{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:VKOAPRG54BLHRDXOJKILIREB7O","short_pith_number":"pith:VKOAPRG5","schema_version":"1.0","canonical_sha256":"aa9c07c4dde056788eee4a90b44481fb8a099d73d036718bf5062f82905dad1c","source":{"kind":"arxiv","id":"1505.01176","version":3},"attestation_state":"computed","paper":{"title":"Calculating TMDs of a Large Nucleus: Quasi-Classical Approximation and Quantum Evolution","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"Matthew D. Sievert, Yuri V. Kovchegov","submitted_at":"2015-05-05T20:07:05Z","abstract_excerpt":"We set up a formalism for calculating transverse-momentum-dependent parton distribution functions (TMDs) using the tools of saturation physics. By generalizing the quasi-classical Glauber-Gribov-Mueller/McLerran-Venugopalan approximation to allow for the possibility of spin-orbit coupling, we show how any TMD can be calculated in the saturation framework. This can also be applied to the TMDs of a proton by modeling it as a large \"nucleus.\" To illustrate our technique, we calculate the quark TMDs of an unpolarized nucleus at large-x: the unpolarized quark distribution and the quark Boer-Mulders"},"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":"1505.01176","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-05-05T20:07:05Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"2fb127a9052f8661e29c338d2f5b4a627df61177a825f56ae9453c9430470cc9","abstract_canon_sha256":"f5869308e293bfedc568df83190f007bb206db1b2523b4cde9e17ae1b0e919e1"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:23:38.293007Z","signature_b64":"DhCEit7wtZ4Lxlw0FrLSUVpMgsNmlACAw+KbOgZf40+czdW4rC1KC8Y2PdBntOEYpn/IL4PIQ3IlebIvIb+1AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"aa9c07c4dde056788eee4a90b44481fb8a099d73d036718bf5062f82905dad1c","last_reissued_at":"2026-05-18T01:23:38.292290Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:23:38.292290Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Calculating TMDs of a Large Nucleus: Quasi-Classical Approximation and Quantum Evolution","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"Matthew D. Sievert, Yuri V. Kovchegov","submitted_at":"2015-05-05T20:07:05Z","abstract_excerpt":"We set up a formalism for calculating transverse-momentum-dependent parton distribution functions (TMDs) using the tools of saturation physics. By generalizing the quasi-classical Glauber-Gribov-Mueller/McLerran-Venugopalan approximation to allow for the possibility of spin-orbit coupling, we show how any TMD can be calculated in the saturation framework. This can also be applied to the TMDs of a proton by modeling it as a large \"nucleus.\" To illustrate our technique, we calculate the quark TMDs of an unpolarized nucleus at large-x: the unpolarized quark distribution and the quark Boer-Mulders"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.01176","kind":"arxiv","version":3},"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":"1505.01176","created_at":"2026-05-18T01:23:38.292420+00:00"},{"alias_kind":"arxiv_version","alias_value":"1505.01176v3","created_at":"2026-05-18T01:23:38.292420+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.01176","created_at":"2026-05-18T01:23:38.292420+00:00"},{"alias_kind":"pith_short_12","alias_value":"VKOAPRG54BLH","created_at":"2026-05-18T12:29:44.643036+00:00"},{"alias_kind":"pith_short_16","alias_value":"VKOAPRG54BLHRDXO","created_at":"2026-05-18T12:29:44.643036+00:00"},{"alias_kind":"pith_short_8","alias_value":"VKOAPRG5","created_at":"2026-05-18T12:29:44.643036+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":2,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2508.18438","citing_title":"Evaluating the ratio of the exclusive vector meson photoproduction to inclusive hadron/jet production cross section in ultraperipheral heavy ion collisions","ref_index":60,"is_internal_anchor":true},{"citing_arxiv_id":"2604.24629","citing_title":"On the Two $R$-Factors in the Small-$x$ Shockwave Formalism","ref_index":70,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/VKOAPRG54BLHRDXOJKILIREB7O","json":"https://pith.science/pith/VKOAPRG54BLHRDXOJKILIREB7O.json","graph_json":"https://pith.science/api/pith-number/VKOAPRG54BLHRDXOJKILIREB7O/graph.json","events_json":"https://pith.science/api/pith-number/VKOAPRG54BLHRDXOJKILIREB7O/events.json","paper":"https://pith.science/paper/VKOAPRG5"},"agent_actions":{"view_html":"https://pith.science/pith/VKOAPRG54BLHRDXOJKILIREB7O","download_json":"https://pith.science/pith/VKOAPRG54BLHRDXOJKILIREB7O.json","view_paper":"https://pith.science/paper/VKOAPRG5","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1505.01176&json=true","fetch_graph":"https://pith.science/api/pith-number/VKOAPRG54BLHRDXOJKILIREB7O/graph.json","fetch_events":"https://pith.science/api/pith-number/VKOAPRG54BLHRDXOJKILIREB7O/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/VKOAPRG54BLHRDXOJKILIREB7O/action/timestamp_anchor","attest_storage":"https://pith.science/pith/VKOAPRG54BLHRDXOJKILIREB7O/action/storage_attestation","attest_author":"https://pith.science/pith/VKOAPRG54BLHRDXOJKILIREB7O/action/author_attestation","sign_citation":"https://pith.science/pith/VKOAPRG54BLHRDXOJKILIREB7O/action/citation_signature","submit_replication":"https://pith.science/pith/VKOAPRG54BLHRDXOJKILIREB7O/action/replication_record"}},"created_at":"2026-05-18T01:23:38.292420+00:00","updated_at":"2026-05-18T01:23:38.292420+00:00"}