{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:JAHWKS3YIQJQW2VHCYI2AIWJCA","short_pith_number":"pith:JAHWKS3Y","schema_version":"1.0","canonical_sha256":"480f654b7844130b6aa71611a022c91034b1cc80d72903a50de71254e8d4021b","source":{"kind":"arxiv","id":"1701.07839","version":1},"attestation_state":"computed","paper":{"title":"Collinear parton distributions and the structure of the nucleon sea in a light-front meson-cloud model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"B. Pasquini (Pavia U. & INFN, Pavia), S. Kofler (Graz U.)","submitted_at":"2017-01-26T19:03:13Z","abstract_excerpt":"The unpolarized, helicity and transversity parton distribution functions of the nucleon are studied within a convolution model where the bare nucleon is dressed by its virtual meson cloud. Using light-front time-ordered perturbation theory, the Fock states of the physical nucleon are expanded in a series involving a bare nucleon and two-particle, meson-baryon, states. The bare baryons and mesons are described with light-front wave functions (LFWFs) for the corresponding valence-parton components. Using a representation in terms of overlap of LFWFs, the role of the non-perturbative antiquark de"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1701.07839","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2017-01-26T19:03:13Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"3301179774af564387e2b17e8b92385a85408c1ff70920a7f8f9abc9673eba77","abstract_canon_sha256":"4048d999ffc319d6fb1eda077adf8819f2f0f846755c60a46c75b735f223e9ba"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:43:26.974185Z","signature_b64":"VYQKpcG08/6vnYxjzQ2RrAVmCeWobgauTnssL2oXnsxCn97YcViq94+zMCI/4tKQMa1Z/T2MlzFHFw9Ezjr+BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"480f654b7844130b6aa71611a022c91034b1cc80d72903a50de71254e8d4021b","last_reissued_at":"2026-05-18T00:43:26.973432Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:43:26.973432Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Collinear parton distributions and the structure of the nucleon sea in a light-front meson-cloud model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"B. Pasquini (Pavia U. & INFN, Pavia), S. Kofler (Graz U.)","submitted_at":"2017-01-26T19:03:13Z","abstract_excerpt":"The unpolarized, helicity and transversity parton distribution functions of the nucleon are studied within a convolution model where the bare nucleon is dressed by its virtual meson cloud. Using light-front time-ordered perturbation theory, the Fock states of the physical nucleon are expanded in a series involving a bare nucleon and two-particle, meson-baryon, states. The bare baryons and mesons are described with light-front wave functions (LFWFs) for the corresponding valence-parton components. Using a representation in terms of overlap of LFWFs, the role of the non-perturbative antiquark de"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.07839","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1701.07839","created_at":"2026-05-18T00:43:26.973535+00:00"},{"alias_kind":"arxiv_version","alias_value":"1701.07839v1","created_at":"2026-05-18T00:43:26.973535+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.07839","created_at":"2026-05-18T00:43:26.973535+00:00"},{"alias_kind":"pith_short_12","alias_value":"JAHWKS3YIQJQ","created_at":"2026-05-18T12:31:21.493067+00:00"},{"alias_kind":"pith_short_16","alias_value":"JAHWKS3YIQJQW2VH","created_at":"2026-05-18T12:31:21.493067+00:00"},{"alias_kind":"pith_short_8","alias_value":"JAHWKS3Y","created_at":"2026-05-18T12:31:21.493067+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/JAHWKS3YIQJQW2VHCYI2AIWJCA","json":"https://pith.science/pith/JAHWKS3YIQJQW2VHCYI2AIWJCA.json","graph_json":"https://pith.science/api/pith-number/JAHWKS3YIQJQW2VHCYI2AIWJCA/graph.json","events_json":"https://pith.science/api/pith-number/JAHWKS3YIQJQW2VHCYI2AIWJCA/events.json","paper":"https://pith.science/paper/JAHWKS3Y"},"agent_actions":{"view_html":"https://pith.science/pith/JAHWKS3YIQJQW2VHCYI2AIWJCA","download_json":"https://pith.science/pith/JAHWKS3YIQJQW2VHCYI2AIWJCA.json","view_paper":"https://pith.science/paper/JAHWKS3Y","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1701.07839&json=true","fetch_graph":"https://pith.science/api/pith-number/JAHWKS3YIQJQW2VHCYI2AIWJCA/graph.json","fetch_events":"https://pith.science/api/pith-number/JAHWKS3YIQJQW2VHCYI2AIWJCA/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/JAHWKS3YIQJQW2VHCYI2AIWJCA/action/timestamp_anchor","attest_storage":"https://pith.science/pith/JAHWKS3YIQJQW2VHCYI2AIWJCA/action/storage_attestation","attest_author":"https://pith.science/pith/JAHWKS3YIQJQW2VHCYI2AIWJCA/action/author_attestation","sign_citation":"https://pith.science/pith/JAHWKS3YIQJQW2VHCYI2AIWJCA/action/citation_signature","submit_replication":"https://pith.science/pith/JAHWKS3YIQJQW2VHCYI2AIWJCA/action/replication_record"}},"created_at":"2026-05-18T00:43:26.973535+00:00","updated_at":"2026-05-18T00:43:26.973535+00:00"}