{"paper":{"title":"Scalar Meson Contributions to a_\\mu from Hadronic Light-by-Light Scattering","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"A. Rabemananjara, D. Rabetiarivony (iHEPMAD-Antananarivo, Fr), MG), M. Knecht (CPT-CNRS - Aix-Marseille - Univ. Toulon, S. Narison (LUPM-CNRS-Univ. Montpellier","submitted_at":"2018-08-11T18:25:53Z","abstract_excerpt":"Using an effective \\sigma/f_0(500) resonance, which describes the \\pi\\pi-->\\pi\\pi and \\gamma\\gamma-->\\pi\\pi scattering data, we evaluate its contribution and the ones of the other scalar mesons to the the hadronic light-by-light (HLbL) scattering component of the anomalous magnetic moment a_\\mu of the muon. We obtain the conservative range of values: \\sum_S~a_\\mu^{lbl}\\vert_S = -(4.51+- 4.12) 10^{-11}, which is dominated by the \\sigma/f_0(500) contribution ( 50%~98%), and where the large error is due to the uncertainties on the parametrisation of the form factors. Considering our new result, w"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.03848","kind":"arxiv","version":3},"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"}