{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:GQ5X4OKU52J2V4BHMVVZV7F7Q2","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":"11943e69b43dc13b16dd96f1f7be8e8266b5243b53fbf39b786eebe6cc5c5984","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2017-11-02T17:47:53Z","title_canon_sha256":"f99f89db0beba851d73358ff305dfcb6d70bc859bd3f1ca87d1a2efeadc7fdf1"},"schema_version":"1.0","source":{"id":"1711.00839","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.00839","created_at":"2026-05-18T00:31:29Z"},{"alias_kind":"arxiv_version","alias_value":"1711.00839v1","created_at":"2026-05-18T00:31:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.00839","created_at":"2026-05-18T00:31:29Z"},{"alias_kind":"pith_short_12","alias_value":"GQ5X4OKU52J2","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_16","alias_value":"GQ5X4OKU52J2V4BH","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_8","alias_value":"GQ5X4OKU","created_at":"2026-05-18T12:31:18Z"}],"graph_snapshots":[{"event_id":"sha256:cb36283a2cb4a6e8e8d6fce80ed00cae96732f75535d4f0459f7396a05258b83","target":"graph","created_at":"2026-05-18T00:31:29Z","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":"The only experimental information on the parton distribution of kaons was obtained from the scarce kaon-induced Drell-Yan cross section data. From these data, evidence for a valence $u$ quark distribution of kaon softer than that of pion was found. We study the feasibility to extract kaon's valence quark distribution via the existing kaon-induced J/psi production data. We compare the NA3 data on the K- / pi- and K+ / pi+ ratios for J/psi production on a platinum target with theoretical calculations based on the color-evaporation model. We show that the NA3 data on J/psi production provide an i","authors_text":"Jen-Chieh Peng, Stephane Platchkov, Takahiro Sawada, Wen-Chen Chang","cross_cats":["nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2017-11-02T17:47:53Z","title":"Valence Quark and Gluon Distributions of Kaon from J/Psi Production"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.00839","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":"sha256:4feb8cab103d3f8240f8407d89a778bcc21b665cbdfdf0a26efb22caff0978f7","target":"record","created_at":"2026-05-18T00:31:29Z","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":"11943e69b43dc13b16dd96f1f7be8e8266b5243b53fbf39b786eebe6cc5c5984","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2017-11-02T17:47:53Z","title_canon_sha256":"f99f89db0beba851d73358ff305dfcb6d70bc859bd3f1ca87d1a2efeadc7fdf1"},"schema_version":"1.0","source":{"id":"1711.00839","kind":"arxiv","version":1}},"canonical_sha256":"343b7e3954ee93aaf027656b9afcbf86ab5447efd4343c2b88b65e7ecb635744","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"343b7e3954ee93aaf027656b9afcbf86ab5447efd4343c2b88b65e7ecb635744","first_computed_at":"2026-05-18T00:31:29.391048Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:31:29.391048Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WRGkHfrEZEzD1Cog4zEbDiN4KVE2eFvG7mKtcETfkssWcUQ3pEffmBRZj+Sxlfg4WfGfqmVGY3Y9+qxZhRJiDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:31:29.392437Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.00839","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4feb8cab103d3f8240f8407d89a778bcc21b665cbdfdf0a26efb22caff0978f7","sha256:cb36283a2cb4a6e8e8d6fce80ed00cae96732f75535d4f0459f7396a05258b83"],"state_sha256":"3e8507aa1b873929418c9a43d97d22b565067cea44633f75357351ed83571f70"}