{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:VG73AIFXSAUOVJ2R6CFPKKGO3X","short_pith_number":"pith:VG73AIFX","schema_version":"1.0","canonical_sha256":"a9bfb020b79028eaa751f08af528ceddf1a6c88d76763c4095a78809fb674f55","source":{"kind":"arxiv","id":"2605.23125","version":1},"attestation_state":"computed","paper":{"title":"Quark orbital angular momentum as a chiral magnetic effect","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Christian Weiss, Ho-Yeon Won, June-Young Kim","submitted_at":"2026-05-22T00:49:16Z","abstract_excerpt":"The flavor-nonsinglet ($u - d$) quark angular momentum (AM) in the proton is computed based on the effective spin-flavor dynamics emerging from chiral symmetry breaking by QCD instantons. The QCD AM operators are converted to effective spin-flavor operators expressing instanton-induced chiral interactions. A large negative orbital AM $L_{u - d}$ arises as a ``chiral magnetic effect'' of the interaction of the quarks with the chiral mean field in the proton in the large-$N_c$ limit. It cancels part of the large positive spin AM $S_{u-d}$ and reduces the total AM $J_{u-d} = L_{u-d} + S_{u-d}$, i"},"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":"2605.23125","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-05-22T00:49:16Z","cross_cats_sorted":[],"title_canon_sha256":"71c322f263ad2a0e68e202848350598e064f388f2bc382ca8d338aed0e1bf3d8","abstract_canon_sha256":"7541bc58851edec522ba33fe2f7d822f7367beb0d805598db7ec2b2134010aa0"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-25T02:01:39.454264Z","signature_b64":"qhGVQ6W7+S0GSOR9Ye7bYQCMnVZickDnPmq5qbqFs9sjdY7tbdWGLQ26UEXAg8dxYhSVHCyiY5wCVnOL7XmZDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a9bfb020b79028eaa751f08af528ceddf1a6c88d76763c4095a78809fb674f55","last_reissued_at":"2026-05-25T02:01:39.453689Z","signature_status":"signed_v1","first_computed_at":"2026-05-25T02:01:39.453689Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Quark orbital angular momentum as a chiral magnetic effect","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Christian Weiss, Ho-Yeon Won, June-Young Kim","submitted_at":"2026-05-22T00:49:16Z","abstract_excerpt":"The flavor-nonsinglet ($u - d$) quark angular momentum (AM) in the proton is computed based on the effective spin-flavor dynamics emerging from chiral symmetry breaking by QCD instantons. The QCD AM operators are converted to effective spin-flavor operators expressing instanton-induced chiral interactions. A large negative orbital AM $L_{u - d}$ arises as a ``chiral magnetic effect'' of the interaction of the quarks with the chiral mean field in the proton in the large-$N_c$ limit. It cancels part of the large positive spin AM $S_{u-d}$ and reduces the total AM $J_{u-d} = L_{u-d} + S_{u-d}$, i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.23125","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/2605.23125/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2605.23125","created_at":"2026-05-25T02:01:39.453759+00:00"},{"alias_kind":"arxiv_version","alias_value":"2605.23125v1","created_at":"2026-05-25T02:01:39.453759+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.23125","created_at":"2026-05-25T02:01:39.453759+00:00"},{"alias_kind":"pith_short_12","alias_value":"VG73AIFXSAUO","created_at":"2026-05-25T02:01:39.453759+00:00"},{"alias_kind":"pith_short_16","alias_value":"VG73AIFXSAUOVJ2R","created_at":"2026-05-25T02:01:39.453759+00:00"},{"alias_kind":"pith_short_8","alias_value":"VG73AIFX","created_at":"2026-05-25T02:01:39.453759+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/VG73AIFXSAUOVJ2R6CFPKKGO3X","json":"https://pith.science/pith/VG73AIFXSAUOVJ2R6CFPKKGO3X.json","graph_json":"https://pith.science/api/pith-number/VG73AIFXSAUOVJ2R6CFPKKGO3X/graph.json","events_json":"https://pith.science/api/pith-number/VG73AIFXSAUOVJ2R6CFPKKGO3X/events.json","paper":"https://pith.science/paper/VG73AIFX"},"agent_actions":{"view_html":"https://pith.science/pith/VG73AIFXSAUOVJ2R6CFPKKGO3X","download_json":"https://pith.science/pith/VG73AIFXSAUOVJ2R6CFPKKGO3X.json","view_paper":"https://pith.science/paper/VG73AIFX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2605.23125&json=true","fetch_graph":"https://pith.science/api/pith-number/VG73AIFXSAUOVJ2R6CFPKKGO3X/graph.json","fetch_events":"https://pith.science/api/pith-number/VG73AIFXSAUOVJ2R6CFPKKGO3X/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/VG73AIFXSAUOVJ2R6CFPKKGO3X/action/timestamp_anchor","attest_storage":"https://pith.science/pith/VG73AIFXSAUOVJ2R6CFPKKGO3X/action/storage_attestation","attest_author":"https://pith.science/pith/VG73AIFXSAUOVJ2R6CFPKKGO3X/action/author_attestation","sign_citation":"https://pith.science/pith/VG73AIFXSAUOVJ2R6CFPKKGO3X/action/citation_signature","submit_replication":"https://pith.science/pith/VG73AIFXSAUOVJ2R6CFPKKGO3X/action/replication_record"}},"created_at":"2026-05-25T02:01:39.453759+00:00","updated_at":"2026-05-25T02:01:39.453759+00:00"}