{"paper":{"title":"A Possible Advanced Positron Signal in AMS-02 Measurements","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"A time-symmetric transport hypothesis models positrons as an admixture of retarded and advanced components to explain their distinct spectrum from electrons in AMS-02 data.","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Yi Yang","submitted_at":"2026-04-28T12:08:29Z","abstract_excerpt":"AMS-02 measurements show a striking separation between the characteristic energy scales of cosmic-ray electrons and positrons: the electron spectrum peaks near the ordinary retarded cooling scale, while the positron spectrum exhibits a high-energy structure at hundreds of GeV. I ask whether this hierarchy can be interpreted without introducing a dedicated additional positron source, dark matter component, or fine-tuned source population. Motivated by the Dirac/Feynman-Stueckelberg viewpoint, I formulate an effective transport response in which the positron sector contains a retarded branch and"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We adopt a representative, order-of-magnitude benchmark, in which the advanced-associated component dominates the effective admixture but experiences a ten-fold reduction in effective radiative exposure, to dissect the underlying spectral components and verify the results against AMS-02 data.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The positron sector can be modeled as an effective admixture of retarded and advanced-associated components whose advanced branch experiences a reduced effective radiative exposure; this reduction is introduced as a postulated ingredient requiring deeper theoretical justification, while spatial diffusion and solar modulation are omitted entirely.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"A time-symmetric transport hypothesis models positrons as an admixture of retarded and advanced components with ten-fold reduced radiative exposure to reproduce the separated energy scales in AMS-02 electron and positron spectra.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"A time-symmetric transport hypothesis models positrons as an admixture of retarded and advanced components to explain their distinct spectrum from electrons in AMS-02 data.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"478f8a569c86c19a4ae8fffc770f56ef9b1f11db05af7712161eaaf846c84fd0"},"source":{"id":"2604.25542","kind":"arxiv","version":2},"verdict":{"id":"2dd57c4a-3fc8-4dee-9a43-8249c7b11481","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-07T16:05:02.902468Z","strongest_claim":"We adopt a representative, order-of-magnitude benchmark, in which the advanced-associated component dominates the effective admixture but experiences a ten-fold reduction in effective radiative exposure, to dissect the underlying spectral components and verify the results against AMS-02 data.","one_line_summary":"A time-symmetric transport hypothesis models positrons as an admixture of retarded and advanced components with ten-fold reduced radiative exposure to reproduce the separated energy scales in AMS-02 electron and positron spectra.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The positron sector can be modeled as an effective admixture of retarded and advanced-associated components whose advanced branch experiences a reduced effective radiative exposure; this reduction is introduced as a postulated ingredient requiring deeper theoretical justification, while spatial diffusion and solar modulation are omitted entirely.","pith_extraction_headline":"A time-symmetric transport hypothesis models positrons as an admixture of retarded and advanced components to explain their distinct spectrum from electrons in AMS-02 data."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2604.25542/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"ai_meta_artifact","ran_at":"2026-05-21T04:38:37.323005Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T21:04:50.873388Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"82ff6eeda990a186538ba24876e6956c0de9e45233f4175325ba38e3af23fb5c"},"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"}