{"paper":{"title":"Lower Bound on the Pion Polarizability from QCD Sum Rules","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"G. Orlandini, M. Benmerrouche, T.G. Steele","submitted_at":"1995-11-08T21:03:33Z","abstract_excerpt":"Making use of QCD sum rules a lower bound is found which relates the electromagnetic polarizability $\\alpha_{_E}$ and mean-square radius $\\langle r_\\pi^2\\rangle$ of charged pions through the intrinsic polarizability $\\tilde\\alpha_{_E}= \\alpha_{_E}-\\alpha\\langle r_\\pi^2\\rangle/(3M_\\pi)$. We find that if present constraints on the QCD continuum (duality) threshold are accepted, this lower bound on the intrinsic polarizability $\\tilde\\alpha_{_E}$ is incompatible with some previous determinations of $\\alpha_{_E}$ and $\\langle r_\\pi^2\\rangle$."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9511273","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":""},"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"}