021096c78bb956522e546303a4f3b7ae6","target":"graph","created_at":"2026-05-17T23:42:24Z","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"},"paper":{"abstract_excerpt":"We evaluate the light-cone operator product expansion for the unpolarized transverse momentum dependent (TMD) operator in the background-field technique up twist-3 inclusively. The next-to-leading order (NLO) matching coefficient for the Sivers function is derived. The method, as well as many details of the calculation, are presented.","authors_text":"Alexey Vladimirov, Andrey Tarasov, Ignazio Scimemi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-01-14T19:06:06Z","title":"Collinear matching for Sivers function at next-to-leading order"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.04519","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":"sha256:8ab784a32370c7ce2703a46b620d55230e894b82d24d8ee5bf9db04dfacf0d4e","target":"record","created_at":"2026-05-17T23:42:24Z","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":"2775b2c52b85e366dee1c7f8c02e0cb1a0e1a2c49174b39ec916cab8bbc82a55","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-01-14T19:06:06Z","title_canon_sha256":"cc15b462ca157e10485bdb7a91d5b39a0737a260a8d57b577f8ec650a910795c"},"schema_version":"1.0","source":{"id":"1901.04519","kind":"arxiv","version":2}},"canonical_sha256":"8af6251bc62a98a53e9c98580f13d705cc02d5c48a7dd6875952f14cfa6dcfea","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8af6251bc62a98a53e9c98580f13d705cc02d5c48a7dd6875952f14cfa6dcfea","first_computed_at":"2026-05-17T23:42:24.679353Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:42:24.679353Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pUwLTdzNDfXTBkdvM+31fJGY0mIUuWog9ehPODZWLMJ+Zf6ary6tTwSU0mFg+DpSav40dDORELpXqE39hzwUDA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:42:24.680019Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.04519","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8ab784a32370c7ce2703a46b620d55230e894b82d24d8ee5bf9db04dfacf0d4e","sha256:13b045309fd9cce5c867b2f1d690384021096c78bb956522e546303a4f3b7ae6"],"state_sha256":"0e6eebecf93a9acc5ef00c4a73977de3866cf42b52e296df34034f21a02535d5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mqbdrmKPj0u0sMY7m4sg0sgCnmrZTUk/NXSxLg1Y1SNUJyjOY/wfuaHqGOrh8HzvpujUypLhNrlWuybRCLofAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T09:30:16.475697Z","bundle_sha256":"ba08ef545b7456297d6c814b5184c9c0ee3717f80ff1025b76cb9a21ca1338cb"}}