{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:5MQJ7AKVBKOHJML2MUWQ5KUVGN","short_pith_number":"pith:5MQJ7AKV","canonical_record":{"source":{"id":"0909.5593","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-09-30T12:19:00Z","cross_cats_sorted":[],"title_canon_sha256":"19982a023068261b438a28f18806b15d6c6bb69c09247216c8ced05bc4e0080c","abstract_canon_sha256":"7ca5e8105f2b9807cc8302df3368c99350f3868fba0a9e9c8fb88e92d4c7223f"},"schema_version":"1.0"},"canonical_sha256":"eb209f81550a9c74b17a652d0eaa953351a2765ab1d7ed6d00db3b12670e35d5","source":{"kind":"arxiv","id":"0909.5593","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0909.5593","created_at":"2026-05-18T04:31:41Z"},{"alias_kind":"arxiv_version","alias_value":"0909.5593v1","created_at":"2026-05-18T04:31:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.5593","created_at":"2026-05-18T04:31:41Z"},{"alias_kind":"pith_short_12","alias_value":"5MQJ7AKVBKOH","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"5MQJ7AKVBKOHJML2","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"5MQJ7AKV","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:5MQJ7AKVBKOHJML2MUWQ5KUVGN","target":"record","payload":{"canonical_record":{"source":{"id":"0909.5593","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-09-30T12:19:00Z","cross_cats_sorted":[],"title_canon_sha256":"19982a023068261b438a28f18806b15d6c6bb69c09247216c8ced05bc4e0080c","abstract_canon_sha256":"7ca5e8105f2b9807cc8302df3368c99350f3868fba0a9e9c8fb88e92d4c7223f"},"schema_version":"1.0"},"canonical_sha256":"eb209f81550a9c74b17a652d0eaa953351a2765ab1d7ed6d00db3b12670e35d5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:31:41.515885Z","signature_b64":"0ydYB5DFNSk+n1RUiRV/dkTePMLh2P8F/xohePNXNd/bQeB3nwxI5N82gHmfMePP9mUmpjqFRD75o3xlKmdiCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"eb209f81550a9c74b17a652d0eaa953351a2765ab1d7ed6d00db3b12670e35d5","last_reissued_at":"2026-05-18T04:31:41.515258Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:31:41.515258Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0909.5593","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":"2026-05-18T04:31:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OYbzBYM9UIH/7fhVR9Ufb7uWVnKe2SuCoRTOOKmZATqXmA41GuumI5NanguLwCtdCaBh9Mb90w9tx6uESsAIBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T11:34:34.974005Z"},"content_sha256":"19766f913d888a0645f926f6cea7f90a06f2880ba9954fd26f0cd972d0e18e5e","schema_version":"1.0","event_id":"sha256:19766f913d888a0645f926f6cea7f90a06f2880ba9954fd26f0cd972d0e18e5e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:5MQJ7AKVBKOHJML2MUWQ5KUVGN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Coherent Parton Showers with Local Recoils","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Simon Platzer, Stefan Gieseke","submitted_at":"2009-09-30T12:19:00Z","abstract_excerpt":"We outline a new formalism for dipole-type parton showers which maintain exact energy-momentum conservation at each step of the evolution. Particular emphasis is put on the coherence properties, the level at which recoil effects do enter and the role of transverse momentum generation from initial state radiation. The formulated algorithm is shown to correctly incorporate coherence for soft gluon radiation. Furthermore, it is well suited for easing matching to next-to-leading order calculations."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.5593","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":"2026-05-18T04:31:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hVIzVOgXo1Ar4NDq5cDKRJu0Cw5ufLtrHz8uNFZzKwfZB0oqG4cjMXjp3CemDUl7HSfz3REMnCYBtLiQYb+ACQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T11:34:34.974386Z"},"content_sha256":"9d8749fa8eaab5dd966d5b61556fceb430a567211b0cd6685af2af41e79b6612","schema_version":"1.0","event_id":"sha256:9d8749fa8eaab5dd966d5b61556fceb430a567211b0cd6685af2af41e79b6612"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5MQJ7AKVBKOHJML2MUWQ5KUVGN/bundle.json","state_url":"https://pith.science/pith/5MQJ7AKVBKOHJML2MUWQ5KUVGN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5MQJ7AKVBKOHJML2MUWQ5KUVGN/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":"2026-06-02T11:34:34Z","links":{"resolver":"https://pith.science/pith/5MQJ7AKVBKOHJML2MUWQ5KUVGN","bundle":"https://pith.science/pith/5MQJ7AKVBKOHJML2MUWQ5KUVGN/bundle.json","state":"https://pith.science/pith/5MQJ7AKVBKOHJML2MUWQ5KUVGN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5MQJ7AKVBKOHJML2MUWQ5KUVGN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:5MQJ7AKVBKOHJML2MUWQ5KUVGN","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":"7ca5e8105f2b9807cc8302df3368c99350f3868fba0a9e9c8fb88e92d4c7223f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-09-30T12:19:00Z","title_canon_sha256":"19982a023068261b438a28f18806b15d6c6bb69c09247216c8ced05bc4e0080c"},"schema_version":"1.0","source":{"id":"0909.5593","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0909.5593","created_at":"2026-05-18T04:31:41Z"},{"alias_kind":"arxiv_version","alias_value":"0909.5593v1","created_at":"2026-05-18T04:31:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.5593","created_at":"2026-05-18T04:31:41Z"},{"alias_kind":"pith_short_12","alias_value":"5MQJ7AKVBKOH","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"5MQJ7AKVBKOHJML2","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"5MQJ7AKV","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:9d8749fa8eaab5dd966d5b61556fceb430a567211b0cd6685af2af41e79b6612","target":"graph","created_at":"2026-05-18T04:31:41Z","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 outline a new formalism for dipole-type parton showers which maintain exact energy-momentum conservation at each step of the evolution. Particular emphasis is put on the coherence properties, the level at which recoil effects do enter and the role of transverse momentum generation from initial state radiation. The formulated algorithm is shown to correctly incorporate coherence for soft gluon radiation. Furthermore, it is well suited for easing matching to next-to-leading order calculations.","authors_text":"Simon Platzer, Stefan Gieseke","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-09-30T12:19:00Z","title":"Coherent Parton Showers with Local Recoils"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.5593","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":"sha256:19766f913d888a0645f926f6cea7f90a06f2880ba9954fd26f0cd972d0e18e5e","target":"record","created_at":"2026-05-18T04:31:41Z","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":"7ca5e8105f2b9807cc8302df3368c99350f3868fba0a9e9c8fb88e92d4c7223f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-09-30T12:19:00Z","title_canon_sha256":"19982a023068261b438a28f18806b15d6c6bb69c09247216c8ced05bc4e0080c"},"schema_version":"1.0","source":{"id":"0909.5593","kind":"arxiv","version":1}},"canonical_sha256":"eb209f81550a9c74b17a652d0eaa953351a2765ab1d7ed6d00db3b12670e35d5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"eb209f81550a9c74b17a652d0eaa953351a2765ab1d7ed6d00db3b12670e35d5","first_computed_at":"2026-05-18T04:31:41.515258Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:31:41.515258Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0ydYB5DFNSk+n1RUiRV/dkTePMLh2P8F/xohePNXNd/bQeB3nwxI5N82gHmfMePP9mUmpjqFRD75o3xlKmdiCA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:31:41.515885Z","signed_message":"canonical_sha256_bytes"},"source_id":"0909.5593","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:19766f913d888a0645f926f6cea7f90a06f2880ba9954fd26f0cd972d0e18e5e","sha256:9d8749fa8eaab5dd966d5b61556fceb430a567211b0cd6685af2af41e79b6612"],"state_sha256":"a6b3b8fe70663130504397ba6ae47769633381ae49fd95f44f9b2dd0a92cd8c3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2HSzDB64P5GeW698leZUgmAbnmVrNI++dQR47BgPziJ0M2idJBXm1cpQG39OCXMY9AkQICLqRfIOQ2qRnGNnBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T11:34:34.976223Z","bundle_sha256":"afa241250b744b2f19a6d9ac905dc5e12c111463fb0173bfa58963477cb1f1e1"}}