{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:ZDG7I22PL6V57GQ634DBKSFYS5","short_pith_number":"pith:ZDG7I22P","schema_version":"1.0","canonical_sha256":"c8cdf46b4f5fabdf9a1edf061548b8975e315a9545094b3a58035844263a491f","source":{"kind":"arxiv","id":"1908.01830","version":1},"attestation_state":"computed","paper":{"title":"Overview of Gluon Helicity Measurements at STAR","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"hep-ex","authors_text":"Christopher Dilks","submitted_at":"2019-08-05T20:06:30Z","abstract_excerpt":"The contribution to the spin of the proton from the gluon helicity is starting to come into focus: for gluons carrying a large fraction $x$ of the proton momentum, evidence of positive gluon polarization has been observed, via measurements of the longitudinal double-spin asymmetry $A_{LL}$ for inclusive jet and dijet production. $A_{LL}$ is sensitive to the polarized gluon distribution function, $\\Delta g(x)$, and while it is positive at high $x$, it is not well constrained for $x<0.05$. Recent measurements at STAR of observables originating dominantly from quark-gluon and gluon-gluon subproce"},"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":"1908.01830","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2019-08-05T20:06:30Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"52eb2e31f1eb7b16fdf3038999f6d1847d9c906ffb16d37a9405c5211ac13d78","abstract_canon_sha256":"c6e837d13c3ddd9d68f7d843a0b0502a1a0649c27c1b4288f012f6265d64c231"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T23:51:48.098228Z","signature_b64":"S31d14eukABZZBAv4UYTZjvTMsOYDDeC4yjmtksUWMpj5r6Ufh1qf4je79PVf3JUzyP3011w7FMqehmWnVyZDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c8cdf46b4f5fabdf9a1edf061548b8975e315a9545094b3a58035844263a491f","last_reissued_at":"2026-07-04T23:51:48.097829Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T23:51:48.097829Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Overview of Gluon Helicity Measurements at STAR","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"hep-ex","authors_text":"Christopher Dilks","submitted_at":"2019-08-05T20:06:30Z","abstract_excerpt":"The contribution to the spin of the proton from the gluon helicity is starting to come into focus: for gluons carrying a large fraction $x$ of the proton momentum, evidence of positive gluon polarization has been observed, via measurements of the longitudinal double-spin asymmetry $A_{LL}$ for inclusive jet and dijet production. $A_{LL}$ is sensitive to the polarized gluon distribution function, $\\Delta g(x)$, and while it is positive at high $x$, it is not well constrained for $x<0.05$. Recent measurements at STAR of observables originating dominantly from quark-gluon and gluon-gluon subproce"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.01830","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/1908.01830/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":"1908.01830","created_at":"2026-07-04T23:51:48.097884+00:00"},{"alias_kind":"arxiv_version","alias_value":"1908.01830v1","created_at":"2026-07-04T23:51:48.097884+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.01830","created_at":"2026-07-04T23:51:48.097884+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZDG7I22PL6V5","created_at":"2026-07-04T23:51:48.097884+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZDG7I22PL6V57GQ6","created_at":"2026-07-04T23:51:48.097884+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZDG7I22P","created_at":"2026-07-04T23:51:48.097884+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/ZDG7I22PL6V57GQ634DBKSFYS5","json":"https://pith.science/pith/ZDG7I22PL6V57GQ634DBKSFYS5.json","graph_json":"https://pith.science/api/pith-number/ZDG7I22PL6V57GQ634DBKSFYS5/graph.json","events_json":"https://pith.science/api/pith-number/ZDG7I22PL6V57GQ634DBKSFYS5/events.json","paper":"https://pith.science/paper/ZDG7I22P"},"agent_actions":{"view_html":"https://pith.science/pith/ZDG7I22PL6V57GQ634DBKSFYS5","download_json":"https://pith.science/pith/ZDG7I22PL6V57GQ634DBKSFYS5.json","view_paper":"https://pith.science/paper/ZDG7I22P","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1908.01830&json=true","fetch_graph":"https://pith.science/api/pith-number/ZDG7I22PL6V57GQ634DBKSFYS5/graph.json","fetch_events":"https://pith.science/api/pith-number/ZDG7I22PL6V57GQ634DBKSFYS5/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZDG7I22PL6V57GQ634DBKSFYS5/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZDG7I22PL6V57GQ634DBKSFYS5/action/storage_attestation","attest_author":"https://pith.science/pith/ZDG7I22PL6V57GQ634DBKSFYS5/action/author_attestation","sign_citation":"https://pith.science/pith/ZDG7I22PL6V57GQ634DBKSFYS5/action/citation_signature","submit_replication":"https://pith.science/pith/ZDG7I22PL6V57GQ634DBKSFYS5/action/replication_record"}},"created_at":"2026-07-04T23:51:48.097884+00:00","updated_at":"2026-07-04T23:51:48.097884+00:00"}