{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1998:35VXP4KRLLDJQMAZ6I4763QM64","short_pith_number":"pith:35VXP4KR","canonical_record":{"source":{"id":"hep-ph/9809266","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1998-09-04T12:00:41Z","cross_cats_sorted":[],"title_canon_sha256":"44bc2a02debe43e17f3d6d6a0c6d9c478bf347d24ad685f9db02fa7bc3719c1b","abstract_canon_sha256":"c97acc14ef3743e2cc43e74b4ccd327864801203debd3855f674f9c6da24ce40"},"schema_version":"1.0"},"canonical_sha256":"df6b77f1515ac6983019f239ff6e0cf7218e02b0689626d0ace9c47824f76529","source":{"kind":"arxiv","id":"hep-ph/9809266","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9809266","created_at":"2026-05-18T04:31:42Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9809266v1","created_at":"2026-05-18T04:31:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9809266","created_at":"2026-05-18T04:31:42Z"},{"alias_kind":"pith_short_12","alias_value":"35VXP4KRLLDJ","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"35VXP4KRLLDJQMAZ","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"35VXP4KR","created_at":"2026-05-18T12:25:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1998:35VXP4KRLLDJQMAZ6I4763QM64","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ph/9809266","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1998-09-04T12:00:41Z","cross_cats_sorted":[],"title_canon_sha256":"44bc2a02debe43e17f3d6d6a0c6d9c478bf347d24ad685f9db02fa7bc3719c1b","abstract_canon_sha256":"c97acc14ef3743e2cc43e74b4ccd327864801203debd3855f674f9c6da24ce40"},"schema_version":"1.0"},"canonical_sha256":"df6b77f1515ac6983019f239ff6e0cf7218e02b0689626d0ace9c47824f76529","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:31:42.484870Z","signature_b64":"QImXpY4G8wwlOsX53wASPgDMsWFTyUmLQLNDcBmkQscClnQVgj/3tLavhNiLt0tEqZV2B8eAdM1pDotQ1GJsDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"df6b77f1515ac6983019f239ff6e0cf7218e02b0689626d0ace9c47824f76529","last_reissued_at":"2026-05-18T04:31:42.484467Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:31:42.484467Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ph/9809266","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":"2026-05-18T04:31:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xPe2ST337ApLU+PA/JQ5KNYnnp6SnTjZ0NY4c5JaqNMy81t4DHD0W6mUuwwq0TjwNyZfk64oGe3V9WLHMio1BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T20:30:42.393769Z"},"content_sha256":"ed5c1b831993aede2d7decd26a982c83a19194074f40d7d146c77618056215dd","schema_version":"1.0","event_id":"sha256:ed5c1b831993aede2d7decd26a982c83a19194074f40d7d146c77618056215dd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1998:35VXP4KRLLDJQMAZ6I4763QM64","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Production mechanisms of charm hadrons in the string model","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Emanuel Norrbin, Torbj\\\"orn Sj\\\"ostrand","submitted_at":"1998-09-04T12:00:41Z","abstract_excerpt":"In the hadroproduction of charm in the context of string fragmentation, the pull of a beam remnant at the other end of a string may give a charm hadron more energy than the perturbatively produced charm quark. The collapse of a low-mass string to a single hadron is the extreme case in this direction, and gives rise to asymmetries between charm and anticharm hadron spectra. We study these phenomena, and develop models that describe the characteristics not only of the charm hadrons but also of the associated event."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9809266","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":"2026-05-18T04:31:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"07dOax1IX62BSqQmAKGVawqBVdU5TaeBC/DKmRRUcG2uAA9LL2QFsC6O1XjOc8KlDvfG+Haz96g3gm3DpgHvAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T20:30:42.394461Z"},"content_sha256":"06a12d0e73933db67bf0199086c9fdc9248d0a75dd70019c22249dc94ad03227","schema_version":"1.0","event_id":"sha256:06a12d0e73933db67bf0199086c9fdc9248d0a75dd70019c22249dc94ad03227"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/35VXP4KRLLDJQMAZ6I4763QM64/bundle.json","state_url":"https://pith.science/pith/35VXP4KRLLDJQMAZ6I4763QM64/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/35VXP4KRLLDJQMAZ6I4763QM64/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":"2026-06-06T20:30:42Z","links":{"resolver":"https://pith.science/pith/35VXP4KRLLDJQMAZ6I4763QM64","bundle":"https://pith.science/pith/35VXP4KRLLDJQMAZ6I4763QM64/bundle.json","state":"https://pith.science/pith/35VXP4KRLLDJQMAZ6I4763QM64/state.json","well_known_bundle":"https://pith.science/.well-known/pith/35VXP4KRLLDJQMAZ6I4763QM64/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1998:35VXP4KRLLDJQMAZ6I4763QM64","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":"c97acc14ef3743e2cc43e74b4ccd327864801203debd3855f674f9c6da24ce40","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1998-09-04T12:00:41Z","title_canon_sha256":"44bc2a02debe43e17f3d6d6a0c6d9c478bf347d24ad685f9db02fa7bc3719c1b"},"schema_version":"1.0","source":{"id":"hep-ph/9809266","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9809266","created_at":"2026-05-18T04:31:42Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9809266v1","created_at":"2026-05-18T04:31:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9809266","created_at":"2026-05-18T04:31:42Z"},{"alias_kind":"pith_short_12","alias_value":"35VXP4KRLLDJ","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"35VXP4KRLLDJQMAZ","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"35VXP4KR","created_at":"2026-05-18T12:25:49Z"}],"graph_snapshots":[{"event_id":"sha256:06a12d0e73933db67bf0199086c9fdc9248d0a75dd70019c22249dc94ad03227","target":"graph","created_at":"2026-05-18T04:31:42Z","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":"In the hadroproduction of charm in the context of string fragmentation, the pull of a beam remnant at the other end of a string may give a charm hadron more energy than the perturbatively produced charm quark. The collapse of a low-mass string to a single hadron is the extreme case in this direction, and gives rise to asymmetries between charm and anticharm hadron spectra. We study these phenomena, and develop models that describe the characteristics not only of the charm hadrons but also of the associated event.","authors_text":"Emanuel Norrbin, Torbj\\\"orn Sj\\\"ostrand","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"1998-09-04T12:00:41Z","title":"Production mechanisms of charm hadrons in the string model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9809266","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:ed5c1b831993aede2d7decd26a982c83a19194074f40d7d146c77618056215dd","target":"record","created_at":"2026-05-18T04:31:42Z","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":"c97acc14ef3743e2cc43e74b4ccd327864801203debd3855f674f9c6da24ce40","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1998-09-04T12:00:41Z","title_canon_sha256":"44bc2a02debe43e17f3d6d6a0c6d9c478bf347d24ad685f9db02fa7bc3719c1b"},"schema_version":"1.0","source":{"id":"hep-ph/9809266","kind":"arxiv","version":1}},"canonical_sha256":"df6b77f1515ac6983019f239ff6e0cf7218e02b0689626d0ace9c47824f76529","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"df6b77f1515ac6983019f239ff6e0cf7218e02b0689626d0ace9c47824f76529","first_computed_at":"2026-05-18T04:31:42.484467Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:31:42.484467Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QImXpY4G8wwlOsX53wASPgDMsWFTyUmLQLNDcBmkQscClnQVgj/3tLavhNiLt0tEqZV2B8eAdM1pDotQ1GJsDg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:31:42.484870Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/9809266","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ed5c1b831993aede2d7decd26a982c83a19194074f40d7d146c77618056215dd","sha256:06a12d0e73933db67bf0199086c9fdc9248d0a75dd70019c22249dc94ad03227"],"state_sha256":"8c5ce053b45541fe6e3b7dd9f2860d833e397382b85f48db85e9a26f56e22163"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CkWbeX5OwEk7DYFrfmCG1PLuuE6qvJaPif9DB+33vNJB4XE8CUeNBAqqsgWwV2SAV8qfYPWz1eLrpTtbqoJaBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T20:30:42.397901Z","bundle_sha256":"e8bc2c1ed17b27d3d4585e09fea41e84f2a1cb234648b8431c1d3cff31c00625"}}