{"paper":{"title":"NNLO low-energy constants from flavor-breaking chiral sum rules based on hadronic tau-decay data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","hep-lat"],"primary_cat":"hep-ph","authors_text":"K. Maltman, M. Golterman, S. Peris","submitted_at":"2014-02-05T14:08:21Z","abstract_excerpt":"Using spectral data from non-strange and strange hadronic tau decays, flavor-breaking chiral sum rules involving the flavor ud and us current-current two-point functions are constructed and used to determine the SU(3) NNLO low-energy constant combinations C_{61}^r, C_{12}^r+C_{61}^r+C_{80}^r and C_{12}^r-C_{61}^r+C_{80}^r. The first of these determinations updates the results of an earlier analysis by Durr and Kambor, while the latter two are new. The error on the C_{12}^r+C_{61}^r+C_{80}^r is particularly small. Comparisons are made to model estimates for these quantities. The role of the thi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.1043","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"}