{"paper":{"title":"Electro-weak $\\pi\\pi$ form factor and $\\pi\\pi$ scattering: towards a phenomenological tool","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"M. R. Robilotta","submitted_at":"2015-09-29T15:17:27Z","abstract_excerpt":"The weak two-pion form factor $F_V^{\\pi\\pi}$ is described as the product of a weak kernel $\\cal{K}_W$ by a strong function $\\Theta_{\\pi\\pi}^P$, determined directly from $\\pi\\pi$ scattering data. As the latter accounts at once for all effects associated with resonances, intermediate $K\\bar{K}$ loops, and other possible inelasticities present in $\\pi\\pi$ scattering, the need of modeling is restricted to $\\cal{K}_W$ only. The procedure proposed allows one to asses the weak kernel directly, which has a dominant cut beginning at the $K\\bar{K}$ threshold. Even the simplest vector-meson-dominance cho"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.08797","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"}