{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1998:KRZQLFBTNFDJFQ4DVL747ZKXFE","short_pith_number":"pith:KRZQLFBT","canonical_record":{"source":{"id":"hep-ex/9807013","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ex","submitted_at":"1998-07-15T17:10:53Z","cross_cats_sorted":[],"title_canon_sha256":"94d8f32ba411bb02dec944ecd7707981ca3f647d5cc056d236fa4c1135e50db4","abstract_canon_sha256":"9b392390bede96a9f17adca2c39363ac7a10602986a2073f1d062bb88a31530d"},"schema_version":"1.0"},"canonical_sha256":"5473059433694692c383aaffcfe557293211b96058ebeaf43d6a696e46ad4810","source":{"kind":"arxiv","id":"hep-ex/9807013","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ex/9807013","created_at":"2026-07-04T15:41:10Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ex/9807013v2","created_at":"2026-07-04T15:41:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ex/9807013","created_at":"2026-07-04T15:41:10Z"},{"alias_kind":"pith_short_12","alias_value":"KRZQLFBTNFDJ","created_at":"2026-07-04T15:41:10Z"},{"alias_kind":"pith_short_16","alias_value":"KRZQLFBTNFDJFQ4D","created_at":"2026-07-04T15:41:10Z"},{"alias_kind":"pith_short_8","alias_value":"KRZQLFBT","created_at":"2026-07-04T15:41:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1998:KRZQLFBTNFDJFQ4DVL747ZKXFE","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ex/9807013","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ex","submitted_at":"1998-07-15T17:10:53Z","cross_cats_sorted":[],"title_canon_sha256":"94d8f32ba411bb02dec944ecd7707981ca3f647d5cc056d236fa4c1135e50db4","abstract_canon_sha256":"9b392390bede96a9f17adca2c39363ac7a10602986a2073f1d062bb88a31530d"},"schema_version":"1.0"},"canonical_sha256":"5473059433694692c383aaffcfe557293211b96058ebeaf43d6a696e46ad4810","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:41:10.558193Z","signature_b64":"v3iQ8pg1j/KwbABbzzfQBlOO7yb52+YhdakiBofbbYqvIMeNPoQPxqzw1sv9JAo9dtY4iXZf0X3QlSwd2W19AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5473059433694692c383aaffcfe557293211b96058ebeaf43d6a696e46ad4810","last_reissued_at":"2026-07-04T15:41:10.557851Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:41:10.557851Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ex/9807013","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:41:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jVziaXVKX0sSfUaofe7FTlcgZf80NOYNXt0Grm2gRMLKR9u/w2MoBj+5tJcz0C/mqQ1tqiObW3xqXHMvVP3sDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T05:53:00.638967Z"},"content_sha256":"d217a9729684579e353c0734fe152ddf86364dcccd532424e1100a587796ef0f","schema_version":"1.0","event_id":"sha256:d217a9729684579e353c0734fe152ddf86364dcccd532424e1100a587796ef0f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1998:KRZQLFBTNFDJFQ4DVL747ZKXFE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Flavor Asymmetry of the Light Quark Sea from Semi-inclusive Deep-inelastic Scattering","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"et al. (The HERMES Collaboration), K. Ackerstaff","submitted_at":"1998-07-15T17:10:53Z","abstract_excerpt":"The flavor asymmetry of the light quark sea of the nucleon is determined in the kinematic range 0.02<x<0.3 and 1 GeV^2<Q^2<10 GeV^2, for the first time from semi-inclusive deep-inelastic scattering. The quantity (dbar(x)-ubar(x))/(u(x)-d(x)) is derived from a relationship between the yields of positive and negative pions from unpolarized hydrogen and deuterium targets. The flavor asymmetry dbar-ubar is found to be non-zero and x dependent, showing an excess of dbar over ubar quarks in the proton."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/9807013","kind":"arxiv","version":2},"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/hep-ex/9807013/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":"2026-07-04T15:41:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AH/bSDj02rhAEnczFFMNUBV1FpWYXDSbfFh76cwlV8FTTu6NekJz6lrDB8F92qQhS7OQT9u0DUvWN/luOXS/Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T05:53:00.639483Z"},"content_sha256":"cc463669e1ca3da96430192e0925c27f842fec08d078782dc9b2e0840d6848c4","schema_version":"1.0","event_id":"sha256:cc463669e1ca3da96430192e0925c27f842fec08d078782dc9b2e0840d6848c4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KRZQLFBTNFDJFQ4DVL747ZKXFE/bundle.json","state_url":"https://pith.science/pith/KRZQLFBTNFDJFQ4DVL747ZKXFE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KRZQLFBTNFDJFQ4DVL747ZKXFE/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":"2026-08-18T05:53:00Z","links":{"resolver":"https://pith.science/pith/KRZQLFBTNFDJFQ4DVL747ZKXFE","bundle":"https://pith.science/pith/KRZQLFBTNFDJFQ4DVL747ZKXFE/bundle.json","state":"https://pith.science/pith/KRZQLFBTNFDJFQ4DVL747ZKXFE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KRZQLFBTNFDJFQ4DVL747ZKXFE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1998:KRZQLFBTNFDJFQ4DVL747ZKXFE","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":"9b392390bede96a9f17adca2c39363ac7a10602986a2073f1d062bb88a31530d","cross_cats_sorted":[],"license":"","primary_cat":"hep-ex","submitted_at":"1998-07-15T17:10:53Z","title_canon_sha256":"94d8f32ba411bb02dec944ecd7707981ca3f647d5cc056d236fa4c1135e50db4"},"schema_version":"1.0","source":{"id":"hep-ex/9807013","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ex/9807013","created_at":"2026-07-04T15:41:10Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ex/9807013v2","created_at":"2026-07-04T15:41:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ex/9807013","created_at":"2026-07-04T15:41:10Z"},{"alias_kind":"pith_short_12","alias_value":"KRZQLFBTNFDJ","created_at":"2026-07-04T15:41:10Z"},{"alias_kind":"pith_short_16","alias_value":"KRZQLFBTNFDJFQ4D","created_at":"2026-07-04T15:41:10Z"},{"alias_kind":"pith_short_8","alias_value":"KRZQLFBT","created_at":"2026-07-04T15:41:10Z"}],"graph_snapshots":[{"event_id":"sha256:cc463669e1ca3da96430192e0925c27f842fec08d078782dc9b2e0840d6848c4","target":"graph","created_at":"2026-07-04T15:41:10Z","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/hep-ex/9807013/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The flavor asymmetry of the light quark sea of the nucleon is determined in the kinematic range 0.02<x<0.3 and 1 GeV^2<Q^2<10 GeV^2, for the first time from semi-inclusive deep-inelastic scattering. The quantity (dbar(x)-ubar(x))/(u(x)-d(x)) is derived from a relationship between the yields of positive and negative pions from unpolarized hydrogen and deuterium targets. The flavor asymmetry dbar-ubar is found to be non-zero and x dependent, showing an excess of dbar over ubar quarks in the proton.","authors_text":"et al. (The HERMES Collaboration), K. Ackerstaff","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ex","submitted_at":"1998-07-15T17:10:53Z","title":"The Flavor Asymmetry of the Light Quark Sea from Semi-inclusive Deep-inelastic Scattering"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/9807013","kind":"arxiv","version":2},"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:d217a9729684579e353c0734fe152ddf86364dcccd532424e1100a587796ef0f","target":"record","created_at":"2026-07-04T15:41:10Z","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":"9b392390bede96a9f17adca2c39363ac7a10602986a2073f1d062bb88a31530d","cross_cats_sorted":[],"license":"","primary_cat":"hep-ex","submitted_at":"1998-07-15T17:10:53Z","title_canon_sha256":"94d8f32ba411bb02dec944ecd7707981ca3f647d5cc056d236fa4c1135e50db4"},"schema_version":"1.0","source":{"id":"hep-ex/9807013","kind":"arxiv","version":2}},"canonical_sha256":"5473059433694692c383aaffcfe557293211b96058ebeaf43d6a696e46ad4810","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5473059433694692c383aaffcfe557293211b96058ebeaf43d6a696e46ad4810","first_computed_at":"2026-07-04T15:41:10.557851Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:41:10.557851Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"v3iQ8pg1j/KwbABbzzfQBlOO7yb52+YhdakiBofbbYqvIMeNPoQPxqzw1sv9JAo9dtY4iXZf0X3QlSwd2W19AA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:41:10.558193Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ex/9807013","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d217a9729684579e353c0734fe152ddf86364dcccd532424e1100a587796ef0f","sha256:cc463669e1ca3da96430192e0925c27f842fec08d078782dc9b2e0840d6848c4"],"state_sha256":"2b67d9936e18ef2c5d508d3f15b4b87680703e6333a1e1f36a50d5da38f4e434"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i9z/QWqbEzEI8mb57fSb5O8x6P8MvBb/eQ3UYK0xy50OcIyy2gbVQWSv+Czp1XWFxzeCqL5jZMd4EGfaSgIeAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T05:53:00.644363Z","bundle_sha256":"9191f6db85c2f44d5d836aadf3668d80987333d0e6350decd8390bcfa336a5d7"}}