{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:A4657F6STWL5CX3JXWZWK6NV4Y","short_pith_number":"pith:A4657F6S","canonical_record":{"source":{"id":"2003.01128","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-03-02T19:00:02Z","cross_cats_sorted":[],"title_canon_sha256":"9b95b3adac7a73d61a03db0a25368a3f4d28c2728e94d309d4d01e297386575a","abstract_canon_sha256":"b6d3ecd05d32ae726fd58e1f633ee4c8fbae25e2a14905f62b0077218357b164"},"schema_version":"1.0"},"canonical_sha256":"073ddf97d29d97d15f69bdb36579b5e61feaaeb0587b93d679b71d4352daf1e4","source":{"kind":"arxiv","id":"2003.01128","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.01128","created_at":"2026-07-05T01:33:59Z"},{"alias_kind":"arxiv_version","alias_value":"2003.01128v1","created_at":"2026-07-05T01:33:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.01128","created_at":"2026-07-05T01:33:59Z"},{"alias_kind":"pith_short_12","alias_value":"A4657F6STWL5","created_at":"2026-07-05T01:33:59Z"},{"alias_kind":"pith_short_16","alias_value":"A4657F6STWL5CX3J","created_at":"2026-07-05T01:33:59Z"},{"alias_kind":"pith_short_8","alias_value":"A4657F6S","created_at":"2026-07-05T01:33:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:A4657F6STWL5CX3JXWZWK6NV4Y","target":"record","payload":{"canonical_record":{"source":{"id":"2003.01128","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-03-02T19:00:02Z","cross_cats_sorted":[],"title_canon_sha256":"9b95b3adac7a73d61a03db0a25368a3f4d28c2728e94d309d4d01e297386575a","abstract_canon_sha256":"b6d3ecd05d32ae726fd58e1f633ee4c8fbae25e2a14905f62b0077218357b164"},"schema_version":"1.0"},"canonical_sha256":"073ddf97d29d97d15f69bdb36579b5e61feaaeb0587b93d679b71d4352daf1e4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:33:59.078005Z","signature_b64":"N/u8wyeFiPHXeuGGZldgRmS9GfET6aFwClj9wZ3+6pRfL5GWik7CtICUqU/Uc+qNWYswV5D5BQ7doBW7UjpsCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"073ddf97d29d97d15f69bdb36579b5e61feaaeb0587b93d679b71d4352daf1e4","last_reissued_at":"2026-07-05T01:33:59.077559Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:33:59.077559Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2003.01128","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":"2026-07-05T01:33:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JzeK84f0MsKARmStEoJBqarWi9R6NxP3KCU/bPysHK3r+QRb4sst/DlPJ8aMCuqejmzhNavZN0AuCHO14nfIDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T08:20:56.490811Z"},"content_sha256":"3dd70b31dddcda51c4b7b23d04ef8c006928ded92410d09e332d903b7a478ead","schema_version":"1.0","event_id":"sha256:3dd70b31dddcda51c4b7b23d04ef8c006928ded92410d09e332d903b7a478ead"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:A4657F6STWL5CX3JXWZWK6NV4Y","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"First extraction of the $\\Lambda$ polarising fragmentation function from Belle $e^+e^-$ data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Francesco Murgia, Marco Zaccheddu, Umberto D'Alesio","submitted_at":"2020-03-02T19:00:02Z","abstract_excerpt":"We present a thorough phenomenological analysis of the experimental data from Belle Collaboration for the transverse $\\Lambda$ and $\\bar\\Lambda$ polarisation, measured in $e^+e^-$ annihilation processes, for the case of inclusive (plus a jet) and associated production with a light charged hadron. This allows for the first ever extraction of the quark polarising fragmentation function for a $\\Lambda$ hyperon, a transverse momentum dependent distribution giving the probability that an unpolarised quark fragments into a transversely polarised spin-1/2 hadron."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.01128","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/2003.01128/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":"2026-07-05T01:33:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/zLGeWsySwrEESQvCqKapbKVW+u5n+ymXoHMdi7FMM3u+Kl2lMLPDY94Z9SEQD+rwOE4P4hCDNpDAnq/iKYPCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T08:20:56.491803Z"},"content_sha256":"d876960f848d57f2b702be79f577db9b39e589fea345e5131edfb3498dce6b00","schema_version":"1.0","event_id":"sha256:d876960f848d57f2b702be79f577db9b39e589fea345e5131edfb3498dce6b00"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/A4657F6STWL5CX3JXWZWK6NV4Y/bundle.json","state_url":"https://pith.science/pith/A4657F6STWL5CX3JXWZWK6NV4Y/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/A4657F6STWL5CX3JXWZWK6NV4Y/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":"2026-08-06T08:20:56Z","links":{"resolver":"https://pith.science/pith/A4657F6STWL5CX3JXWZWK6NV4Y","bundle":"https://pith.science/pith/A4657F6STWL5CX3JXWZWK6NV4Y/bundle.json","state":"https://pith.science/pith/A4657F6STWL5CX3JXWZWK6NV4Y/state.json","well_known_bundle":"https://pith.science/.well-known/pith/A4657F6STWL5CX3JXWZWK6NV4Y/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:A4657F6STWL5CX3JXWZWK6NV4Y","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":"b6d3ecd05d32ae726fd58e1f633ee4c8fbae25e2a14905f62b0077218357b164","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-03-02T19:00:02Z","title_canon_sha256":"9b95b3adac7a73d61a03db0a25368a3f4d28c2728e94d309d4d01e297386575a"},"schema_version":"1.0","source":{"id":"2003.01128","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.01128","created_at":"2026-07-05T01:33:59Z"},{"alias_kind":"arxiv_version","alias_value":"2003.01128v1","created_at":"2026-07-05T01:33:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.01128","created_at":"2026-07-05T01:33:59Z"},{"alias_kind":"pith_short_12","alias_value":"A4657F6STWL5","created_at":"2026-07-05T01:33:59Z"},{"alias_kind":"pith_short_16","alias_value":"A4657F6STWL5CX3J","created_at":"2026-07-05T01:33:59Z"},{"alias_kind":"pith_short_8","alias_value":"A4657F6S","created_at":"2026-07-05T01:33:59Z"}],"graph_snapshots":[{"event_id":"sha256:d876960f848d57f2b702be79f577db9b39e589fea345e5131edfb3498dce6b00","target":"graph","created_at":"2026-07-05T01:33:59Z","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/2003.01128/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a thorough phenomenological analysis of the experimental data from Belle Collaboration for the transverse $\\Lambda$ and $\\bar\\Lambda$ polarisation, measured in $e^+e^-$ annihilation processes, for the case of inclusive (plus a jet) and associated production with a light charged hadron. This allows for the first ever extraction of the quark polarising fragmentation function for a $\\Lambda$ hyperon, a transverse momentum dependent distribution giving the probability that an unpolarised quark fragments into a transversely polarised spin-1/2 hadron.","authors_text":"Francesco Murgia, Marco Zaccheddu, Umberto D'Alesio","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-03-02T19:00:02Z","title":"First extraction of the $\\Lambda$ polarising fragmentation function from Belle $e^+e^-$ data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.01128","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":"sha256:3dd70b31dddcda51c4b7b23d04ef8c006928ded92410d09e332d903b7a478ead","target":"record","created_at":"2026-07-05T01:33:59Z","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":"b6d3ecd05d32ae726fd58e1f633ee4c8fbae25e2a14905f62b0077218357b164","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-03-02T19:00:02Z","title_canon_sha256":"9b95b3adac7a73d61a03db0a25368a3f4d28c2728e94d309d4d01e297386575a"},"schema_version":"1.0","source":{"id":"2003.01128","kind":"arxiv","version":1}},"canonical_sha256":"073ddf97d29d97d15f69bdb36579b5e61feaaeb0587b93d679b71d4352daf1e4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"073ddf97d29d97d15f69bdb36579b5e61feaaeb0587b93d679b71d4352daf1e4","first_computed_at":"2026-07-05T01:33:59.077559Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:33:59.077559Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"N/u8wyeFiPHXeuGGZldgRmS9GfET6aFwClj9wZ3+6pRfL5GWik7CtICUqU/Uc+qNWYswV5D5BQ7doBW7UjpsCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:33:59.078005Z","signed_message":"canonical_sha256_bytes"},"source_id":"2003.01128","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3dd70b31dddcda51c4b7b23d04ef8c006928ded92410d09e332d903b7a478ead","sha256:d876960f848d57f2b702be79f577db9b39e589fea345e5131edfb3498dce6b00"],"state_sha256":"da4fb603af74e6af7c43cb17ba6ed58c5cca9e00db3aca2e982f4e761dcf0b83"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3JS1R6qc+YfS9+2FeNqmmZH1UiJebvT5USr36R1+mbCDjflOjJ01JBo6Cq7adYfQoDVHrWH4M8GjBWzLrp8eBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T08:20:56.502872Z","bundle_sha256":"00660745ed33485ac620a97bb1188ff3260138e2abbaf5be56a40d7f5795d7d7"}}