{"paper":{"title":"Collins asymmetries for pion-in-jet production in polarized $\\ell p$ collisions at the EIC","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Collins asymmetries for pion-in-jet production offer clearer access to transversity at the EIC","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Carlo Flore, Marco Zaccheddu, Umberto D'Alesio","submitted_at":"2026-05-04T17:57:27Z","abstract_excerpt":"We study Collins azimuthal asymmetries for pion-in-jet production in polarized lepton-proton collisions, extending previous analyses of polarized $pp$ scattering to a complementary and theoretically simpler process. We keep adopting a simplified transverse momentum dependent (TMD) approach, with a collinear configuration for the initial state, and employ the transversity and Collins fragmentation functions as extracted from semi-inclusive deep inelastic scattering and $e^+ e^-$ annihilation processes. We then compute azimuthal asymmetries for the Electron-Ion Collider (EIC) kinematics, both wi"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"Collins asymmetries in lepton-proton processes allow for a much clearer access to the transversity distribution, including its sea-quark component.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"That the transversity and Collins fragmentation functions extracted from SIDIS and e+e- annihilation can be directly applied here under the assumption of TMD factorization and Collins universality, which the paper aims to test but does not independently verify.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Collins asymmetries for pion-in-jet production in polarized lepton-proton collisions provide clearer access to transversity distributions at the EIC and test the universality of the Collins function.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Collins asymmetries for pion-in-jet production offer clearer access to transversity at the EIC","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"c4392f576397353640e796e3e4aa706632828aa3875ec28b5e2f38ae71035ffb"},"source":{"id":"2605.02890","kind":"arxiv","version":3},"verdict":{"id":"cfcf8dc7-e6b9-4793-a157-c6c419a14180","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-08T18:06:47.501891Z","strongest_claim":"Collins asymmetries in lepton-proton processes allow for a much clearer access to the transversity distribution, including its sea-quark component.","one_line_summary":"Collins asymmetries for pion-in-jet production in polarized lepton-proton collisions provide clearer access to transversity distributions at the EIC and test the universality of the Collins function.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"That the transversity and Collins fragmentation functions extracted from SIDIS and e+e- annihilation can be directly applied here under the assumption of TMD factorization and Collins universality, which the paper aims to test but does not independently verify.","pith_extraction_headline":"Collins asymmetries for pion-in-jet production offer clearer access to transversity at the EIC"},"integrity":{"clean":false,"summary":{"advisory":1,"critical":1,"by_detector":{"doi_compliance":{"total":2,"advisory":1,"critical":1,"informational":0}},"informational":0},"endpoint":"/pith/2605.02890/integrity.json","findings":[{"note":"Identifier '10.1016/0550-3213(81' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. 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