{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:UXFJMQHAMGQWRWHGUBF2ZIYFVB","short_pith_number":"pith:UXFJMQHA","schema_version":"1.0","canonical_sha256":"a5ca9640e061a168d8e6a04baca305a8562cb793401c6817114d69819ebf0a84","source":{"kind":"arxiv","id":"1210.4790","version":4},"attestation_state":"computed","paper":{"title":"Beam single spin asymmetry of neutral pion production in semi-inclusive deep inelastic scattering","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Wenjuan Mao, Zhun Lu","submitted_at":"2012-10-17T16:35:34Z","abstract_excerpt":"We study the beam spin asymmetry $A_{LU}^{\\sin\\phi_h}$ in semi-inclusive $\\pi^0$ electroproduction contributed by the T-odd twist-3 distribution function $g^\\perp(x,k_T^2)$. We calculate this transverse momentum dependent distribution function for the $u$ and $d$ quarks inside the proton in a spectator model including the scalar and the axial-vector diquark components. Using the model results, we estimate the asymmetry $A_{LU}^{\\sin\\phi_h}$ in the $e p \\rightarrow e^\\prime \\pi^0 X$ process in which the lepton beam is longitudinally polarized. The model prediction is compared with the data meas"},"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":"1210.4790","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2012-10-17T16:35:34Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"d50be3a0d84e91566d7ad9488e77889ae0e62f2e0a5d7d8c6e0ba9073c8f270f","abstract_canon_sha256":"beb1b1665cbf02673ced431db56636cd1567d541df3eb28f3a369a70f61b713a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:53:47.133990Z","signature_b64":"NRlUfDDOduSM2itkMN2TFRAsqv7BFV999KieRGNvUKL8wSIb5Ol9kdCYpkwoLBTDSweD5DQUrhqVjVRrEz8kBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a5ca9640e061a168d8e6a04baca305a8562cb793401c6817114d69819ebf0a84","last_reissued_at":"2026-05-18T01:53:47.133444Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:53:47.133444Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Beam single spin asymmetry of neutral pion production in semi-inclusive deep inelastic scattering","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Wenjuan Mao, Zhun Lu","submitted_at":"2012-10-17T16:35:34Z","abstract_excerpt":"We study the beam spin asymmetry $A_{LU}^{\\sin\\phi_h}$ in semi-inclusive $\\pi^0$ electroproduction contributed by the T-odd twist-3 distribution function $g^\\perp(x,k_T^2)$. We calculate this transverse momentum dependent distribution function for the $u$ and $d$ quarks inside the proton in a spectator model including the scalar and the axial-vector diquark components. Using the model results, we estimate the asymmetry $A_{LU}^{\\sin\\phi_h}$ in the $e p \\rightarrow e^\\prime \\pi^0 X$ process in which the lepton beam is longitudinally polarized. The model prediction is compared with the data meas"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.4790","kind":"arxiv","version":4},"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":"1210.4790","created_at":"2026-05-18T01:53:47.133530+00:00"},{"alias_kind":"arxiv_version","alias_value":"1210.4790v4","created_at":"2026-05-18T01:53:47.133530+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.4790","created_at":"2026-05-18T01:53:47.133530+00:00"},{"alias_kind":"pith_short_12","alias_value":"UXFJMQHAMGQW","created_at":"2026-05-18T12:27:25.539911+00:00"},{"alias_kind":"pith_short_16","alias_value":"UXFJMQHAMGQWRWHG","created_at":"2026-05-18T12:27:25.539911+00:00"},{"alias_kind":"pith_short_8","alias_value":"UXFJMQHA","created_at":"2026-05-18T12:27:25.539911+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/UXFJMQHAMGQWRWHGUBF2ZIYFVB","json":"https://pith.science/pith/UXFJMQHAMGQWRWHGUBF2ZIYFVB.json","graph_json":"https://pith.science/api/pith-number/UXFJMQHAMGQWRWHGUBF2ZIYFVB/graph.json","events_json":"https://pith.science/api/pith-number/UXFJMQHAMGQWRWHGUBF2ZIYFVB/events.json","paper":"https://pith.science/paper/UXFJMQHA"},"agent_actions":{"view_html":"https://pith.science/pith/UXFJMQHAMGQWRWHGUBF2ZIYFVB","download_json":"https://pith.science/pith/UXFJMQHAMGQWRWHGUBF2ZIYFVB.json","view_paper":"https://pith.science/paper/UXFJMQHA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1210.4790&json=true","fetch_graph":"https://pith.science/api/pith-number/UXFJMQHAMGQWRWHGUBF2ZIYFVB/graph.json","fetch_events":"https://pith.science/api/pith-number/UXFJMQHAMGQWRWHGUBF2ZIYFVB/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/UXFJMQHAMGQWRWHGUBF2ZIYFVB/action/timestamp_anchor","attest_storage":"https://pith.science/pith/UXFJMQHAMGQWRWHGUBF2ZIYFVB/action/storage_attestation","attest_author":"https://pith.science/pith/UXFJMQHAMGQWRWHGUBF2ZIYFVB/action/author_attestation","sign_citation":"https://pith.science/pith/UXFJMQHAMGQWRWHGUBF2ZIYFVB/action/citation_signature","submit_replication":"https://pith.science/pith/UXFJMQHAMGQWRWHGUBF2ZIYFVB/action/replication_record"}},"created_at":"2026-05-18T01:53:47.133530+00:00","updated_at":"2026-05-18T01:53:47.133530+00:00"}