{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:XMNGOF66DLOPC2D246NSAO7AH7","short_pith_number":"pith:XMNGOF66","canonical_record":{"source":{"id":"1605.01338","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2016-05-04T16:36:01Z","cross_cats_sorted":[],"title_canon_sha256":"c5de213a061205b011861e9356b2f73e64c4f6f08056d1f3f358bbdbd35c7b8a","abstract_canon_sha256":"71dd925afc70fcbd58ead8d2c11dc0fd85ac658b77714b74f64e6e584477255f"},"schema_version":"1.0"},"canonical_sha256":"bb1a6717de1adcf1687ae79b203be03fc662e1f8e0d82c3ecc7fe6c12766e096","source":{"kind":"arxiv","id":"1605.01338","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.01338","created_at":"2026-05-18T00:54:36Z"},{"alias_kind":"arxiv_version","alias_value":"1605.01338v1","created_at":"2026-05-18T00:54:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.01338","created_at":"2026-05-18T00:54:36Z"},{"alias_kind":"pith_short_12","alias_value":"XMNGOF66DLOP","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"XMNGOF66DLOPC2D2","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"XMNGOF66","created_at":"2026-05-18T12:30:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:XMNGOF66DLOPC2D246NSAO7AH7","target":"record","payload":{"canonical_record":{"source":{"id":"1605.01338","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2016-05-04T16:36:01Z","cross_cats_sorted":[],"title_canon_sha256":"c5de213a061205b011861e9356b2f73e64c4f6f08056d1f3f358bbdbd35c7b8a","abstract_canon_sha256":"71dd925afc70fcbd58ead8d2c11dc0fd85ac658b77714b74f64e6e584477255f"},"schema_version":"1.0"},"canonical_sha256":"bb1a6717de1adcf1687ae79b203be03fc662e1f8e0d82c3ecc7fe6c12766e096","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:54:36.658620Z","signature_b64":"qtT3wc+4LhWNPtcSRYoXiR39A+GbsxC1i4n7bw+1XMo6/8VHGtNfB2ja/t9GUbUkhfOuf27S9YZ8e0Udat+DDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bb1a6717de1adcf1687ae79b203be03fc662e1f8e0d82c3ecc7fe6c12766e096","last_reissued_at":"2026-05-18T00:54:36.658096Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:54:36.658096Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1605.01338","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":"2026-05-18T00:54:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T3e7XVKgC0xn9AibLZxboVd4Vjml+hBhProdWJTVjBYTcVU0QXkekl8cCmGuRb9N9ZvGjdVyo4L/+7NdvhAZBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T01:06:08.797778Z"},"content_sha256":"d96915a8c7fff92c48a121c077ecca82ace700c1663463290650b306c82f96c7","schema_version":"1.0","event_id":"sha256:d96915a8c7fff92c48a121c077ecca82ace700c1663463290650b306c82f96c7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:XMNGOF66DLOPC2D246NSAO7AH7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Parton Shower Uncertainties with Herwig 7: Benchmarks at Leading Order","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Andrzej Si\\'odmok, Graeme Nail, Johannes Bellm, Peter Schichtel, Simon Pl\\\"atzer","submitted_at":"2016-05-04T16:36:01Z","abstract_excerpt":"We perform a detailed study of the sources of perturbative uncertainty in parton shower predictions within the Herwig 7 event generator. We benchmark two rather different parton shower algorithms, based on angular-ordered and dipole-type evolution, against each other. We deliberately choose leading order plus parton shower as the benchmark setting to identify a controllable set of uncertainties. This will enable us to reliably assess improvements by higher-order contributions in a follow-up work."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.01338","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":"2026-05-18T00:54:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QmTvbTNSXc64AlncLQ26tNzckz+81ykRGBPa0oOD4FMuLWlVYyboUmuSS0B8YuHoWCJQsPB6abznVY9DG7fJDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T01:06:08.798430Z"},"content_sha256":"2e77366b8bc76fd56b26538cccc0c0b954da1dd31a32eff5e46c225b281e1072","schema_version":"1.0","event_id":"sha256:2e77366b8bc76fd56b26538cccc0c0b954da1dd31a32eff5e46c225b281e1072"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XMNGOF66DLOPC2D246NSAO7AH7/bundle.json","state_url":"https://pith.science/pith/XMNGOF66DLOPC2D246NSAO7AH7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XMNGOF66DLOPC2D246NSAO7AH7/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":"2026-05-19T01:06:08Z","links":{"resolver":"https://pith.science/pith/XMNGOF66DLOPC2D246NSAO7AH7","bundle":"https://pith.science/pith/XMNGOF66DLOPC2D246NSAO7AH7/bundle.json","state":"https://pith.science/pith/XMNGOF66DLOPC2D246NSAO7AH7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XMNGOF66DLOPC2D246NSAO7AH7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:XMNGOF66DLOPC2D246NSAO7AH7","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":"71dd925afc70fcbd58ead8d2c11dc0fd85ac658b77714b74f64e6e584477255f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2016-05-04T16:36:01Z","title_canon_sha256":"c5de213a061205b011861e9356b2f73e64c4f6f08056d1f3f358bbdbd35c7b8a"},"schema_version":"1.0","source":{"id":"1605.01338","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.01338","created_at":"2026-05-18T00:54:36Z"},{"alias_kind":"arxiv_version","alias_value":"1605.01338v1","created_at":"2026-05-18T00:54:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.01338","created_at":"2026-05-18T00:54:36Z"},{"alias_kind":"pith_short_12","alias_value":"XMNGOF66DLOP","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"XMNGOF66DLOPC2D2","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"XMNGOF66","created_at":"2026-05-18T12:30:51Z"}],"graph_snapshots":[{"event_id":"sha256:2e77366b8bc76fd56b26538cccc0c0b954da1dd31a32eff5e46c225b281e1072","target":"graph","created_at":"2026-05-18T00:54:36Z","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 perform a detailed study of the sources of perturbative uncertainty in parton shower predictions within the Herwig 7 event generator. We benchmark two rather different parton shower algorithms, based on angular-ordered and dipole-type evolution, against each other. We deliberately choose leading order plus parton shower as the benchmark setting to identify a controllable set of uncertainties. This will enable us to reliably assess improvements by higher-order contributions in a follow-up work.","authors_text":"Andrzej Si\\'odmok, Graeme Nail, Johannes Bellm, Peter Schichtel, Simon Pl\\\"atzer","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2016-05-04T16:36:01Z","title":"Parton Shower Uncertainties with Herwig 7: Benchmarks at Leading Order"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.01338","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:d96915a8c7fff92c48a121c077ecca82ace700c1663463290650b306c82f96c7","target":"record","created_at":"2026-05-18T00:54:36Z","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":"71dd925afc70fcbd58ead8d2c11dc0fd85ac658b77714b74f64e6e584477255f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2016-05-04T16:36:01Z","title_canon_sha256":"c5de213a061205b011861e9356b2f73e64c4f6f08056d1f3f358bbdbd35c7b8a"},"schema_version":"1.0","source":{"id":"1605.01338","kind":"arxiv","version":1}},"canonical_sha256":"bb1a6717de1adcf1687ae79b203be03fc662e1f8e0d82c3ecc7fe6c12766e096","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bb1a6717de1adcf1687ae79b203be03fc662e1f8e0d82c3ecc7fe6c12766e096","first_computed_at":"2026-05-18T00:54:36.658096Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:54:36.658096Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qtT3wc+4LhWNPtcSRYoXiR39A+GbsxC1i4n7bw+1XMo6/8VHGtNfB2ja/t9GUbUkhfOuf27S9YZ8e0Udat+DDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:54:36.658620Z","signed_message":"canonical_sha256_bytes"},"source_id":"1605.01338","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d96915a8c7fff92c48a121c077ecca82ace700c1663463290650b306c82f96c7","sha256:2e77366b8bc76fd56b26538cccc0c0b954da1dd31a32eff5e46c225b281e1072"],"state_sha256":"1b510a12e49bf05c420bd41270f3fc2ab82533d7d95acd63c8b0b64bd0596ac9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+IA7WRcddeHSXJD3DlGtcbVCvxRhs+msV32pD+SLopm6wPgJ2kzTMcoY6ND9qbhCkBfyTcKouAk+I4QBEpwcAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T01:06:08.800237Z","bundle_sha256":"e9c7bf5ebbb9efb3346a45b7958e97745ab8f55bef0e57d76385fbdfaa5e47eb"}}