{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:6AR3ID3UGW67CLRO24IIMZCWXT","short_pith_number":"pith:6AR3ID3U","schema_version":"1.0","canonical_sha256":"f023b40f7435bdf12e2ed710866456bce0cfd1e91b9a5287cfa359d8f197e8e7","source":{"kind":"arxiv","id":"2505.05172","version":2},"attestation_state":"computed","paper":{"title":"Directed flow from parton spin-orbit coupling in $pp$ and $pA$ collisions","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ex","nucl-ex","nucl-th"],"primary_cat":"hep-ph","authors_text":"Sanjin Beni\\'c, Yoshitaka Hatta","submitted_at":"2025-05-08T12:19:30Z","abstract_excerpt":"We point out a novel mechanism to generate $\\cos \\phi$ two-particle azimuthal correlation (`directed flow') in unpolarized proton-proton and proton-nucleus collisions in the forward rapidity region of the projectile proton. This is a direct consequence of the recently discovered strong spin-orbit coupling in gluons at small-$x$. The observable simultaneously serves as a unique probe into the double helicity parton distribution functions of the proton."},"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":"2505.05172","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2025-05-08T12:19:30Z","cross_cats_sorted":["hep-ex","nucl-ex","nucl-th"],"title_canon_sha256":"6527cdff22d5e0276e48c65c74b02029da4d755201d3742fd748c8a5c3a9268f","abstract_canon_sha256":"70415c830ec75f7f84baa753cf2412ad4aa4a27deb2e95b0b67830ff84c7358f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:37:19.709463Z","signature_b64":"tirNpLwoXucaTOdRrLz3IswQfuOtKgouqDx6G+Fb2CIQTRV/4Lxwex5A0DNJPxP3But5nYCAX+EMVvwHaGXTAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f023b40f7435bdf12e2ed710866456bce0cfd1e91b9a5287cfa359d8f197e8e7","last_reissued_at":"2026-07-05T11:37:19.708535Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:37:19.708535Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Directed flow from parton spin-orbit coupling in $pp$ and $pA$ collisions","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ex","nucl-ex","nucl-th"],"primary_cat":"hep-ph","authors_text":"Sanjin Beni\\'c, Yoshitaka Hatta","submitted_at":"2025-05-08T12:19:30Z","abstract_excerpt":"We point out a novel mechanism to generate $\\cos \\phi$ two-particle azimuthal correlation (`directed flow') in unpolarized proton-proton and proton-nucleus collisions in the forward rapidity region of the projectile proton. This is a direct consequence of the recently discovered strong spin-orbit coupling in gluons at small-$x$. The observable simultaneously serves as a unique probe into the double helicity parton distribution functions of the proton."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.05172","kind":"arxiv","version":2},"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/2505.05172/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":"2505.05172","created_at":"2026-07-05T11:37:19.708981+00:00"},{"alias_kind":"arxiv_version","alias_value":"2505.05172v2","created_at":"2026-07-05T11:37:19.708981+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.05172","created_at":"2026-07-05T11:37:19.708981+00:00"},{"alias_kind":"pith_short_12","alias_value":"6AR3ID3UGW67","created_at":"2026-07-05T11:37:19.708981+00:00"},{"alias_kind":"pith_short_16","alias_value":"6AR3ID3UGW67CLRO","created_at":"2026-07-05T11:37:19.708981+00:00"},{"alias_kind":"pith_short_8","alias_value":"6AR3ID3U","created_at":"2026-07-05T11:37:19.708981+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/6AR3ID3UGW67CLRO24IIMZCWXT","json":"https://pith.science/pith/6AR3ID3UGW67CLRO24IIMZCWXT.json","graph_json":"https://pith.science/api/pith-number/6AR3ID3UGW67CLRO24IIMZCWXT/graph.json","events_json":"https://pith.science/api/pith-number/6AR3ID3UGW67CLRO24IIMZCWXT/events.json","paper":"https://pith.science/paper/6AR3ID3U"},"agent_actions":{"view_html":"https://pith.science/pith/6AR3ID3UGW67CLRO24IIMZCWXT","download_json":"https://pith.science/pith/6AR3ID3UGW67CLRO24IIMZCWXT.json","view_paper":"https://pith.science/paper/6AR3ID3U","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2505.05172&json=true","fetch_graph":"https://pith.science/api/pith-number/6AR3ID3UGW67CLRO24IIMZCWXT/graph.json","fetch_events":"https://pith.science/api/pith-number/6AR3ID3UGW67CLRO24IIMZCWXT/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/6AR3ID3UGW67CLRO24IIMZCWXT/action/timestamp_anchor","attest_storage":"https://pith.science/pith/6AR3ID3UGW67CLRO24IIMZCWXT/action/storage_attestation","attest_author":"https://pith.science/pith/6AR3ID3UGW67CLRO24IIMZCWXT/action/author_attestation","sign_citation":"https://pith.science/pith/6AR3ID3UGW67CLRO24IIMZCWXT/action/citation_signature","submit_replication":"https://pith.science/pith/6AR3ID3UGW67CLRO24IIMZCWXT/action/replication_record"}},"created_at":"2026-07-05T11:37:19.708981+00:00","updated_at":"2026-07-05T11:37:19.708981+00:00"}