{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:JWLWEPXH2Z67PIQRREYT5GPLX2","short_pith_number":"pith:JWLWEPXH","canonical_record":{"source":{"id":"2606.23845","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-06-22T18:28:15Z","cross_cats_sorted":["hep-ex","nucl-ex","nucl-th"],"title_canon_sha256":"5f211e30e153da06badf04cb1eccc0f6eaaf6c6827057d5daeb3c10a38ac7350","abstract_canon_sha256":"56061d5573525dea791f2b1bd042cb9dc648ad9e82acbc92df4e8db7d683331d"},"schema_version":"1.0"},"canonical_sha256":"4d97623ee7d67df7a21189313e99ebbebfd273d485974592b7b28d3773b512cb","source":{"kind":"arxiv","id":"2606.23845","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.23845","created_at":"2026-06-24T00:14:28Z"},{"alias_kind":"arxiv_version","alias_value":"2606.23845v1","created_at":"2026-06-24T00:14:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.23845","created_at":"2026-06-24T00:14:28Z"},{"alias_kind":"pith_short_12","alias_value":"JWLWEPXH2Z67","created_at":"2026-06-24T00:14:28Z"},{"alias_kind":"pith_short_16","alias_value":"JWLWEPXH2Z67PIQR","created_at":"2026-06-24T00:14:28Z"},{"alias_kind":"pith_short_8","alias_value":"JWLWEPXH","created_at":"2026-06-24T00:14:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:JWLWEPXH2Z67PIQRREYT5GPLX2","target":"record","payload":{"canonical_record":{"source":{"id":"2606.23845","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-06-22T18:28:15Z","cross_cats_sorted":["hep-ex","nucl-ex","nucl-th"],"title_canon_sha256":"5f211e30e153da06badf04cb1eccc0f6eaaf6c6827057d5daeb3c10a38ac7350","abstract_canon_sha256":"56061d5573525dea791f2b1bd042cb9dc648ad9e82acbc92df4e8db7d683331d"},"schema_version":"1.0"},"canonical_sha256":"4d97623ee7d67df7a21189313e99ebbebfd273d485974592b7b28d3773b512cb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-24T00:14:28.460421Z","signature_b64":"v+fyR0I2VHRIF/p4nV8roxmhKcWEhwySbSfDrW5jz9QLFkRJovFsUXjZCwDB/SSePfZJCm1++NzKyxuznSabAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4d97623ee7d67df7a21189313e99ebbebfd273d485974592b7b28d3773b512cb","last_reissued_at":"2026-06-24T00:14:28.460018Z","signature_status":"signed_v1","first_computed_at":"2026-06-24T00:14:28.460018Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.23845","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":"2026-06-24T00:14:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hF9ttg2HRF+fnIcHDfvdTPi3Tazkof7KElWvo9WdyIHUTfQNzxBEjAZF6bGfRL/gm0h3IEKbWp2sRZG4/44HDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T15:26:41.048205Z"},"content_sha256":"e77213e4e11f015db12a30de775ed7b4a3235bca7dce59ec7f78632ef636a17b","schema_version":"1.0","event_id":"sha256:e77213e4e11f015db12a30de775ed7b4a3235bca7dce59ec7f78632ef636a17b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:JWLWEPXH2Z67PIQRREYT5GPLX2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Polarized Deep-Inelastic Scattering with Spin Correlations in Herwig 7","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","nucl-ex","nucl-th"],"primary_cat":"hep-ph","authors_text":"A. Papaefstathiou, M.R. Masouminia, P. Richardson","submitted_at":"2026-06-22T18:28:15Z","abstract_excerpt":"We investigate polarized deep-inelastic scattering (DIS) in the context of fully exclusive Monte Carlo simulations for the Electron-Ion Collider (EIC). We present a next-to-leading-order (NLO) treatment of polarized DIS in Herwig 7 using the POWHEG matching scheme, including neutral-current $\\gamma/Z$ exchange and charged-current scattering. We also construct a spin-correlation treatment for NLO-matched events, first by initializing the shower from the spin-density matrix of the polarized DIS Born process and then by propagating the spin-density matrix of the accepted real-emission configurati"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.23845","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/2606.23845/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":"2026-06-24T00:14:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X/LqN/ZUO5Pu7KCfzd1ot1IXfGiFaxI/6pGbepGfeETUZrn5AK0MNwp83C37PZ0htfxrUVxN7RwiWwwTmsAcBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T15:26:41.048593Z"},"content_sha256":"2c880f298b6abd2b5c11358400b407de192acdb0fe012fc39421248171680c88","schema_version":"1.0","event_id":"sha256:2c880f298b6abd2b5c11358400b407de192acdb0fe012fc39421248171680c88"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JWLWEPXH2Z67PIQRREYT5GPLX2/bundle.json","state_url":"https://pith.science/pith/JWLWEPXH2Z67PIQRREYT5GPLX2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JWLWEPXH2Z67PIQRREYT5GPLX2/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":"2026-06-27T15:26:41Z","links":{"resolver":"https://pith.science/pith/JWLWEPXH2Z67PIQRREYT5GPLX2","bundle":"https://pith.science/pith/JWLWEPXH2Z67PIQRREYT5GPLX2/bundle.json","state":"https://pith.science/pith/JWLWEPXH2Z67PIQRREYT5GPLX2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JWLWEPXH2Z67PIQRREYT5GPLX2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:JWLWEPXH2Z67PIQRREYT5GPLX2","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":"56061d5573525dea791f2b1bd042cb9dc648ad9e82acbc92df4e8db7d683331d","cross_cats_sorted":["hep-ex","nucl-ex","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-06-22T18:28:15Z","title_canon_sha256":"5f211e30e153da06badf04cb1eccc0f6eaaf6c6827057d5daeb3c10a38ac7350"},"schema_version":"1.0","source":{"id":"2606.23845","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.23845","created_at":"2026-06-24T00:14:28Z"},{"alias_kind":"arxiv_version","alias_value":"2606.23845v1","created_at":"2026-06-24T00:14:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.23845","created_at":"2026-06-24T00:14:28Z"},{"alias_kind":"pith_short_12","alias_value":"JWLWEPXH2Z67","created_at":"2026-06-24T00:14:28Z"},{"alias_kind":"pith_short_16","alias_value":"JWLWEPXH2Z67PIQR","created_at":"2026-06-24T00:14:28Z"},{"alias_kind":"pith_short_8","alias_value":"JWLWEPXH","created_at":"2026-06-24T00:14:28Z"}],"graph_snapshots":[{"event_id":"sha256:2c880f298b6abd2b5c11358400b407de192acdb0fe012fc39421248171680c88","target":"graph","created_at":"2026-06-24T00:14:28Z","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/2606.23845/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate polarized deep-inelastic scattering (DIS) in the context of fully exclusive Monte Carlo simulations for the Electron-Ion Collider (EIC). We present a next-to-leading-order (NLO) treatment of polarized DIS in Herwig 7 using the POWHEG matching scheme, including neutral-current $\\gamma/Z$ exchange and charged-current scattering. We also construct a spin-correlation treatment for NLO-matched events, first by initializing the shower from the spin-density matrix of the polarized DIS Born process and then by propagating the spin-density matrix of the accepted real-emission configurati","authors_text":"A. Papaefstathiou, M.R. Masouminia, P. Richardson","cross_cats":["hep-ex","nucl-ex","nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-06-22T18:28:15Z","title":"Polarized Deep-Inelastic Scattering with Spin Correlations in Herwig 7"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.23845","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:e77213e4e11f015db12a30de775ed7b4a3235bca7dce59ec7f78632ef636a17b","target":"record","created_at":"2026-06-24T00:14:28Z","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":"56061d5573525dea791f2b1bd042cb9dc648ad9e82acbc92df4e8db7d683331d","cross_cats_sorted":["hep-ex","nucl-ex","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-06-22T18:28:15Z","title_canon_sha256":"5f211e30e153da06badf04cb1eccc0f6eaaf6c6827057d5daeb3c10a38ac7350"},"schema_version":"1.0","source":{"id":"2606.23845","kind":"arxiv","version":1}},"canonical_sha256":"4d97623ee7d67df7a21189313e99ebbebfd273d485974592b7b28d3773b512cb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4d97623ee7d67df7a21189313e99ebbebfd273d485974592b7b28d3773b512cb","first_computed_at":"2026-06-24T00:14:28.460018Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-24T00:14:28.460018Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"v+fyR0I2VHRIF/p4nV8roxmhKcWEhwySbSfDrW5jz9QLFkRJovFsUXjZCwDB/SSePfZJCm1++NzKyxuznSabAQ==","signature_status":"signed_v1","signed_at":"2026-06-24T00:14:28.460421Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.23845","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e77213e4e11f015db12a30de775ed7b4a3235bca7dce59ec7f78632ef636a17b","sha256:2c880f298b6abd2b5c11358400b407de192acdb0fe012fc39421248171680c88"],"state_sha256":"60ecaa53ec1a7003b4aa7707e643ddc1153de1912e4ac16b2c887a27359efb64"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GzMsFhzCiNEzOOGkvwGG0tvZSMZMiU3hjx3AuQ50fCjcAZv0vozYKyI+YjzgE49A2Haucog8o02N8DUhh2/LBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T15:26:41.050560Z","bundle_sha256":"a4bc8661350b4449d8abf1ec21286c30d0b8ae952c48d4ccd88eab426a9ed021"}}