{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:64Z7765B4D7IPGGJAU6W3MZWQN","short_pith_number":"pith:64Z7765B","canonical_record":{"source":{"id":"0912.1311","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-12-07T19:04:51Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"6efa6b68091f369cc1916e99c37d728706732a818b540ad3daf86a4ae00bfb39","abstract_canon_sha256":"90bbaacfb9408c9eacf6aa7f28a5487a3440cc20bc6e9fb3c132ed940519d889"},"schema_version":"1.0"},"canonical_sha256":"f733fffba1e0fe8798c9053d6db336834491061fe259082f4b8d73f0febc1957","source":{"kind":"arxiv","id":"0912.1311","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0912.1311","created_at":"2026-07-04T17:25:07Z"},{"alias_kind":"arxiv_version","alias_value":"0912.1311v1","created_at":"2026-07-04T17:25:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0912.1311","created_at":"2026-07-04T17:25:07Z"},{"alias_kind":"pith_short_12","alias_value":"64Z7765B4D7I","created_at":"2026-07-04T17:25:07Z"},{"alias_kind":"pith_short_16","alias_value":"64Z7765B4D7IPGGJ","created_at":"2026-07-04T17:25:07Z"},{"alias_kind":"pith_short_8","alias_value":"64Z7765B","created_at":"2026-07-04T17:25:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:64Z7765B4D7IPGGJAU6W3MZWQN","target":"record","payload":{"canonical_record":{"source":{"id":"0912.1311","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-12-07T19:04:51Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"6efa6b68091f369cc1916e99c37d728706732a818b540ad3daf86a4ae00bfb39","abstract_canon_sha256":"90bbaacfb9408c9eacf6aa7f28a5487a3440cc20bc6e9fb3c132ed940519d889"},"schema_version":"1.0"},"canonical_sha256":"f733fffba1e0fe8798c9053d6db336834491061fe259082f4b8d73f0febc1957","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:25:07.388650Z","signature_b64":"J9l0NyVl+aTORFtp5qBfg3E9k1c8UozLWTtachW6a06YCsa2EBoogzPCIlXD2rkgp0fhhOq6/94jKUBZ+aK/BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f733fffba1e0fe8798c9053d6db336834491061fe259082f4b8d73f0febc1957","last_reissued_at":"2026-07-04T17:25:07.388224Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:25:07.388224Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0912.1311","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":"2026-07-04T17:25:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W2iVASkzrNAMcjTvytfJg+Q6H4GFVPuBSs3y1rTXB2CsaCQoQ3hUaF/P3N+ajyIp/C12reoFTWAEip7zNBAlBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T13:00:39.327798Z"},"content_sha256":"b3681a91b73f873558228304e7c74d133e47eb422c45ffdeef17ec35f2a8a98b","schema_version":"1.0","event_id":"sha256:b3681a91b73f873558228304e7c74d133e47eb422c45ffdeef17ec35f2a8a98b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:64Z7765B4D7IPGGJAU6W3MZWQN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fragmentations Functions in Nuclear Media","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"hep-ph","authors_text":"Marco Stratmann, Pia Zurita, Rodolfo Sassot","submitted_at":"2009-12-07T19:04:51Z","abstract_excerpt":"We perform a detailed phenomenological analysis of how well hadronization in nuclear environments can be described in terms of effective fragmentation functions. The medium modified fragmentation functions are assumed to factorize from the partonic scattering cross sections and evolve in the hard scale in the same way as the standard or vacuum fragmentation functions. Based on precise data on semi-inclusive deep-inelastic scattering off nuclei and hadron production in deuteron-gold collisions, we extract sets of effective fragmentation functions for pions and kaons at NLO accuracy. The obtaine"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0912.1311","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/0912.1311/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":"2026-07-04T17:25:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mCbRCSqMQOlY7bEjb2shuim3q/bq8aZ3EyAoJMiiduzrEJWeqlq7nWMhJbMgCb0+3mLZ0Hzy4ab0gi06uDCKBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T13:00:39.328352Z"},"content_sha256":"a52dc02e7b1d3b05b2ea140eba4e8c0136f6f9a25196b34033c36aca08e58fec","schema_version":"1.0","event_id":"sha256:a52dc02e7b1d3b05b2ea140eba4e8c0136f6f9a25196b34033c36aca08e58fec"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/64Z7765B4D7IPGGJAU6W3MZWQN/bundle.json","state_url":"https://pith.science/pith/64Z7765B4D7IPGGJAU6W3MZWQN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/64Z7765B4D7IPGGJAU6W3MZWQN/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":"2026-08-05T13:00:39Z","links":{"resolver":"https://pith.science/pith/64Z7765B4D7IPGGJAU6W3MZWQN","bundle":"https://pith.science/pith/64Z7765B4D7IPGGJAU6W3MZWQN/bundle.json","state":"https://pith.science/pith/64Z7765B4D7IPGGJAU6W3MZWQN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/64Z7765B4D7IPGGJAU6W3MZWQN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:64Z7765B4D7IPGGJAU6W3MZWQN","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":"90bbaacfb9408c9eacf6aa7f28a5487a3440cc20bc6e9fb3c132ed940519d889","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-12-07T19:04:51Z","title_canon_sha256":"6efa6b68091f369cc1916e99c37d728706732a818b540ad3daf86a4ae00bfb39"},"schema_version":"1.0","source":{"id":"0912.1311","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0912.1311","created_at":"2026-07-04T17:25:07Z"},{"alias_kind":"arxiv_version","alias_value":"0912.1311v1","created_at":"2026-07-04T17:25:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0912.1311","created_at":"2026-07-04T17:25:07Z"},{"alias_kind":"pith_short_12","alias_value":"64Z7765B4D7I","created_at":"2026-07-04T17:25:07Z"},{"alias_kind":"pith_short_16","alias_value":"64Z7765B4D7IPGGJ","created_at":"2026-07-04T17:25:07Z"},{"alias_kind":"pith_short_8","alias_value":"64Z7765B","created_at":"2026-07-04T17:25:07Z"}],"graph_snapshots":[{"event_id":"sha256:a52dc02e7b1d3b05b2ea140eba4e8c0136f6f9a25196b34033c36aca08e58fec","target":"graph","created_at":"2026-07-04T17:25:07Z","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/0912.1311/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We perform a detailed phenomenological analysis of how well hadronization in nuclear environments can be described in terms of effective fragmentation functions. The medium modified fragmentation functions are assumed to factorize from the partonic scattering cross sections and evolve in the hard scale in the same way as the standard or vacuum fragmentation functions. Based on precise data on semi-inclusive deep-inelastic scattering off nuclei and hadron production in deuteron-gold collisions, we extract sets of effective fragmentation functions for pions and kaons at NLO accuracy. The obtaine","authors_text":"Marco Stratmann, Pia Zurita, Rodolfo Sassot","cross_cats":["nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-12-07T19:04:51Z","title":"Fragmentations Functions in Nuclear Media"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0912.1311","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:b3681a91b73f873558228304e7c74d133e47eb422c45ffdeef17ec35f2a8a98b","target":"record","created_at":"2026-07-04T17:25:07Z","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":"90bbaacfb9408c9eacf6aa7f28a5487a3440cc20bc6e9fb3c132ed940519d889","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-12-07T19:04:51Z","title_canon_sha256":"6efa6b68091f369cc1916e99c37d728706732a818b540ad3daf86a4ae00bfb39"},"schema_version":"1.0","source":{"id":"0912.1311","kind":"arxiv","version":1}},"canonical_sha256":"f733fffba1e0fe8798c9053d6db336834491061fe259082f4b8d73f0febc1957","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f733fffba1e0fe8798c9053d6db336834491061fe259082f4b8d73f0febc1957","first_computed_at":"2026-07-04T17:25:07.388224Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:25:07.388224Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"J9l0NyVl+aTORFtp5qBfg3E9k1c8UozLWTtachW6a06YCsa2EBoogzPCIlXD2rkgp0fhhOq6/94jKUBZ+aK/BA==","signature_status":"signed_v1","signed_at":"2026-07-04T17:25:07.388650Z","signed_message":"canonical_sha256_bytes"},"source_id":"0912.1311","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b3681a91b73f873558228304e7c74d133e47eb422c45ffdeef17ec35f2a8a98b","sha256:a52dc02e7b1d3b05b2ea140eba4e8c0136f6f9a25196b34033c36aca08e58fec"],"state_sha256":"2509b151783f6885e0e6fa220a951b9f447a337fc0466df42a42cf1ce6c8ad38"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ykuDPXEC+bJnvVBIZ7egYaFiKAxNJxURDSk+yNbMDVcYJ6xn6xCn0TClFNep1p4tqaLrnyUd5p+ejm1pAGS3DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T13:00:39.332463Z","bundle_sha256":"a294f8b5d587b5fbaedb9583b4e5dca7ded8434226ecc9d9e35274ad2d778e5d"}}